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* Clock sync problem?
@ 2020-06-07 13:39 Laurence Tratt
  2020-06-08  7:19 ` Takashi Iwai
  0 siblings, 1 reply; 9+ messages in thread
From: Laurence Tratt @ 2020-06-07 13:39 UTC (permalink / raw)
  To: alsa-devel

[-- Attachment #1: Type: text/plain, Size: 1329 bytes --]

Hello,

I've found an interesting issue with an SSL2+ audio interface -- it plays and
records fine (and, for the money, the sound quality is excellent!), but
recording slowly but surely drifts over time. For example, if I record a
click track in Audacity (or Ardour), play it through the interface and record
it, and then line up the start of the recorded click track with the original,
the two tracks will be around 5ms out of alignment after 30s. Interestingly,
this problem does not happen with OpenBSD, where the two tracks line up
precisely.

My guess is that the problem is to do with implicit feedback in endpoints. I
wondered if the problem was the same as with the MOTU M4, but enabling that
quirk for the SSL2+ introduced some crackle, but didn't change the drift.

I'm attaching a) the alsa-info file b) output from OpenBSD's kernel with
debugging in the USB audio driver turned on in case that gives some clues as
to what the two OS's and drivers might be doing differently. If anyone has
any suggestions for how this problem might be addressed, I would be very
grateful!



Laurie
-- 
Personal                                             http://tratt.net/laurie/
Software Development Team                                http://soft-dev.org/
   https://github.com/ltratt              http://twitter.com/laurencetratt

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upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.65
!!################################

!!Script ran on: Sun Jun  7 13:27:41 UTC 2020


!!Linux Distribution
!!------------------

ID_LIKE=arch


!!DMI Information
!!---------------

Manufacturer:      LENOVO
Product Name:      20BTS05Q00
Product Version:   ThinkPad X1 Carbon 3rd
Firmware Version:  N14ET35W (1.13 )
Board Vendor:      LENOVO
Board Name:        20BTS05Q00


!!ACPI Device Status Information
!!---------------

/sys/bus/acpi/devices/ACPI0003:00/status 	 15
/sys/bus/acpi/devices/INT340F:00/status 	 15
/sys/bus/acpi/devices/LEN0068:00/status 	 15
/sys/bus/acpi/devices/LNXPOWER:00/status 	 1
/sys/bus/acpi/devices/LNXPOWER:01/status 	 1
/sys/bus/acpi/devices/LNXPOWER:02/status 	 1
/sys/bus/acpi/devices/LNXVIDEO:01/status 	 15
/sys/bus/acpi/devices/PNP0103:00/status 	 15
/sys/bus/acpi/devices/PNP0C0A:00/status 	 31
/sys/bus/acpi/devices/PNP0C0F:00/status 	 9
/sys/bus/acpi/devices/PNP0C0F:01/status 	 9
/sys/bus/acpi/devices/PNP0C0F:02/status 	 9
/sys/bus/acpi/devices/PNP0C0F:03/status 	 9
/sys/bus/acpi/devices/PNP0C0F:04/status 	 9
/sys/bus/acpi/devices/PNP0C0F:05/status 	 9
/sys/bus/acpi/devices/PNP0C0F:06/status 	 9
/sys/bus/acpi/devices/PNP0C0F:07/status 	 9
/sys/bus/acpi/devices/device:12/status 	 15
/sys/bus/acpi/devices/device:27/status 	 15
/sys/bus/acpi/devices/device:38/status 	 15


!!Kernel Information
!!------------------

Kernel release:    5.7.0-3-MANJARO
Operating System:  GNU/Linux
Architecture:      x86_64
Processor:         unknown
SMP Enabled:       Yes


!!ALSA Version
!!------------

Driver version:     k5.7.0-3-MANJARO
Library version:    1.2.2
Utilities version:  1.2.2


!!Loaded ALSA modules
!!-------------------

snd_hda_intel
snd_hda_intel
snd_usb_audio


!!Sound Servers on this system
!!----------------------------

Jack:
      Installed - Yes (/usr/bin/jackd)
      Running - No


!!Soundcards recognised by ALSA
!!-----------------------------

 0 [HDMI           ]: HDA-Intel - HDA Intel HDMI
                      HDA Intel HDMI at 0xf1230000 irq 52
 1 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xf1234000 irq 49
 2 [S2             ]: USB-Audio - SSL 2+
                      Solid State Logic SSL 2+ at usb-0000:00:14.0-2, high speed


!!PCI Soundcards installed in the system
!!--------------------------------------

00:03.0 Audio device [0403]: Intel Corporation Broadwell-U Audio Controller [8086:160c] (rev 09)
	Subsystem: Lenovo Broadwell-U Audio Controller [17aa:2227]
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)
	Subsystem: Lenovo Wildcat Point-LP High Definition Audio Controller [17aa:2227]


!!Loaded sound module options
!!---------------------------

!!Module: snd_hda_intel
	align_buffer_size : -1
	bdl_pos_adj : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	beep_mode : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
	dmic_detect : Y
	enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
	enable_msi : -1
	id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	jackpoll_ms : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	model : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	patch : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	pm_blacklist : Y
	position_fix : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	power_save : 0
	power_save_controller : N
	probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	probe_only : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	single_cmd : -1
	snoop : -1

!!Module: snd_hda_intel
	align_buffer_size : -1
	bdl_pos_adj : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	beep_mode : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
	dmic_detect : Y
	enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
	enable_msi : -1
	id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	jackpoll_ms : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	model : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	patch : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	pm_blacklist : Y
	position_fix : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	power_save : 0
	power_save_controller : N
	probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	probe_only : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	single_cmd : -1
	snoop : -1

!!Module: snd_usb_audio
	autoclock : Y
	delayed_register : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	device_setup : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
	enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
	id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	ignore_ctl_error : N
	index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	pid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
	quirk_alias : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
	skip_validation : N
	use_vmalloc : Y
	vid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1


!!HDA-Intel Codec information
!!---------------------------
--startcollapse--

Codec: Intel Broadwell HDMI
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x80862808
Subsystem Id: 0x80860101
Revision Id: 0x100000
No Modem Function Group found
Default PCM:
    rates [0x0]:
    bits [0x0]:
    formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D3 CLKSTOP EPSS
  Power: setting=D0, actual=D0, Clock-stop-OK
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x02 [Audio Output] wcaps 0x6611: 8-Channels Digital
  Converter: stream=0, channel=0
  Digital: Enabled KAE
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0x1e]: 16 20 24 32
    formats [0x5]: PCM AC3
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x03 [Audio Output] wcaps 0x6611: 8-Channels Digital
  Converter: stream=0, channel=0
  Digital: Enabled KAE
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0x1e]: 16 20 24 32
    formats [0x5]: PCM AC3
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x04 [Audio Output] wcaps 0x6611: 8-Channels Digital
  Converter: stream=0, channel=0
  Digital: Enabled KAE
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0x1e]: 16 20 24 32
    formats [0x5]: PCM AC3
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x05 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0b000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
  Devices: 0
  Connection: 0
Node 0x06 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0b000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
  Devices: 0
  Connection: 0
Node 0x07 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0b000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
  Devices: 0
  Connection: 0
Node 0x08 [Vendor Defined Widget] wcaps 0xf00000: Mono
Codec: Realtek ALC3232
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0292
Subsystem Id: 0x17aa2227
Revision Id: 0x100001
No Modem Function Group found
Default PCM:
    rates [0x5f0]: 32000 44100 48000 88200 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3 CLKSTOP EPSS
  Power: setting=D0, actual=D0
GPIO: io=5, o=0, i=0, unsolicited=1, wake=0
  IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[4]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x02 [Audio Output] wcaps 0x41d: Stereo Amp-Out
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Device: name="ALC3232 Analog", type="Audio", device=0
  Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
  Amp-Out vals:  [0x3c 0x3c]
  Converter: stream=0, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x03 [Audio Output] wcaps 0x41d: Stereo Amp-Out
  Control: name="Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
  Amp-Out vals:  [0x3c 0x3c]
  Converter: stream=0, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x04 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x05 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x06 [Audio Output] wcaps 0x611: Stereo Digital
  Converter: stream=0, channel=0
  Digital:
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x5f0]: 32000 44100 48000 88200 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x07 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x08 [Audio Input] wcaps 0x10051b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
  Amp-In vals:  [0x97 0x97]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x23
Node 0x09 [Audio Input] wcaps 0x10051b: Stereo Amp-In
  Control: name="Capture Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Capture Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Device: name="ALC3232 Analog", type="Audio", device=0
  Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
  Amp-In vals:  [0x27 0x27]
  Converter: stream=1, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x22
Node 0x0a [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=2, ofs=0
  Control: name="Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=2, ofs=0
  Control: name="Beep Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=4, ofs=0
  Control: name="Beep Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=4, ofs=0
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 5
     0x18 0x19 0x1a 0x1b 0x1d
Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00 0x00] [0x80 0x80]
  Connection: 2
     0x02 0x0b
Node 0x0d [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00 0x00] [0x80 0x80]
  Connection: 2
     0x03 0x0b
Node 0x0e [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0f [Audio Mixer] wcaps 0x20010a: Mono Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x80] [0x00]
  Connection: 2
     0x02 0x03
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x12 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
  Control: name="Internal Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000020: IN
  Pin Default 0x90a60130: [Fixed] Mic at Int N/A
    Conn = Digital, Color = Unknown
    DefAssociation = 0x3, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x13 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000020: IN
  Pin Default 0x40000000: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0x0, Sequence = 0x0
  Pin-ctls: 0x00:
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x14 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x00010010: OUT EAPD
  EAPD 0x2: EAPD
  Pin Default 0x90170110: [Fixed] Speaker at Int N/A
    Conn = Analog, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x0c 0x0d*
Node 0x15 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0001001c: OUT HP EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x03211040: [Jack] HP Out at Ext Left
    Conn = 1/8, Color = Black
    DefAssociation = 0x4, Sequence = 0x0
  Pin-ctls: 0xc0: OUT HP
  Unsolicited: tag=01, enabled=1
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x0c* 0x0d
Node 0x16 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0001001c: OUT HP EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x0c* 0x0d
Node 0x17 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x18 [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00003734: IN OUT Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x0c* 0x0d
Node 0x19 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000024: IN Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x1a [Pin Complex] wcaps 0x40048b: Stereo Amp-In
  Control: name="Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00003724: IN Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x03a11020: [Jack] Mic at Ext Left
    Conn = 1/8, Color = Black
    DefAssociation = 0x2, Sequence = 0x0
  Pin-ctls: 0x24: IN VREF_80
  Unsolicited: tag=02, enabled=1
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x1b [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00003734: IN OUT Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x0c* 0x0d
Node 0x1c [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x1d [Pin Complex] wcaps 0x400400: Mono
  Pincap 0x00000020: IN
  Pin Default 0x40738105: [N/A] Modem Hand at Ext N/A
    Conn = ATAPI, Color = Purple
    DefAssociation = 0x0, Sequence = 0x5
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x1e [Pin Complex] wcaps 0x400781: Stereo Digital
  Pincap 0x00000014: OUT Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x06
Node 0x1f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
  Processing caps: benign=0, ncoeff=124
Node 0x21 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x22 [Audio Selector] wcaps 0x300101: Stereo
  Connection: 8
     0x18 0x19 0x1a 0x1b 0x1d 0x0b 0x12* 0x13
Node 0x23 [Audio Selector] wcaps 0x300101: Stereo
  Connection: 6
     0x18* 0x19 0x1a 0x1b 0x1d 0x0b
Node 0x24 [Vendor Defined Widget] wcaps 0xf00000: Mono
--endcollapse--


!!USB Mixer information
!!---------------------
--startcollapse--

USB Mixer: usb_id=0x31e90002, ctrlif=3, ctlerr=0
Card: Solid State Logic SSL 2+ at usb-0000:00:14.0-2, high speed
USB Mixer: usb_id=0x31e90002, ctrlif=0, ctlerr=0
Card: Solid State Logic SSL 2+ at usb-0000:00:14.0-2, high speed
  Unit: 41
    Control: name="SSL 2+ Internal Clock Validity", index=0
    Info: id=41, control=2, cmask=0x0, channels=1, type="BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 52
    Control: name="Extension Unit Switch", index=0
    Info: id=52, control=1, cmask=0x0, channels=1, type="BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
--endcollapse--


!!ALSA Device nodes
!!-----------------

crw-rw----+ 1 root audio 116, 12 Jun  7 14:26 /dev/snd/controlC0
crw-rw----+ 1 root audio 116,  5 Jun  7 14:26 /dev/snd/controlC1
crw-rw----+ 1 root audio 116, 15 Jun  7 14:26 /dev/snd/controlC2
crw-rw----+ 1 root audio 116, 11 Jun  7 14:26 /dev/snd/hwC0D0
crw-rw----+ 1 root audio 116,  4 Jun  7 14:26 /dev/snd/hwC1D0
crw-rw----+ 1 root audio 116, 16 Jun  7 14:26 /dev/snd/midiC2D0
crw-rw----+ 1 root audio 116, 10 Jun  7 14:26 /dev/snd/pcmC0D10p
crw-rw----+ 1 root audio 116,  6 Jun  7 14:26 /dev/snd/pcmC0D3p
crw-rw----+ 1 root audio 116,  7 Jun  7 14:26 /dev/snd/pcmC0D7p
crw-rw----+ 1 root audio 116,  8 Jun  7 14:26 /dev/snd/pcmC0D8p
crw-rw----+ 1 root audio 116,  9 Jun  7 14:26 /dev/snd/pcmC0D9p
crw-rw----+ 1 root audio 116,  3 Jun  7 14:27 /dev/snd/pcmC1D0c
crw-rw----+ 1 root audio 116,  2 Jun  7 14:26 /dev/snd/pcmC1D0p
crw-rw----+ 1 root audio 116, 14 Jun  7 14:27 /dev/snd/pcmC2D0c
crw-rw----+ 1 root audio 116, 13 Jun  7 14:27 /dev/snd/pcmC2D0p
crw-rw----+ 1 root audio 116,  1 Jun  7 14:26 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Jun  7 14:26 /dev/snd/timer

/dev/snd/by-id:
total 0
drwxr-xr-x 2 root root  60 Jun  7 14:26 .
drwxr-xr-x 4 root root 420 Jun  7 14:26 ..
lrwxrwxrwx 1 root root  12 Jun  7 14:26 usb-Solid_State_Logic_SSL_2+-00 -> ../controlC2

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root 100 Jun  7 14:26 .
drwxr-xr-x 4 root root 420 Jun  7 14:26 ..
lrwxrwxrwx 1 root root  12 Jun  7 14:26 pci-0000:00:03.0 -> ../controlC0
lrwxrwxrwx 1 root root  12 Jun  7 14:26 pci-0000:00:14.0-usb-0:2:1.0 -> ../controlC2
lrwxrwxrwx 1 root root  12 Jun  7 14:26 pci-0000:00:1b.0 -> ../controlC1


!!Aplay/Arecord output
!!--------------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 10: HDMI 4 [HDMI 4]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC3232 Analog [ALC3232 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: S2 [SSL 2+], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 1: PCH [HDA Intel PCH], device 0: ALC3232 Analog [ALC3232 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: S2 [SSL 2+], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

!!Amixer output
!!-------------

!!-------Mixer controls for card HDMI

Card hw:0 'HDMI'/'HDA Intel HDMI at 0xf1230000 irq 52'
  Mixer name	: 'Intel Broadwell HDMI'
  Components	: 'HDA:80862808,80860101,00100000'
  Controls      : 35
  Simple ctrls  : 5
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',3
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',4
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]

!!-------Mixer controls for card PCH

Card hw:1 'PCH'/'HDA Intel PCH at 0xf1234000 irq 49'
  Mixer name	: 'Realtek ALC3232'
  Components	: 'HDA:10ec0292,17aa2227,00100001'
  Controls      : 23
  Simple ctrls  : 11
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 60 [69%] [-20.25dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Mic Mute-LED Mode',0
  Capabilities: enum
  Items: 'On' 'Off' 'Follow Capture' 'Follow Mute'
  Item0: 'Follow Mute'
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 39 [62%] [12.00dB] [on]
  Front Right: Capture 39 [62%] [12.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'

!!-------Mixer controls for card S2

Card hw:2 'S2'/'Solid State Logic SSL 2+ at usb-0000:00:14.0-2, high speed'
  Mixer name	: 'USB Mixer'
  Components	: 'USB31e9:0002'
  Controls      : 5
  Simple ctrls  : 1
Simple mixer control 'Extension Unit',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]


!!Alsactl output
!!--------------

--startcollapse--
state.HDMI {
	control.1 {
		iface CARD
		name 'HDMI/DP,pcm=3 Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.2 {
		iface MIXER
		name 'IEC958 Playback Con Mask'
		value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.3 {
		iface MIXER
		name 'IEC958 Playback Pro Mask'
		value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.4 {
		iface MIXER
		name 'IEC958 Playback Default'
		value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write'
			type IEC958
			count 1
		}
	}
	control.5 {
		iface MIXER
		name 'IEC958 Playback Switch'
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.6 {
		iface PCM
		device 3
		name ELD
		value ''
		comment {
			access 'read volatile'
			type BYTES
			count 0
		}
	}
	control.7 {
		iface CARD
		name 'HDMI/DP,pcm=7 Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.8 {
		iface MIXER
		name 'IEC958 Playback Con Mask'
		index 1
		value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.9 {
		iface MIXER
		name 'IEC958 Playback Pro Mask'
		index 1
		value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.10 {
		iface MIXER
		name 'IEC958 Playback Default'
		index 1
		value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write'
			type IEC958
			count 1
		}
	}
	control.11 {
		iface MIXER
		name 'IEC958 Playback Switch'
		index 1
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.12 {
		iface PCM
		device 7
		name ELD
		value ''
		comment {
			access 'read volatile'
			type BYTES
			count 0
		}
	}
	control.13 {
		iface CARD
		name 'HDMI/DP,pcm=8 Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.14 {
		iface MIXER
		name 'IEC958 Playback Con Mask'
		index 2
		value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.15 {
		iface MIXER
		name 'IEC958 Playback Pro Mask'
		index 2
		value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.16 {
		iface MIXER
		name 'IEC958 Playback Default'
		index 2
		value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write'
			type IEC958
			count 1
		}
	}
	control.17 {
		iface MIXER
		name 'IEC958 Playback Switch'
		index 2
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.18 {
		iface PCM
		device 8
		name ELD
		value ''
		comment {
			access 'read volatile'
			type BYTES
			count 0
		}
	}
	control.19 {
		iface CARD
		name 'HDMI/DP,pcm=9 Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.20 {
		iface MIXER
		name 'IEC958 Playback Con Mask'
		index 3
		value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.21 {
		iface MIXER
		name 'IEC958 Playback Pro Mask'
		index 3
		value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.22 {
		iface MIXER
		name 'IEC958 Playback Default'
		index 3
		value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write'
			type IEC958
			count 1
		}
	}
	control.23 {
		iface MIXER
		name 'IEC958 Playback Switch'
		index 3
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.24 {
		iface PCM
		device 9
		name ELD
		value ''
		comment {
			access 'read volatile'
			type BYTES
			count 0
		}
	}
	control.25 {
		iface CARD
		name 'HDMI/DP,pcm=10 Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.26 {
		iface MIXER
		name 'IEC958 Playback Con Mask'
		index 4
		value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.27 {
		iface MIXER
		name 'IEC958 Playback Pro Mask'
		index 4
		value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.28 {
		iface MIXER
		name 'IEC958 Playback Default'
		index 4
		value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write'
			type IEC958
			count 1
		}
	}
	control.29 {
		iface MIXER
		name 'IEC958 Playback Switch'
		index 4
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.30 {
		iface PCM
		device 10
		name ELD
		value ''
		comment {
			access 'read volatile'
			type BYTES
			count 0
		}
	}
	control.31 {
		iface PCM
		device 3
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		value.2 0
		value.3 0
		value.4 0
		value.5 0
		value.6 0
		value.7 0
		comment {
			access 'read write'
			type INTEGER
			count 8
			range '0 - 36'
		}
	}
	control.32 {
		iface PCM
		device 7
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		value.2 0
		value.3 0
		value.4 0
		value.5 0
		value.6 0
		value.7 0
		comment {
			access 'read write'
			type INTEGER
			count 8
			range '0 - 36'
		}
	}
	control.33 {
		iface PCM
		device 8
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		value.2 0
		value.3 0
		value.4 0
		value.5 0
		value.6 0
		value.7 0
		comment {
			access 'read write'
			type INTEGER
			count 8
			range '0 - 36'
		}
	}
	control.34 {
		iface PCM
		device 9
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		value.2 0
		value.3 0
		value.4 0
		value.5 0
		value.6 0
		value.7 0
		comment {
			access 'read write'
			type INTEGER
			count 8
			range '0 - 36'
		}
	}
	control.35 {
		iface PCM
		device 10
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		value.2 0
		value.3 0
		value.4 0
		value.5 0
		value.6 0
		value.7 0
		comment {
			access 'read write'
			type INTEGER
			count 8
			range '0 - 36'
		}
	}
}
state.PCH {
	control.1 {
		iface MIXER
		name 'Headphone Playback Volume'
		value.0 87
		value.1 87
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 87'
			dbmin -6525
			dbmax 0
			dbvalue.0 0
			dbvalue.1 0
		}
	}
	control.2 {
		iface MIXER
		name 'Headphone Playback Switch'
		value.0 true
		value.1 true
		comment {
			access 'read write'
			type BOOLEAN
			count 2
		}
	}
	control.3 {
		iface MIXER
		name 'Speaker Playback Volume'
		value.0 87
		value.1 87
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 87'
			dbmin -6525
			dbmax 0
			dbvalue.0 0
			dbvalue.1 0
		}
	}
	control.4 {
		iface MIXER
		name 'Speaker Playback Switch'
		value.0 true
		value.1 true
		comment {
			access 'read write'
			type BOOLEAN
			count 2
		}
	}
	control.5 {
		iface MIXER
		name 'Loopback Mixing'
		value Disabled
		comment {
			access 'read write'
			type ENUMERATED
			count 1
			item.0 Disabled
			item.1 Enabled
		}
	}
	control.6 {
		iface MIXER
		name 'Mic Playback Volume'
		value.0 0
		value.1 0
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 31'
			dbmin -3450
			dbmax 1200
			dbvalue.0 -3450
			dbvalue.1 -3450
		}
	}
	control.7 {
		iface MIXER
		name 'Mic Playback Switch'
		value.0 false
		value.1 false
		comment {
			access 'read write'
			type BOOLEAN
			count 2
		}
	}
	control.8 {
		iface MIXER
		name 'Auto-Mute Mode'
		value Enabled
		comment {
			access 'read write'
			type ENUMERATED
			count 1
			item.0 Disabled
			item.1 Enabled
		}
	}
	control.9 {
		iface MIXER
		name 'Capture Volume'
		value.0 39
		value.1 39
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 63'
			dbmin -1725
			dbmax 3000
			dbvalue.0 1200
			dbvalue.1 1200
		}
	}
	control.10 {
		iface MIXER
		name 'Capture Switch'
		value.0 true
		value.1 true
		comment {
			access 'read write'
			type BOOLEAN
			count 2
		}
	}
	control.11 {
		iface MIXER
		name 'Mic Boost Volume'
		value.0 0
		value.1 0
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 3'
			dbmin 0
			dbmax 3000
			dbvalue.0 0
			dbvalue.1 0
		}
	}
	control.12 {
		iface MIXER
		name 'Internal Mic Boost Volume'
		value.0 0
		value.1 0
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 3'
			dbmin 0
			dbmax 3600
			dbvalue.0 0
			dbvalue.1 0
		}
	}
	control.13 {
		iface MIXER
		name 'Beep Playback Volume'
		value.0 0
		value.1 0
		comment {
			access 'read write'
			type INTEGER
			count 2
			range '0 - 31'
			dbmin -3450
			dbmax 1200
			dbvalue.0 -3450
			dbvalue.1 -3450
		}
	}
	control.14 {
		iface MIXER
		name 'Beep Playback Switch'
		value.0 false
		value.1 false
		comment {
			access 'read write'
			type BOOLEAN
			count 2
		}
	}
	control.15 {
		iface MIXER
		name 'Mic Mute-LED Mode'
		value 'Follow Mute'
		comment {
			access 'read write'
			type ENUMERATED
			count 1
			item.0 On
			item.1 Off
			item.2 'Follow Capture'
			item.3 'Follow Mute'
		}
	}
	control.16 {
		iface MIXER
		name 'Master Playback Volume'
		value 60
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '0 - 87'
			dbmin -6525
			dbmax 0
			dbvalue.0 -2025
		}
	}
	control.17 {
		iface MIXER
		name 'Master Playback Switch'
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.18 {
		iface CARD
		name 'Mic Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.19 {
		iface CARD
		name 'Internal Mic Phantom Jack'
		value true
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.20 {
		iface CARD
		name 'Headphone Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.21 {
		iface CARD
		name 'Speaker Phantom Jack'
		value true
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.22 {
		iface PCM
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		comment {
			access read
			type INTEGER
			count 2
			range '0 - 36'
		}
	}
	control.23 {
		iface PCM
		name 'Capture Channel Map'
		value.0 0
		value.1 0
		comment {
			access read
			type INTEGER
			count 2
			range '0 - 36'
		}
	}
}
state.S2 {
	control.1 {
		iface PCM
		name 'Playback Channel Map'
		value.0 0
		value.1 0
		value.2 0
		value.3 0
		comment {
			access read
			type INTEGER
			count 4
			range '0 - 36'
		}
	}
	control.2 {
		iface PCM
		name 'Capture Channel Map'
		value.0 0
		value.1 0
		comment {
			access read
			type INTEGER
			count 2
			range '0 - 36'
		}
	}
	control.3 {
		iface CARD
		name 'SSL 2+ Internal Clock Validity'
		value true
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.4 {
		iface MIXER
		name 'Extension Unit Switch'
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.5 {
		iface CARD
		name 'Keep Interface'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
}
--endcollapse--


!!All Loaded Modules
!!------------------

ac
aesni_intel
agpgart
atkbd
battery
bluetooth
bnep
btbcm
btintel
btrtl
btusb
ccm
cec
cfg80211
cmdlinepart
coretemp
crc16
crc32_pclmul
crc32c_generic
crc32c_intel
crct10dif_pclmul
cryptd
crypto_simd
crypto_user
drm
drm_kms_helper
e1000e
ecc
ecdh_generic
ehci_hcd
ehci_pci
evdev
ext4
fb_sys_fops
fuse
ghash_clmulni_intel
glue_helper
i2c_algo_bit
i2c_i801
i8042
i915
iTCO_vendor_support
iTCO_wdt
input_leds
intel_cstate
intel_gtt
intel_pch_thermal
intel_powerclamp
intel_rapl_common
intel_rapl_msr
intel_rapl_perf
intel_spi
intel_spi_platform
intel_uncore
ip_tables
irqbypass
iwlmvm
iwlwifi
jbd2
joydev
kvm
kvm_intel
ledtrig_audio
libarc4
libps2
lpc_ich
mac80211
mac_hid
mbcache
mc
mei
mei_hdcp
mei_me
mei_wdt
mousedev
mtd
nvram
ofpart
pcspkr
psmouse
rc_core
rfkill
rmi_core
rmi_smbus
serio
serio_raw
snd
snd_hda_codec
snd_hda_codec_generic
snd_hda_codec_hdmi
snd_hda_codec_realtek
snd_hda_core
snd_hda_intel
snd_hwdep
snd_intel_dspcfg
snd_pcm
snd_rawmidi
snd_seq
snd_seq_device
snd_seq_dummy
snd_seq_midi
snd_seq_midi_event
snd_timer
snd_usb_audio
snd_usbmidi_lib
soundcore
spi_nor
syscopyarea
sysfillrect
sysimgblt
thinkpad_acpi
uvcvideo
videobuf2_common
videobuf2_memops
videobuf2_v4l2
videobuf2_vmalloc
videodev
wmi
wmi_bmof
x86_pkg_temp_thermal
x_tables
xhci_hcd
xhci_pci


!!Sysfs Files
!!-----------

/sys/class/sound/hwC0D0/init_pin_configs:
0x05 0x18560010
0x06 0x18560010
0x07 0x18560010

/sys/class/sound/hwC0D0/driver_pin_configs:

/sys/class/sound/hwC0D0/user_pin_configs:

/sys/class/sound/hwC0D0/init_verbs:

/sys/class/sound/hwC0D0/hints:

/sys/class/sound/hwC1D0/init_pin_configs:
0x12 0x90a60130
0x13 0x40000000
0x14 0x90170110
0x15 0x03211040
0x16 0x411111f0
0x18 0x411111f0
0x19 0x411111f0
0x1a 0x03a11020
0x1b 0x411111f0
0x1d 0x40738105
0x1e 0x411111f0

/sys/class/sound/hwC1D0/driver_pin_configs:

/sys/class/sound/hwC1D0/user_pin_configs:

/sys/class/sound/hwC1D0/init_verbs:

/sys/class/sound/hwC1D0/hints:


!!ALSA/HDA dmesg
!!--------------

[    0.104730] ACPI: Added _OSI(Linux-Dell-Video)
[    0.104730] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.104730] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
--
[    1.874765] cryptd: max_cpu_qlen set to 1000
[    1.877778] snd_hda_codec_realtek hdaudioC1D0: autoconfig for ALC3232: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[    1.877780] snd_hda_codec_realtek hdaudioC1D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[    1.877782] snd_hda_codec_realtek hdaudioC1D0:    hp_outs=1 (0x15/0x0/0x0/0x0/0x0)
[    1.877783] snd_hda_codec_realtek hdaudioC1D0:    mono: mono_out=0x0
[    1.877784] snd_hda_codec_realtek hdaudioC1D0:    inputs:
[    1.877785] snd_hda_codec_realtek hdaudioC1D0:      Mic=0x1a
[    1.877787] snd_hda_codec_realtek hdaudioC1D0:      Internal Mic=0x12
[    1.888490] audit: type=1130 audit(1591536375.042:8): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-journal-catalog-update comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
--
[    1.987808] usb 2-8: new high-speed USB device number 5 using xhci_hcd
[    2.102968] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/sound/card1/input8
[    2.103029] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card1/input9
[    2.103084] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card1/input10
[    2.122103] Intel(R) Wireless WiFi driver for Linux
--
[    2.305410] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input11
[    2.305595] snd_hda_intel 0000:00:03.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[    2.310468] fbcon: i915drmfb (fb0) is primary device
--
[    2.351454] 0x000000000000-0x000001000000 : "BIOS"
[    2.357189] input: HDA Intel HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/sound/card0/input12
[    2.357248] input: HDA Intel HDMI HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.0/sound/card0/input13
[    2.357301] input: HDA Intel HDMI HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.0/sound/card0/input14
[    2.357355] input: HDA Intel HDMI HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:03.0/sound/card0/input15
[    2.357408] input: HDA Intel HDMI HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:03.0/sound/card0/input16
[    2.404899] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
--
[    4.257373] fuse: init (API version 7.31)
[    5.051361] usbcore: registered new interface driver snd-usb-audio
[    7.413939] kauditd_printk_skb: 35 callbacks suppressed



[-- Attachment #3: openbsd_uaudio_output.txt --]
[-- Type: text/plain, Size: 3910 bytes --]

uaudio1 at uhub0 port 13 configuration 1 interface 1 "Solid State Logic SSL 2+" rev 2.00/0.61 addr 5
uaudio_process_ac: ifnum = 0, 387 bytes to processs
uaudio_process_header: version 0x200
40: clock sel
41: clock source, attr = 0x3, ctl = 0x7
02: in, nch = 4, term = 0x101, assoc = 0
20: out, id = 2, nch = 4, term = 0x301, assoc = 0
01: in, nch = 2, term = 0x201, assoc = 0
52: proc/ext, type = 0x0, nch = 2
52:	pin 1:
11: feature id = 52, nch = 2, size = 4
22: out, id = 11, nch = 2, term = 0x101, assoc = 0
uaudio1: units list:
01: input <input>, dest = 52 <ext>
52: proc/ext <ext>:
52:	source 1 <input>:
11: feature <record>, src = 52 <ext>, dst = 22 <record>, cls = 1
22: output <record>, source = 11 <record>
41: clock source <prog>
40: clock sel <clksel>
02: input <dac>, dest = 20 <output>
20: output <output>, source = 02 <dac>
uaudio1: mixer controls:
uaudio_req: type = 0xa1, req = 0x2, val = 0x100, index = 0x2900, size = 2
uaudio_req: type = 0xa1, req = 0x2, val = 0x100, index = 0x2900, size = 74
41: clock rates: 44100, 48000, 88200, 96000, 176400, 192000 (6 vals)
uaudio_req: type = 0xa1, req = 0x1, val = 0x100, index = 0x2800, size = 1
uaudio_process_conf: stop altnum 0
uaudio_process_as_ep: addr = 0x1, async/data, maxpktsz = 400, ival = 1
uaudio_process_conf: stop altnum 0
uaudio_process_as_ep: addr = 0x81, async/impl, maxpktsz = 200, ival = 1
uaudio_process_conf: >1 AC ifaces
00: <outputs>, next = -1, prev = -1, class = -1
01: <inputs>, next = -1, prev = -1, class = -1
2 controls
alts:
mode = play, ifnum = 1, altnum = 1, addr = 0x1, maxpkt = 400, sync = 0x0, nch = 4, fmt = s24le4, rates: 44100 48000 88200 96000 176400 192000
mode = rec, ifnum = 2, altnum = 1, addr = 0x81, maxpkt = 200, sync = 0x0, nch = 2, fmt = s24le4, rates: 44100 48000 88200 96000 176400 192000
parameters:
pchan = 4, s24le4, rchan = 2, s24le4, rates: 44100 48000 88200 96000 176400 192000
uaudio1: class v2, high-speed, sync, channels: 4 play, 2 rec, 0 ctls
audio2 at uaudio1
umidi0 at uhub0 port 13 configuration 1 interface 4 "Solid State Logic SSL 2+" rev 2.00/0.61 addr 5
umidi0: (genuine USB-MIDI)
umidi0: out=1, in=1
midi0 at umidi0: <USB MIDI I/F>
ugen0 at uhub0 port 13 configuration 1 "Solid State Logic SSL 2+" rev 2.00/0.61 addr 5
uaudio_set_params: rate 48000 -> 48000 (index 8)
uaudio_set_params: rate = 48000
uaudio_set_params: rate 48000 -> 48000 (index 8)
uaudio_set_params: rate = 48000
uaudio_stream_open: play: blksz = 7680, rate = 48000, fps = 8000
uaudio_stream_open: spf = 0x1e0000 in [0x1de200:0x1e1e00]
uaudio_stream_open: nframes_max = 88, nframes_mask = 7, maxpkt = 112
uaudio_stream_open: safe_blksz = 8192, nxfers = 2
uaudio_req: type = 0x21, req = 0x1, val = 0x100, index = 0x2900, size = 4
uaudio_stream_open: rec: blksz = 3840, rate = 48000, fps = 8000
uaudio_stream_open: spf = 0x1e0000 in [0x1de200:0x1e1e00]
uaudio_stream_open: nframes_max = 88, nframes_mask = 7, maxpkt = 56
uaudio_stream_open: safe_blksz = 4096, nxfers = 2
uaudio_req: type = 0x21, req = 0x1, val = 0x100, index = 0x2900, size = 4
uaudio_trigger: preparing
uaudio_trigger: starting
uaudio_pdata_intr: xfer status = 6
uaudio_pdata_intr: xfer status = 6
uaudio_rdata_intr: xfer status = 6
uaudio_rdata_intr: xfer status = 6
uaudio_stream_open: play: blksz = 7680, rate = 48000, fps = 8000
uaudio_stream_open: spf = 0x1e0000 in [0x1de200:0x1e1e00]
uaudio_stream_open: nframes_max = 88, nframes_mask = 7, maxpkt = 112
uaudio_stream_open: safe_blksz = 8192, nxfers = 2
uaudio_req: type = 0x21, req = 0x1, val = 0x100, index = 0x2900, size = 4
uaudio_stream_open: rec: blksz = 3840, rate = 48000, fps = 8000
uaudio_stream_open: spf = 0x1e0000 in [0x1de200:0x1e1e00]
uaudio_stream_open: nframes_max = 88, nframes_mask = 7, maxpkt = 56
uaudio_stream_open: safe_blksz = 4096, nxfers = 2
uaudio_req: type = 0x21, req = 0x1, val = 0x100, index = 0x2900, size = 4
uaudio_trigger: preparing
uaudio_trigger: starting

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-07 13:39 Clock sync problem? Laurence Tratt
@ 2020-06-08  7:19 ` Takashi Iwai
  2020-06-08  8:32   ` Thomas Ebeling
  0 siblings, 1 reply; 9+ messages in thread
From: Takashi Iwai @ 2020-06-08  7:19 UTC (permalink / raw)
  To: Laurence Tratt; +Cc: alsa-devel

On Sun, 07 Jun 2020 15:39:59 +0200,
Laurence Tratt wrote:
> 
> Hello,
> 
> I've found an interesting issue with an SSL2+ audio interface -- it plays and
> records fine (and, for the money, the sound quality is excellent!), but
> recording slowly but surely drifts over time. For example, if I record a
> click track in Audacity (or Ardour), play it through the interface and record
> it, and then line up the start of the recorded click track with the original,
> the two tracks will be around 5ms out of alignment after 30s. Interestingly,
> this problem does not happen with OpenBSD, where the two tracks line up
> precisely.
> 
> My guess is that the problem is to do with implicit feedback in endpoints. I
> wondered if the problem was the same as with the MOTU M4, but enabling that
> quirk for the SSL2+ introduced some crackle, but didn't change the drift.
> 
> I'm attaching a) the alsa-info file b) output from OpenBSD's kernel with
> debugging in the USB audio driver turned on in case that gives some clues as
> to what the two OS's and drivers might be doing differently. If anyone has
> any suggestions for how this problem might be addressed, I would be very
> grateful!

The recent change in USB-audio might help for a case like yours. 
Try my sound git tree (for-linus branch) or Linus' tree.  The former
should be pullable onto 5.7 kernel cleanly.


thanks,

Takashi

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-08  7:19 ` Takashi Iwai
@ 2020-06-08  8:32   ` Thomas Ebeling
  2020-06-08 13:35     ` Takashi Iwai
  0 siblings, 1 reply; 9+ messages in thread
From: Thomas Ebeling @ 2020-06-08  8:32 UTC (permalink / raw)
  To: alsa-devel


On 08.06.20 09:19, Takashi Iwai wrote:
> On Sun, 07 Jun 2020 15:39:59 +0200,
> Laurence Tratt wrote:
>> Hello,
>>
>> I've found an interesting issue with an SSL2+ audio interface -- it plays and
>> records fine (and, for the money, the sound quality is excellent!), but
>> recording slowly but surely drifts over time. For example, if I record a
>> click track in Audacity (or Ardour), play it through the interface and record
>> it, and then line up the start of the recorded click track with the original,
>> the two tracks will be around 5ms out of alignment after 30s. Interestingly,
>> this problem does not happen with OpenBSD, where the two tracks line up
>> precisely.
>>
> The recent change in USB-audio might help for a case like yours.
> Try my sound git tree (for-linus branch) or Linus' tree.  The former
> should be pullable onto 5.7 kernel cleanly.

Since I recently had clock drift issues with Audient devices, I'm 
intrigued by this. @Takashi Can you quickly elaborate, what you think, 
Laurance's issue might be and what has changed in that tree that might 
help him fix it? Is there some general issue with the current (stable) 
sound/usb implementation?

Thanks!

Thomas

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-08  8:32   ` Thomas Ebeling
@ 2020-06-08 13:35     ` Takashi Iwai
  2020-06-08 14:43       ` Alexander Tsoy
  0 siblings, 1 reply; 9+ messages in thread
From: Takashi Iwai @ 2020-06-08 13:35 UTC (permalink / raw)
  To: Thomas Ebeling; +Cc: alsa-devel

On Mon, 08 Jun 2020 10:32:24 +0200,
Thomas Ebeling wrote:
> 
> 
> On 08.06.20 09:19, Takashi Iwai wrote:
> > On Sun, 07 Jun 2020 15:39:59 +0200,
> > Laurence Tratt wrote:
> >> Hello,
> >>
> >> I've found an interesting issue with an SSL2+ audio interface -- it plays and
> >> records fine (and, for the money, the sound quality is excellent!), but
> >> recording slowly but surely drifts over time. For example, if I record a
> >> click track in Audacity (or Ardour), play it through the interface and record
> >> it, and then line up the start of the recorded click track with the original,
> >> the two tracks will be around 5ms out of alignment after 30s. Interestingly,
> >> this problem does not happen with OpenBSD, where the two tracks line up
> >> precisely.
> >>
> > The recent change in USB-audio might help for a case like yours.
> > Try my sound git tree (for-linus branch) or Linus' tree.  The former
> > should be pullable onto 5.7 kernel cleanly.
> 
> Since I recently had clock drift issues with Audient devices, I'm
> intrigued by this. @Takashi Can you quickly elaborate, what you think,
> Laurance's issue might be and what has changed in that tree that might
> help him fix it? Is there some general issue with the current (stable)
> sound/usb implementation?

The frame size calculation in USB-audio driver wasn't accurate enough
because of the computation in Q16.16 format.  It works OK for async
mode, but for others, it can accumulate rounding errors.  The recent
change corrected it for a more precise way.


Takashi

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-08 13:35     ` Takashi Iwai
@ 2020-06-08 14:43       ` Alexander Tsoy
  2020-06-10  7:44         ` Laurence Tratt
  0 siblings, 1 reply; 9+ messages in thread
From: Alexander Tsoy @ 2020-06-08 14:43 UTC (permalink / raw)
  To: Takashi Iwai, Thomas Ebeling, Laurence Tratt; +Cc: alsa-devel

В Пн, 08/06/2020 в 15:35 +0200, Takashi Iwai пишет:
> On Mon, 08 Jun 2020 10:32:24 +0200,
> Thomas Ebeling wrote:
> > 
> > On 08.06.20 09:19, Takashi Iwai wrote:
> > > On Sun, 07 Jun 2020 15:39:59 +0200,
> > > Laurence Tratt wrote:
> > > > Hello,
> > > > 
> > > > I've found an interesting issue with an SSL2+ audio interface
> > > > -- it plays and
> > > > records fine (and, for the money, the sound quality is
> > > > excellent!), but
> > > > recording slowly but surely drifts over time. For example, if I
> > > > record a
> > > > click track in Audacity (or Ardour), play it through the
> > > > interface and record
> > > > it, and then line up the start of the recorded click track with
> > > > the original,
> > > > the two tracks will be around 5ms out of alignment after 30s.
> > > > Interestingly,
> > > > this problem does not happen with OpenBSD, where the two tracks
> > > > line up
> > > > precisely.
> > > > 
> > > The recent change in USB-audio might help for a case like yours.
> > > Try my sound git tree (for-linus branch) or Linus' tree.  The
> > > former
> > > should be pullable onto 5.7 kernel cleanly.
> > 
> > Since I recently had clock drift issues with Audient devices, I'm
> > intrigued by this. @Takashi Can you quickly elaborate, what you
> > think,
> > Laurance's issue might be and what has changed in that tree that
> > might
> > help him fix it? Is there some general issue with the current
> > (stable)
> > sound/usb implementation?
> 
> The frame size calculation in USB-audio driver wasn't accurate enough
> because of the computation in Q16.16 format.  It works OK for async
> mode, but for others, it can accumulate rounding errors.  The recent
> change corrected it for a more precise way.

I believe that SSL and Audient devices operates in async mode. Would be
nice to see "lsusb -v" output for them.


^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-08 14:43       ` Alexander Tsoy
@ 2020-06-10  7:44         ` Laurence Tratt
  2020-06-10 13:49           ` Alexander Tsoy
  0 siblings, 1 reply; 9+ messages in thread
From: Laurence Tratt @ 2020-06-10  7:44 UTC (permalink / raw)
  To: Alexander Tsoy; +Cc: Takashi Iwai, alsa-devel, Thomas Ebeling

[-- Attachment #1: Type: text/plain, Size: 516 bytes --]

On Mon, Jun 08, 2020 at 05:43:05PM +0300, Alexander Tsoy wrote:

Hello Alexander,

>> The frame size calculation in USB-audio driver wasn't accurate enough
>> because of the computation in Q16.16 format.  It works OK for async mode,
>> but for others, it can accumulate rounding errors.  The recent change
>> corrected it for a more precise way.
> I believe that SSL and Audient devices operates in async mode. Would be
> nice to see "lsusb -v" output for them.

Please find attached the "lsusb -v" output.


Laurie

[-- Attachment #2: lsusb.txt --]
[-- Type: text/plain, Size: 72443 bytes --]


Bus 002 Device 002: ID 8087:8001 Intel Corp. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x8087 Intel Corp.
  idProduct          0x8001 
  bcdDevice            0.03
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0019
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval              12
Hub Descriptor:
  bLength              11
  bDescriptorType      41
  nNbrPorts             8
  wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
  bPwrOn2PwrGood        0 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00 0x00
  PortPwrCtrlMask    0xff 0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0100 power
   Port 7: 0000.0100 power
   Port 8: 0000.0100 power
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0001
  Self Powered

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            5.07
  iManufacturer           3 Linux 5.7.0-3-MANJARO ehci_hcd
  iProduct                2 EHCI Host Controller
  iSerial                 1 0000:00:1d.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0019
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0507 highspeed power suspend enable connect
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
Device Status:     0x0001
  Self Powered

Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               3.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 
  bDeviceProtocol         3 
  bMaxPacketSize0         9
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0003 3.0 root hub
  bcdDevice            5.07
  iManufacturer           3 Linux 5.7.0-3-MANJARO xhci-hcd
  iProduct                2 xHCI Host Controller
  iSerial                 1 0000:00:14.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x001f
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
        bMaxBurst               0
Hub Descriptor:
  bLength              12
  bDescriptorType      42
  nNbrPorts             4
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  bHubDecLat          0.0 micro seconds
  wHubDelay             0 nano seconds
  DeviceRemovable    0x08
 Hub Port Status:
   Port 1: 0000.02a0 5Gbps power Rx.Detect
   Port 2: 0000.02a0 5Gbps power Rx.Detect
   Port 3: 0000.02a0 5Gbps power Rx.Detect
   Port 4: 0000.02a0 5Gbps power Rx.Detect
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength       0x000f
  bNumDeviceCaps          1
  SuperSpeed USB Device Capability:
    bLength                10
    bDescriptorType        16
    bDevCapabilityType      3
    bmAttributes         0x02
      Latency Tolerance Messages (LTM) Supported
    wSpeedsSupported   0x0008
      Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport   3
      Lowest fully-functional device speed is SuperSpeed (5Gbps)
    bU1DevExitLat          10 micro seconds
    bU2DevExitLat         512 micro seconds
Device Status:     0x0001
  Self Powered

Bus 001 Device 005: ID 04f2:b45d Chicony Electronics Co., Ltd Integrated Camera
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x04f2 Chicony Electronics Co., Ltd
  idProduct          0xb45d 
  bcdDevice            0.29
  iManufacturer           3 Chicony Electronics Co.,Ltd.
  iProduct                1 Integrated Camera
  iSerial                 2 0x0001
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x039e
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          4 USB Camera
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         2
      bFunctionClass         14 Video
      bFunctionSubClass       3 Video Interface Collection
      bFunctionProtocol       0 
      iFunction               5 Integrated Camera
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      1 Video Control
      bInterfaceProtocol      0 
      iInterface              5 Integrated Camera
      VideoControl Interface Descriptor:
        bLength                13
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdUVC               1.00
        wTotalLength       0x004e
        dwClockFrequency       15.000000MHz
        bInCollection           1
        baInterfaceNr( 0)       1
      VideoControl Interface Descriptor:
        bLength                18
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0201 Camera Sensor
        bAssocTerminal          0
        iTerminal               0 
        wObjectiveFocalLengthMin      0
        wObjectiveFocalLengthMax      0
        wOcularFocalLength            0
        bControlSize                  3
        bmControls           0x0000000e
          Auto-Exposure Mode
          Auto-Exposure Priority
          Exposure Time (Absolute)
      VideoControl Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      5 (PROCESSING_UNIT)
      Warning: Descriptor too short
        bUnitID                 2
        bSourceID               1
        wMaxMultiplier          0
        bControlSize            2
        bmControls     0x0000157f
          Brightness
          Contrast
          Hue
          Saturation
          Sharpness
          Gamma
          White Balance Temperature
          Backlight Compensation
          Power Line Frequency
          White Balance Temperature, Auto
        iProcessing             0 
        bmVideoStandards     0x09
          None
          SECAM - 625/50
      VideoControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             3
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bSourceID               4
        iTerminal               0 
      VideoControl Interface Descriptor:
        bLength                27
        bDescriptorType        36
        bDescriptorSubtype      6 (EXTENSION_UNIT)
        bUnitID                 4
        guidExtensionCode         {1229a78c-47b4-4094-b0ce-db07386fb938}
        bNumControl             2
        bNrPins                 1
        baSourceID( 0)          2
        bControlSize            2
        bmControls( 0)       0x00
        bmControls( 1)       0x06
        iExtension              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 bytes
        bInterval               6
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      VideoStreaming Interface Descriptor:
        bLength                            15
        bDescriptorType                    36
        bDescriptorSubtype                  1 (INPUT_HEADER)
        bNumFormats                         2
        wTotalLength                   0x02b1
        bEndPointAddress                  129
        bmInfo                              0
        bTerminalLink                       3
        bStillCaptureMethod                 2
        bTriggerSupport                     1
        bTriggerUsage                       0
        bControlSize                        1
        bmaControls( 0)                     0
        bmaControls( 1)                     0
      VideoStreaming Interface Descriptor:
        bLength                            27
        bDescriptorType                    36
        bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
        bFormatIndex                        1
        bNumFrameDescriptors                9
        guidFormat                            {32595559-0000-0010-8000-00aa00389b71}
        bBitsPerPixel                      16
        bDefaultFrameIndex                  1
        bAspectRatioX                       0
        bAspectRatioY                       0
        bmInterlaceFlags                 0x00
          Interlaced stream or variable: No
          Fields per frame: 2 fields
          Field 1 first: No
          Field pattern: Field 1 only
        bCopyProtect                        0
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         1
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            640
        wHeight                           480
        dwMinBitRate                147456000
        dwMaxBitRate                147456000
        dwMaxVideoFrameBufferSize      614400
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         2
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            320
        wHeight                           180
        dwMinBitRate                 27648000
        dwMaxBitRate                 27648000
        dwMaxVideoFrameBufferSize      115200
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         3
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            320
        wHeight                           240
        dwMinBitRate                 36864000
        dwMaxBitRate                 36864000
        dwMaxVideoFrameBufferSize      153600
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         4
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            352
        wHeight                           288
        dwMinBitRate                 48660480
        dwMaxBitRate                 48660480
        dwMaxVideoFrameBufferSize      202752
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         5
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            424
        wHeight                           240
        dwMinBitRate                 48844800
        dwMaxBitRate                 48844800
        dwMaxVideoFrameBufferSize      203520
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         6
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            640
        wHeight                           360
        dwMinBitRate                110592000
        dwMaxBitRate                110592000
        dwMaxVideoFrameBufferSize      460800
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         7
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            848
        wHeight                           480
        dwMinBitRate                130252800
        dwMaxBitRate                130252800
        dwMaxVideoFrameBufferSize      814080
        dwDefaultFrameInterval         500000
        bFrameIntervalType                  1
        dwFrameInterval( 0)            500000
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         8
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            960
        wHeight                           540
        dwMinBitRate                124416000
        dwMaxBitRate                124416000
        dwMaxVideoFrameBufferSize     1036800
        dwDefaultFrameInterval         666666
        bFrameIntervalType                  1
        dwFrameInterval( 0)            666666
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         9
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                           1280
        wHeight                           720
        dwMinBitRate                147456000
        dwMaxBitRate                147456000
        dwMaxVideoFrameBufferSize     1843200
        dwDefaultFrameInterval        1000000
        bFrameIntervalType                  1
        dwFrameInterval( 0)           1000000
      VideoStreaming Interface Descriptor:
        bLength                            42
        bDescriptorType                    36
        bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
        bEndpointAddress                    0
        bNumImageSizePatterns               9
        wWidth( 0)                        640
        wHeight( 0)                       480
        wWidth( 1)                        320
        wHeight( 1)                       180
        wWidth( 2)                        320
        wHeight( 2)                       240
        wWidth( 3)                        352
        wHeight( 3)                       288
        wWidth( 4)                        424
        wHeight( 4)                       240
        wWidth( 5)                        640
        wHeight( 5)                       360
        wWidth( 6)                        848
        wHeight( 6)                       480
        wWidth( 7)                        960
        wHeight( 7)                       540
        wWidth( 8)                       1280
        wHeight( 8)                       720
        bNumCompressionPatterns             0
      VideoStreaming Interface Descriptor:
        bLength                             6
        bDescriptorType                    36
        bDescriptorSubtype                 13 (COLORFORMAT)
        bColorPrimaries                     1 (BT.709,sRGB)
        bTransferCharacteristics            1 (BT.709)
        bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
      VideoStreaming Interface Descriptor:
        bLength                            11
        bDescriptorType                    36
        bDescriptorSubtype                  6 (FORMAT_MJPEG)
        bFormatIndex                        2
        bNumFrameDescriptors                9
        bFlags                              1
          Fixed-size samples: Yes
        bDefaultFrameIndex                  1
        bAspectRatioX                       0
        bAspectRatioY                       0
        bmInterlaceFlags                 0x00
          Interlaced stream or variable: No
          Fields per frame: 1 fields
          Field 1 first: No
          Field pattern: Field 1 only
        bCopyProtect                        0
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         1
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            640
        wHeight                           480
        dwMinBitRate                147456000
        dwMaxBitRate                147456000
        dwMaxVideoFrameBufferSize      614400
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         2
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            320
        wHeight                           180
        dwMinBitRate                 27648000
        dwMaxBitRate                 27648000
        dwMaxVideoFrameBufferSize      115200
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         3
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            320
        wHeight                           240
        dwMinBitRate                 36864000
        dwMaxBitRate                 36864000
        dwMaxVideoFrameBufferSize      153600
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         4
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            352
        wHeight                           288
        dwMinBitRate                 48660480
        dwMaxBitRate                 48660480
        dwMaxVideoFrameBufferSize      202752
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         5
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            424
        wHeight                           240
        dwMinBitRate                 48844800
        dwMaxBitRate                 48844800
        dwMaxVideoFrameBufferSize      203520
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         6
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            640
        wHeight                           360
        dwMinBitRate                110592000
        dwMaxBitRate                110592000
        dwMaxVideoFrameBufferSize      460800
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         7
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            848
        wHeight                           480
        dwMinBitRate                195379200
        dwMaxBitRate                195379200
        dwMaxVideoFrameBufferSize      814080
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         8
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            960
        wHeight                           540
        dwMinBitRate                248832000
        dwMaxBitRate                248832000
        dwMaxVideoFrameBufferSize     1036800
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  7 (FRAME_MJPEG)
        bFrameIndex                         9
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                           1280
        wHeight                           720
        dwMinBitRate                442368000
        dwMaxBitRate                442368000
        dwMaxVideoFrameBufferSize     1843200
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            42
        bDescriptorType                    36
        bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
        bEndpointAddress                    0
        bNumImageSizePatterns               9
        wWidth( 0)                        640
        wHeight( 0)                       480
        wWidth( 1)                        320
        wHeight( 1)                       180
        wWidth( 2)                        320
        wHeight( 2)                       240
        wWidth( 3)                        352
        wHeight( 3)                       288
        wWidth( 4)                        424
        wHeight( 4)                       240
        wWidth( 5)                        640
        wHeight( 5)                       360
        wWidth( 6)                        848
        wHeight( 6)                       480
        wWidth( 7)                        960
        wHeight( 7)                       540
        wWidth( 8)                       1280
        wHeight( 8)                       720
        bNumCompressionPatterns             0
      VideoStreaming Interface Descriptor:
        bLength                             6
        bDescriptorType                    36
        bDescriptorSubtype                 13 (COLORFORMAT)
        bColorPrimaries                     1 (BT.709,sRGB)
        bTransferCharacteristics            1 (BT.709)
        bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0080  1x 128 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       2
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       3
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0400  1x 1024 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       4
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0b00  2x 768 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       5
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0c00  2x 1024 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       6
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x1380  3x 896 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       7
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x1400  3x 1024 bytes
        bInterval               1
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

Bus 001 Device 003: ID 138a:0017 Validity Sensors, Inc. VFS 5011 fingerprint sensor
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass        17 
  bDeviceProtocol       255 
  bMaxPacketSize0         8
  idVendor           0x138a Validity Sensors, Inc.
  idProduct          0x0017 VFS 5011 fingerprint sensor
  bcdDevice            0.78
  iManufacturer           0 
  iProduct                0 
  iSerial                 1 f92d9fd916b0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x002e
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           4
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval               4
Device Status:     0x0000
  (Bus Powered)

Bus 001 Device 002: ID 31e9:0002 Solid State Logic SSL 2+
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x31e9 
  idProduct          0x0002 
  bcdDevice            0.61
  iManufacturer           1 Solid State Logic
  iProduct                3 SSL 2+
  iSerial                 0 
  bNumConfigurations      2
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x019d
    bNumInterfaces          6
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         3
      bFunctionClass          1 Audio
      bFunctionSubClass       0 
      bFunctionProtocol      32 
      iFunction               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol     32 
      iInterface              3 SSL 2+
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               2.00
        bCategory               8
        wTotalLength       0x00a7
        bmControls           0x00
      AudioControl Interface Descriptor:
        bLength                 8
        bDescriptorType        36
        bDescriptorSubtype     10 (CLOCK_SOURCE)
        bClockID               41
        bmAttributes            3 Internal programmable clock 
        bmControls           0x07
          Clock Frequency Control (read/write)
          Clock Validity Control (read-only)
        bAssocTerminal          0
        iClockSource            9 SSL 2+ Internal Clock
      AudioControl Interface Descriptor:
        bLength                 8
        bDescriptorType        36
        bDescriptorSubtype     11 (CLOCK_SELECTOR)
        bClockID               40
        bNrInPins               1
        baCSourceID(0)         41
        bmControls           0x03
          Clock Selector Control (read/write)
        iClockSelector          8 SSL 2+ Clock Selector
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             2
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bCSourceID             40
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames          13 Output 1
        bmControls         0x0000
        iTerminal               6 SSL 2+ 
      AudioControl Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      9 (EXTENSION_UNIT)
        bUnitID                51
        wExtensionCode     0x0000
        bNrInPins               1
        baSourceID(0)           2
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames           0 
        bmControls           0x03
          Enable Control (read/write)
        iExtension              0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID            20
        wTerminalType      0x0301 Speaker
        bAssocTerminal          0
        bSourceID               2
        bCSourceID             40
        bmControls         0x0000
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0201 Microphone
        bAssocTerminal          0
        bCSourceID             40
        bNrChannels             2
        bmChannelConfig    0x00000000
        iChannelNames          17 Input 1
        bmControls         0x0000
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      9 (EXTENSION_UNIT)
        bUnitID                52
        wExtensionCode     0x0000
        bNrInPins               1
        baSourceID(0)           1
        bNrChannels             2
        bmChannelConfig    0x00000000
        iChannelNames           0 
        bmControls           0x03
          Enable Control (read/write)
        iExtension              0 
      AudioControl Interface Descriptor:
        bLength                18
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                11
        bSourceID              52
        bmaControls(0)     0x00000000
        bmaControls(1)     0x00000000
        bmaControls(2)     0x00000000
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID            22
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bSourceID              11
        bCSourceID             40
        bmControls         0x0000
        iTerminal               7 SSL 2+ 
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      9 (EXTENSION_UNIT)
        bUnitID                50
        wExtensionCode     0x0000
        bNrInPins               2
        baSourceID(0)           2
        baSourceID(1)           1
        bNrChannels             6
        bmChannelConfig    0x00000000
        iChannelNames           0 
        bmControls           0x03
          Enable Control (read/write)
        iExtension              0 
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      4 (MIXER_UNIT)
        bUnitID                60
        bNrInPins               1
        baSourceID(0)          50
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames          19 Mix 1
        bmMixerControls(0)   0xff
        bmControls           0xff
          Cluster Control (read/write)
          Underflow Control (read/write)
          Overflow Control (read/write)
        iMixer                255 (error)
      Warning: Junk at end of descriptor (2 bytes):
        00 00 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              4 SSL 2+ 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              4 SSL 2+ 
      AudioStreaming Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           2
        bmControls           0x00
        bFormatType             1
        bmFormats          0x00000001
          PCM
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames          13 Output 1
      AudioStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bSubslotSize            4
        bBitResolution         24
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0190  1x 400 bytes
        bInterval               1
        AudioStreaming Endpoint Descriptor:
          bLength                 8
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bmControls           0x00
          bLockDelayUnits         2 Decoded PCM samples
          wLockDelay         0x0008
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              5 SSL 2+ 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              5 SSL 2+ 
      AudioStreaming Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink          22
        bmControls           0x00
        bFormatType             1
        bmFormats          0x00000001
          PCM
        bNrChannels             2
        bmChannelConfig    0x00000000
        iChannelNames          17 Input 1
      AudioStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bSubslotSize            4
        bBitResolution         24
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes           37
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Implicit feedback Data
        wMaxPacketSize     0x00c8  1x 200 bytes
        bInterval               1
        AudioStreaming Endpoint Descriptor:
          bLength                 8
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bmControls           0x00
          bLockDelayUnits         2 Decoded PCM samples
          wLockDelay         0x0008
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength       0x0009
        bInCollection           1
        baInterfaceNr(0)        1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         1 Audio
      bInterfaceSubClass      3 MIDI Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      MIDIStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength       0x0041
      MIDIStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (MIDI_IN_JACK)
        bJackType               1 Embedded
        bJackID                 1
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (MIDI_IN_JACK)
        bJackType               2 External
        bJackID                 2
        iJack                  12 SSL 2+ MIDI
      MIDIStreaming Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (MIDI_OUT_JACK)
        bJackType               1 Embedded
        bJackID                 3
        bNrInputPins            1
        baSourceID( 0)          2
        BaSourcePin( 0)         1
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (MIDI_OUT_JACK)
        bJackType               2 External
        bJackID                 4
        bNrInputPins            1
        baSourceID( 0)          1
        BaSourcePin( 0)         1
        iJack                  11 SSL 2+ MIDI
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
        bRefresh                0
        bSynchAddress           0
        MIDIStreaming Endpoint Descriptor:
          bLength                 5
          bDescriptorType        37
          bDescriptorSubtype      1 (GENERAL)
          bNumEmbMIDIJack         1
          baAssocJackID( 0)       1
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
        bRefresh                0
        bSynchAddress           0
        MIDIStreaming Endpoint Descriptor:
          bLength                 5
          bDescriptorType        37
          bDescriptorSubtype      1 (GENERAL)
          bNumEmbMIDIJack         1
          baAssocJackID( 0)       3
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        5
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       254 Application Specific Interface
      bInterfaceSubClass      1 Device Firmware Update
      bInterfaceProtocol      1 
      iInterface             10 SSL 2+ DFU
      Device Firmware Upgrade Interface Descriptor:
        bLength                             9
        bDescriptorType                    33
        bmAttributes                        7
          Will Not Detach
          Manifestation Tolerant
          Upload Supported
          Download Supported
        wDetachTimeout                    250 milliseconds
        wTransferSize                      64 bytes
        bcdDFUVersion                   1.10
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x019d
    bNumInterfaces          6
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         3
      bFunctionClass          1 Audio
      bFunctionSubClass       0 
      bFunctionProtocol      32 
      iFunction               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol     32 
      iInterface              3 SSL 2+
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               2.00
        bCategory               8
        wTotalLength       0x00a7
        bmControls           0x00
      AudioControl Interface Descriptor:
        bLength                 8
        bDescriptorType        36
        bDescriptorSubtype     10 (CLOCK_SOURCE)
        bClockID               41
        bmAttributes            3 Internal programmable clock 
        bmControls           0x07
          Clock Frequency Control (read/write)
          Clock Validity Control (read-only)
        bAssocTerminal          0
        iClockSource            9 SSL 2+ Internal Clock
      AudioControl Interface Descriptor:
        bLength                 8
        bDescriptorType        36
        bDescriptorSubtype     11 (CLOCK_SELECTOR)
        bClockID               40
        bNrInPins               1
        baCSourceID(0)         41
        bmControls           0x03
          Clock Selector Control (read/write)
        iClockSelector          8 SSL 2+ Clock Selector
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             2
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bCSourceID             40
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames          13 Output 1
        bmControls         0x0000
        iTerminal               6 SSL 2+ 
      AudioControl Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      9 (EXTENSION_UNIT)
        bUnitID                51
        wExtensionCode     0x0000
        bNrInPins               1
        baSourceID(0)           2
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames           0 
        bmControls           0x03
          Enable Control (read/write)
        iExtension              0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID            20
        wTerminalType      0x0301 Speaker
        bAssocTerminal          0
        bSourceID               2
        bCSourceID             40
        bmControls         0x0000
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0201 Microphone
        bAssocTerminal          0
        bCSourceID             40
        bNrChannels             2
        bmChannelConfig    0x00000000
        iChannelNames          17 Input 1
        bmControls         0x0000
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      9 (EXTENSION_UNIT)
        bUnitID                52
        wExtensionCode     0x0000
        bNrInPins               1
        baSourceID(0)           1
        bNrChannels             2
        bmChannelConfig    0x00000000
        iChannelNames           0 
        bmControls           0x03
          Enable Control (read/write)
        iExtension              0 
      AudioControl Interface Descriptor:
        bLength                18
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                11
        bSourceID              52
        bmaControls(0)     0x00000000
        bmaControls(1)     0x00000000
        bmaControls(2)     0x00000000
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID            22
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bSourceID              11
        bCSourceID             40
        bmControls         0x0000
        iTerminal               7 SSL 2+ 
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      9 (EXTENSION_UNIT)
        bUnitID                50
        wExtensionCode     0x0000
        bNrInPins               2
        baSourceID(0)           2
        baSourceID(1)           1
        bNrChannels             6
        bmChannelConfig    0x00000000
        iChannelNames           0 
        bmControls           0x03
          Enable Control (read/write)
        iExtension              0 
      AudioControl Interface Descriptor:
        bLength                17
        bDescriptorType        36
        bDescriptorSubtype      4 (MIXER_UNIT)
        bUnitID                60
        bNrInPins               1
        baSourceID(0)          50
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames          19 Mix 1
        bmMixerControls(0)   0xff
        bmControls           0xff
          Cluster Control (read/write)
          Underflow Control (read/write)
          Overflow Control (read/write)
        iMixer                255 (error)
      Warning: Junk at end of descriptor (2 bytes):
        00 00 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              4 SSL 2+ 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              4 SSL 2+ 
      AudioStreaming Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           2
        bmControls           0x00
        bFormatType             1
        bmFormats          0x00000001
          PCM
        bNrChannels             4
        bmChannelConfig    0x00000000
        iChannelNames          13 Output 1
      AudioStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bSubslotSize            4
        bBitResolution         24
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0190  1x 400 bytes
        bInterval               1
        AudioStreaming Endpoint Descriptor:
          bLength                 8
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bmControls           0x00
          bLockDelayUnits         2 Decoded PCM samples
          wLockDelay         0x0008
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              5 SSL 2+ 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol     32 
      iInterface              5 SSL 2+ 
      AudioStreaming Interface Descriptor:
        bLength                16
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink          22
        bmControls           0x00
        bFormatType             1
        bmFormats          0x00000001
          PCM
        bNrChannels             2
        bmChannelConfig    0x00000000
        iChannelNames          17 Input 1
      AudioStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bSubslotSize            4
        bBitResolution         24
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes           37
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Implicit feedback Data
        wMaxPacketSize     0x00c8  1x 200 bytes
        bInterval               1
        AudioStreaming Endpoint Descriptor:
          bLength                 8
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bmControls           0x00
          bLockDelayUnits         2 Decoded PCM samples
          wLockDelay         0x0008
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength       0x0009
        bInCollection           1
        baInterfaceNr(0)        1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         1 Audio
      bInterfaceSubClass      3 MIDI Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      MIDIStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength       0x0041
      MIDIStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (MIDI_IN_JACK)
        bJackType               1 Embedded
        bJackID                 1
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (MIDI_IN_JACK)
        bJackType               2 External
        bJackID                 2
        iJack                  12 SSL 2+ MIDI
      MIDIStreaming Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (MIDI_OUT_JACK)
        bJackType               1 Embedded
        bJackID                 3
        bNrInputPins            1
        baSourceID( 0)          2
        BaSourcePin( 0)         1
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (MIDI_OUT_JACK)
        bJackType               2 External
        bJackID                 4
        bNrInputPins            1
        baSourceID( 0)          1
        BaSourcePin( 0)         1
        iJack                  11 SSL 2+ MIDI
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
        bRefresh                0
        bSynchAddress           0
        MIDIStreaming Endpoint Descriptor:
          bLength                 5
          bDescriptorType        37
          bDescriptorSubtype      1 (GENERAL)
          bNumEmbMIDIJack         1
          baAssocJackID( 0)       1
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
        bRefresh                0
        bSynchAddress           0
        MIDIStreaming Endpoint Descriptor:
          bLength                 5
          bDescriptorType        37
          bDescriptorSubtype      1 (GENERAL)
          bNumEmbMIDIJack         1
          baAssocJackID( 0)       3
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        5
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       254 Application Specific Interface
      bInterfaceSubClass      1 Device Firmware Update
      bInterfaceProtocol      1 
      iInterface             10 SSL 2+ DFU
      Device Firmware Upgrade Interface Descriptor:
        bLength                             9
        bDescriptorType                    33
        bmAttributes                        7
          Will Not Detach
          Manifestation Tolerant
          Upload Supported
          Download Supported
        wDetachTimeout                    250 milliseconds
        wTransferSize                      64 bytes
        bcdDFUVersion                   1.10
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  bNumConfigurations      2
Device Status:     0x0000
  (Bus Powered)

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            5.07
  iManufacturer           3 Linux 5.7.0-3-MANJARO xhci-hcd
  iProduct                2 xHCI Host Controller
  iSerial                 1 0000:00:14.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0019
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength              11
  bDescriptorType      41
  nNbrPorts            11
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
    TT think time 8 FS bits
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x08 0x00
  PortPwrCtrlMask    0xff 0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0503 highspeed power enable connect
   Port 3: 0000.0100 power
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0103 power enable connect
   Port 7: 0000.0100 power
   Port 8: 0000.0503 highspeed power enable connect
   Port 9: 0000.0100 power
   Port 10: 0000.0100 power
   Port 11: 0000.0100 power
Device Status:     0x0001
  Self Powered

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-10  7:44         ` Laurence Tratt
@ 2020-06-10 13:49           ` Alexander Tsoy
  2020-06-10 16:29             ` Laurence Tratt
  0 siblings, 1 reply; 9+ messages in thread
From: Alexander Tsoy @ 2020-06-10 13:49 UTC (permalink / raw)
  To: Laurence Tratt; +Cc: Takashi Iwai, alsa-devel, Thomas Ebeling

В Ср, 10/06/2020 в 08:44 +0100, Laurence Tratt пишет:
> On Mon, Jun 08, 2020 at 05:43:05PM +0300, Alexander Tsoy wrote:
> 
> Hello Alexander,
> 
> > > The frame size calculation in USB-audio driver wasn't accurate
> > > enough
> > > because of the computation in Q16.16 format.  It works OK for
> > > async mode,
> > > but for others, it can accumulate rounding errors.  The recent
> > > change
> > > corrected it for a more precise way.
> > I believe that SSL and Audient devices operates in async mode.
> > Would be
> > nice to see "lsusb -v" output for them.
> 
> Please find attached the "lsusb -v" output.

Thanks! So SSL 2+ is indeed currently needs implicit feedback quirk.
The question is why it didn't help in your case.


^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-10 13:49           ` Alexander Tsoy
@ 2020-06-10 16:29             ` Laurence Tratt
  2020-06-11 12:30               ` Takashi Iwai
  0 siblings, 1 reply; 9+ messages in thread
From: Laurence Tratt @ 2020-06-10 16:29 UTC (permalink / raw)
  To: Alexander Tsoy; +Cc: Takashi Iwai, alsa-devel, Thomas Ebeling

On Wed, Jun 10, 2020 at 04:49:14PM +0300, Alexander Tsoy wrote:

Hello Alexander,

> Thanks! So SSL 2+ is indeed currently needs implicit feedback quirk.
> The question is why it didn't help in your case.

It didn't work because I was an idiot and used the wrong manufacturer ID.
When I fixed that typo, the drift disappeared. Patch attached!

[It's reasonable to assume that this will also work for the SSL2, but I
don't know its ID: it might use the same ID as the SSL2+ or perhaps its
0x0001. Unfortunately I suspect we'll have to wait until one is observed in
the wild to know.]


Laurie


diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 8a05dcb134..abf726c49f 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -367,6 +367,7 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
 		ifnum = 0;
 		goto add_sync_ep_from_ifnum;
 	case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
+	case USB_ID(0x31e9, 0x0002): /* Solid State Logic SSL2+ */
 		ep = 0x81;
 		ifnum = 2;
 		goto add_sync_ep_from_ifnum;

^ permalink raw reply related	[flat|nested] 9+ messages in thread

* Re: Clock sync problem?
  2020-06-10 16:29             ` Laurence Tratt
@ 2020-06-11 12:30               ` Takashi Iwai
  0 siblings, 0 replies; 9+ messages in thread
From: Takashi Iwai @ 2020-06-11 12:30 UTC (permalink / raw)
  To: Laurence Tratt; +Cc: Alexander Tsoy, Thomas Ebeling, alsa-devel

On Wed, 10 Jun 2020 18:29:12 +0200,
Laurence Tratt wrote:
> 
> On Wed, Jun 10, 2020 at 04:49:14PM +0300, Alexander Tsoy wrote:
> 
> Hello Alexander,
> 
> > Thanks! So SSL 2+ is indeed currently needs implicit feedback quirk.
> > The question is why it didn't help in your case.
> 
> It didn't work because I was an idiot and used the wrong manufacturer ID.
> When I fixed that typo, the drift disappeared. Patch attached!

Great, care to submit the patch in a proper format?

> [It's reasonable to assume that this will also work for the SSL2, but I
> don't know its ID: it might use the same ID as the SSL2+ or perhaps its
> 0x0001. Unfortunately I suspect we'll have to wait until one is observed in
> the wild to know.]

Yes, the addition can be done easily at any time, so let's take the
known working one at first.


thanks,

Takashi

> 
> 
> Laurie
> 
> 
> diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
> index 8a05dcb134..abf726c49f 100644
> --- a/sound/usb/pcm.c
> +++ b/sound/usb/pcm.c
> @@ -367,6 +367,7 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
>  		ifnum = 0;
>  		goto add_sync_ep_from_ifnum;
>  	case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
> +	case USB_ID(0x31e9, 0x0002): /* Solid State Logic SSL2+ */
>  		ep = 0x81;
>  		ifnum = 2;
>  		goto add_sync_ep_from_ifnum;
> 

^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2020-06-11 12:31 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-07 13:39 Clock sync problem? Laurence Tratt
2020-06-08  7:19 ` Takashi Iwai
2020-06-08  8:32   ` Thomas Ebeling
2020-06-08 13:35     ` Takashi Iwai
2020-06-08 14:43       ` Alexander Tsoy
2020-06-10  7:44         ` Laurence Tratt
2020-06-10 13:49           ` Alexander Tsoy
2020-06-10 16:29             ` Laurence Tratt
2020-06-11 12:30               ` Takashi Iwai

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