Compute Stick baytrail audio problem

Compute Stick baytrail audio problem

[Giacomo Comes]

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Hi,
I have recently bought a Intel Compute Stick and I am having trouble with the audio.
Intel provides a custom Ubuntu release that support audio, but I want to run the 
linux distribution of my choice on it (openSUSE 13.2 for the moment).

In order to have HDMI audio support it is necessary to compile a kernel with this patch
(https://raw.githubusercontent.com/01org/baytrailaudio/master/hdmi_audio_20150319.patch)
provided by Intel for kernel 3.16.7 (https://01.org/ubuntu-hdmi)

I compiled the openSUSE kernel using the default openSUSE .config plus the following:
CONFIG_SUPPORT_HDMI=y
CONFIG_SND_SOC=m
CONFIG_SND_SOC_INTEL_SST=m
CONFIG_SND_SOC_INTEL_BYT_RT5640_MACH=m

I booted the new kernel and aplay -l gives this output:
**** List of PLAYBACK Hardware Devices ****
card 0: IntelHDMI [IntelHDMI], device 0: IntelHDMI [IntelHDMI]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

but when I run:
  aplay /usr/share/sounds/alsa/test.wav
the audio plays for .2 seconds and then nothing more.
Sometime it will play later a little bit more and stop again.
At some point these messages appears:
underrun!!! (at least 29325.946 ms long)
underrun!!! (at least 1535.889 ms long)
underrun!!! (at least 3196.213 ms long)


I have looked around on google for a hint on how to fix this issue but I found nothing.
Any idea where to look for a solution?

Attached there are the dmesg and lsmod output for ubuntu
with the working audio and openSUSE 13.2 plus patch
without the working audio.
I can provide any other information you need.

Thanks for any help.
Giacomo

[-- Attachment #2: dmesg-lsmod.tar.xz --]
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Re: Compute Stick baytrail audio problem

[Pierre-Louis Bossart]

On 02/19/2016 02:39 PM, Giacomo Comes wrote:
> Hi,
> I have recently bought a Intel Compute Stick and I am having trouble with the audio.
> Intel provides a custom Ubuntu release that support audio, but I want to run the 
> linux distribution of my choice on it (openSUSE 13.2 for the moment).
> 
> In order to have HDMI audio support it is necessary to compile a kernel with this patch
> (https://raw.githubusercontent.com/01org/baytrailaudio/master/hdmi_audio_20150319.patch)
> provided by Intel for kernel 3.16.7 (https://01.org/ubuntu-hdmi)
> 
> I compiled the openSUSE kernel using the default openSUSE .config plus the following:
> CONFIG_SUPPORT_HDMI=y
> CONFIG_SND_SOC=m
> CONFIG_SND_SOC_INTEL_SST=m
> CONFIG_SND_SOC_INTEL_BYT_RT5640_MACH=m
> 
> I booted the new kernel and aplay -l gives this output:
> **** List of PLAYBACK Hardware Devices ****
> card 0: IntelHDMI [IntelHDMI], device 0: IntelHDMI [IntelHDMI]
>   Subdevices: 0/1
>   Subdevice #0: subdevice #0
> 
> but when I run:
>   aplay /usr/share/sounds/alsa/test.wav
> the audio plays for .2 seconds and then nothing more.
> Sometime it will play later a little bit more and stop again.
> At some point these messages appears:
> underrun!!! (at least 29325.946 ms long)
> underrun!!! (at least 1535.889 ms long)
> underrun!!! (at least 3196.213 ms long)
> 
> 
> I have looked around on google for a hint on how to fix this issue but I found nothing.
> Any idea where to look for a solution?
> 
> Attached there are the dmesg and lsmod output for ubuntu
> with the working audio and openSUSE 13.2 plus patch
> without the working audio.
> I can provide any other information you need.

There are enough messages that make me believe something is very wrong from the start

19.664486] had: ******** HAD DRIVER loading.. Ver: 0.01.003
[   19.664549] hdmi_audio_probe dma_mask: 0
[   19.664937] card->dev is NULL!!!!! Should not be this case
[   19.668176] [drm] mid_hdmi_audio_register: Scheduling HDMI audio work queue
[   19.670745] [drm:i915_had_wq] *ERROR* Checking for HDMI connection at boot

Some of us at Intel are trying to clean this up but it'll take time. 

Re: Compute Stick baytrail audio problem

[Giacomo Comes]

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On Sat, Feb 20, 2016 at 09:12:42AM -0600, Pierre-Louis Bossart wrote:
> On 02/19/2016 02:39 PM, Giacomo Comes wrote:
> > Hi,
> > I have recently bought a Intel Compute Stick and I am having trouble with the audio.
> > Intel provides a custom Ubuntu release that support audio, but I want to run the 
> > linux distribution of my choice on it (openSUSE 13.2 for the moment).
> > 
> > In order to have HDMI audio support it is necessary to compile a kernel with this patch
> > (https://raw.githubusercontent.com/01org/baytrailaudio/master/hdmi_audio_20150319.patch)
> > provided by Intel for kernel 3.16.7 (https://01.org/ubuntu-hdmi)
> > 
> > I compiled the openSUSE kernel using the default openSUSE .config plus the following:
> > CONFIG_SUPPORT_HDMI=y
> > CONFIG_SND_SOC=m
> > CONFIG_SND_SOC_INTEL_SST=m
> > CONFIG_SND_SOC_INTEL_BYT_RT5640_MACH=m
> > 
> > I booted the new kernel and aplay -l gives this output:
> > **** List of PLAYBACK Hardware Devices ****
> > card 0: IntelHDMI [IntelHDMI], device 0: IntelHDMI [IntelHDMI]
> >   Subdevices: 0/1
> >   Subdevice #0: subdevice #0
> > 
> > but when I run:
> >   aplay /usr/share/sounds/alsa/test.wav
> > the audio plays for .2 seconds and then nothing more.
> > Sometime it will play later a little bit more and stop again.
> > At some point these messages appears:
> > underrun!!! (at least 29325.946 ms long)
> > underrun!!! (at least 1535.889 ms long)
> > underrun!!! (at least 3196.213 ms long)
> > 
> > 
> > I have looked around on google for a hint on how to fix this issue but I found nothing.
> > Any idea where to look for a solution?
> > 
> > Attached there are the dmesg and lsmod output for ubuntu
> > with the working audio and openSUSE 13.2 plus patch
> > without the working audio.
> > I can provide any other information you need.

Thank you for answering. I'm glad that at Intel you are trying to make
this work properly. I think a proper linux support for your device can only
increase his sales. I myself intend to buy at least 5 more for personal use,
and, being a system administrator, I have plan to deploy about 20 Compute Stick
in my work place. But before that happens, a better linux support is advisable.
 
> There are enough messages that make me believe something is very wrong from the start
> 
> 19.664486] had: ******** HAD DRIVER loading.. Ver: 0.01.003
> [   19.664549] hdmi_audio_probe dma_mask: 0
> [   19.664937] card->dev is NULL!!!!! Should not be this case
> [   19.668176] [drm] mid_hdmi_audio_register: Scheduling HDMI audio work queue
> [   19.670745] [drm:i915_had_wq] *ERROR* Checking for HDMI connection at boot
> 
> Some of us at Intel are trying to clean this up but it'll take time. 

I think the issue I'm having is not with the driver itself. I have followed another 
path. Instead of patching and recompiling the kernel, I have used this source:
http://oem.archive.canonical.com/updates/pool/public/o/oem-audio-i915-baytrail-dkms/oem-audio-i915-baytrail-dkms_0.20150605.tar.gz
and installed the hdmi_audio module using dkms.
After reboot the message:
  card->dev is NULL!!!!! Should not be this case
is missing (see attached dmesg output) but still when I try to play a sound aplay hangs as before.
Can anybody tell me were to look for the problem I'm having?
I suspect a configuration/initialization problem.
The same module works with the ubuntu image for the Compute Stick.

Giacomo

[-- Attachment #2: dmesg.suse.dkms --]
[-- Type: text/plain, Size: 43946 bytes --]

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.16.7-32-default (geeko@buildhost) (gcc version 4.8.3 20140627 [gcc-4_8-branch revision 212064] (SUSE Linux) ) #1 SMP Wed Jan 20 14:05:33 UTC 2016 (d4df98a)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.16.7-32-default root=UUID=646f82c8-40d4-40fd-97d7-8f2a6db7feff ro modprobe.blacklist=floppy resume=/dev/disk/by-uuid/0b44ddb4-82e5-4aeb-b21f-08708266165f splash=verbose quiet showopts
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000008efff] usable
[    0.000000] BIOS-e820: [mem 0x000000000008f000-0x000000000008ffff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x0000000000090000-0x000000000009dfff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001fffffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000020000000-0x00000000201fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000020200000-0x0000000079f08fff] usable
[    0.000000] BIOS-e820: [mem 0x0000000079f09000-0x0000000079f38fff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000079f39000-0x0000000079f66fff] ACPI data
[    0.000000] BIOS-e820: [mem 0x0000000079f67000-0x000000007a01afff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x000000007a01b000-0x000000007a1defff] reserved
[    0.000000] BIOS-e820: [mem 0x000000007a1df000-0x000000007a1e9fff] usable
[    0.000000] BIOS-e820: [mem 0x000000007a1ea000-0x000000007a1eafff] reserved
[    0.000000] BIOS-e820: [mem 0x000000007a1eb000-0x000000007acfffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000e00f8000-0x00000000e00f8fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed01000-0x00000000fed01fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed08000-0x00000000fed08fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ff990000-0x00000000ffffffff] reserved
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] efi: EFI v2.31 by American Megatrends
[    0.000000] efi:  ACPI=0x79f66000  ACPI 2.0=0x79f66014  SMBIOS=0x7a092c18 
[    0.000000] efi: mem00: type=7, attr=0xf, range=[0x0000000000000000-0x0000000000001000) (0MB)
[    0.000000] efi: mem01: type=2, attr=0xf, range=[0x0000000000001000-0x0000000000002000) (0MB)
[    0.000000] efi: mem02: type=7, attr=0xf, range=[0x0000000000002000-0x000000000008f000) (0MB)
[    0.000000] efi: mem03: type=10, attr=0xf, range=[0x000000000008f000-0x0000000000090000) (0MB)
[    0.000000] efi: mem04: type=7, attr=0xf, range=[0x0000000000090000-0x000000000009e000) (0MB)
[    0.000000] efi: mem05: type=0, attr=0xf, range=[0x000000000009e000-0x00000000000a0000) (0MB)
[    0.000000] efi: mem06: type=7, attr=0xf, range=[0x0000000000100000-0x0000000001000000) (15MB)
[    0.000000] efi: mem07: type=2, attr=0xf, range=[0x0000000001000000-0x00000000022ac000) (18MB)
[    0.000000] efi: mem08: type=7, attr=0xf, range=[0x00000000022ac000-0x0000000020000000) (477MB)
[    0.000000] efi: mem09: type=0, attr=0xf, range=[0x0000000020000000-0x0000000020200000) (2MB)
[    0.000000] efi: mem10: type=7, attr=0xf, range=[0x0000000020200000-0x000000003f7a2000) (501MB)
[    0.000000] efi: mem11: type=2, attr=0xf, range=[0x000000003f7a2000-0x0000000040000000) (8MB)
[    0.000000] efi: mem12: type=7, attr=0xf, range=[0x0000000040000000-0x0000000055bda000) (347MB)
[    0.000000] efi: mem13: type=2, attr=0xf, range=[0x0000000055bda000-0x000000007341a000) (472MB)
[    0.000000] efi: mem14: type=7, attr=0xf, range=[0x000000007341a000-0x0000000073420000) (0MB)
[    0.000000] efi: mem15: type=2, attr=0xf, range=[0x0000000073420000-0x00000000735e3000) (1MB)
[    0.000000] efi: mem16: type=1, attr=0xf, range=[0x00000000735e3000-0x0000000073708000) (1MB)
[    0.000000] efi: mem17: type=4, attr=0xf, range=[0x0000000073708000-0x0000000076d20000) (54MB)
[    0.000000] efi: mem18: type=7, attr=0xf, range=[0x0000000076d20000-0x0000000079d05000) (47MB)
[    0.000000] efi: mem19: type=3, attr=0xf, range=[0x0000000079d05000-0x0000000079f09000) (2MB)
[    0.000000] efi: mem20: type=0, attr=0xf, range=[0x0000000079f09000-0x0000000079f39000) (0MB)
[    0.000000] efi: mem21: type=9, attr=0xf, range=[0x0000000079f39000-0x0000000079f67000) (0MB)
[    0.000000] efi: mem22: type=10, attr=0xf, range=[0x0000000079f67000-0x000000007a01b000) (0MB)
[    0.000000] efi: mem23: type=6, attr=0x800000000000000f, range=[0x000000007a01b000-0x000000007a16c000) (1MB)
[    0.000000] efi: mem24: type=5, attr=0x800000000000000f, range=[0x000000007a16c000-0x000000007a1df000) (0MB)
[    0.000000] efi: mem25: type=7, attr=0xf, range=[0x000000007a1df000-0x000000007a1e0000) (0MB)
[    0.000000] efi: mem26: type=4, attr=0xf, range=[0x000000007a1e0000-0x000000007a1ea000) (0MB)
[    0.000000] efi: mem27: type=6, attr=0x800000000000000f, range=[0x000000007a1ea000-0x000000007a1eb000) (0MB)
[    0.000000] efi: mem28: type=4, attr=0xf, range=[0x000000007a1eb000-0x000000007acf5000) (11MB)
[    0.000000] efi: mem29: type=2, attr=0xf, range=[0x000000007acf5000-0x000000007acf6000) (0MB)
[    0.000000] efi: mem30: type=4, attr=0xf, range=[0x000000007acf6000-0x000000007ad00000) (0MB)
[    0.000000] efi: mem31: type=11, attr=0x8000000000000001, range=[0x00000000e00f8000-0x00000000e00f9000) (0MB)
[    0.000000] efi: mem32: type=11, attr=0x8000000000000001, range=[0x00000000fed01000-0x00000000fed02000) (0MB)
[    0.000000] efi: mem33: type=11, attr=0x8000000000000001, range=[0x00000000fed08000-0x00000000fed09000) (0MB)
[    0.000000] efi: mem34: type=11, attr=0x8000000000000001, range=[0x00000000ff990000-0x0000000100000000) (6MB)
[    0.000000] SMBIOS 2.8 present.
[    0.000000] DMI: Intel Corporation STCK1A32WFC/STCK1A32WFC, BIOS FCBYT10H.86A.0031.2015.1027.1417 10/27/2015
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] AGP: No AGP bridge found
[    0.000000] e820: last_pfn = 0x7ad00 max_arch_pfn = 0x400000000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask FC0000000 write-back
[    0.000000]   1 base 040000000 mask FE0000000 write-back
[    0.000000]   2 base 060000000 mask FF0000000 write-back
[    0.000000]   3 base 070000000 mask FF8000000 write-back
[    0.000000]   4 base 070000000 mask FF8000000 write-back
[    0.000000]   5 base 078000000 mask FFC000000 write-back
[    0.000000]   6 base 07B000000 mask FFF000000 uncachable
[    0.000000]   7 base 07AE00000 mask FFFE00000 uncachable
[    0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] Base memory trampoline at [ffff880000098000] 98000 size 24576
[    0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[    0.000000]  [mem 0x00000000-0x000fffff] page 4k
[    0.000000] BRK [0x01ffe000, 0x01ffefff] PGTABLE
[    0.000000] BRK [0x01fff000, 0x01ffffff] PGTABLE
[    0.000000] BRK [0x02000000, 0x02000fff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x79a00000-0x79bfffff]
[    0.000000]  [mem 0x79a00000-0x79bfffff] page 2M
[    0.000000] BRK [0x02001000, 0x02001fff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x78000000-0x799fffff]
[    0.000000]  [mem 0x78000000-0x799fffff] page 2M
[    0.000000] init_memory_mapping: [mem 0x00100000-0x1fffffff]
[    0.000000]  [mem 0x00100000-0x001fffff] page 4k
[    0.000000]  [mem 0x00200000-0x1fffffff] page 2M
[    0.000000] init_memory_mapping: [mem 0x20200000-0x77ffffff]
[    0.000000]  [mem 0x20200000-0x77ffffff] page 2M
[    0.000000] init_memory_mapping: [mem 0x79c00000-0x79f08fff]
[    0.000000]  [mem 0x79c00000-0x79dfffff] page 2M
[    0.000000]  [mem 0x79e00000-0x79f08fff] page 4k
[    0.000000] BRK [0x02002000, 0x02002fff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x7a1df000-0x7a1e9fff]
[    0.000000]  [mem 0x7a1df000-0x7a1e9fff] page 4k
[    0.000000] BRK [0x02003000, 0x02003fff] PGTABLE
[    0.000000] init_memory_mapping: [mem 0x7a1eb000-0x7acfffff]
[    0.000000]  [mem 0x7a1eb000-0x7a1fffff] page 4k
[    0.000000]  [mem 0x7a200000-0x7abfffff] page 2M
[    0.000000]  [mem 0x7ac00000-0x7acfffff] page 4k
[    0.000000] RAMDISK: [mem 0x3f7a2000-0x3fffafff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: RSDP 0x0000000079F66014 000024 (v02 INTEL )
[    0.000000] ACPI: XSDT 0x0000000079F65100 00009C (v01 INTEL  FCBYT10H 00000003 MSFT 0100000D)
[    0.000000] ACPI: FACP 0x0000000079F62000 00010C (v05 INTEL  FCBYT10H 00000003 AMI  0100000D)
[    0.000000] ACPI: DSDT 0x0000000079F4E000 00F991 (v02 INTEL  FCBYT10H 00000003 AMI  0100000D)
[    0.000000] ACPI: FACS 0x0000000079FD4000 000040
[    0.000000] ACPI: UEFI 0x0000000079FD6000 000042 (v01 INTEL  FCBYT10H 00000000      00000000)
[    0.000000] ACPI: OEM0 0x0000000079F64000 000084 (v05 INTEL  BATTERY  00000003 AMI  0100000D)
[    0.000000] ACPI: DBG2 0x0000000079F63000 000072 (v00 INTEL  INTLDBG2 00000003 AMI  0100000D)
[    0.000000] ACPI: HPET 0x0000000079F61000 000038 (v01 INTEL  FCBYT10H 00000003 AMI  0100000D)
[    0.000000] ACPI: LPIT 0x0000000079F60000 000104 (v01 INTEL  FCBYT10H 00000003 AMI  0100000D)
[    0.000000] ACPI: APIC 0x0000000079F5F000 00006C (v03 INTEL  FCBYT10H 00000003 AMI  0100000D)
[    0.000000] ACPI: MCFG 0x0000000079F5E000 00003C (v01 INTEL  FCBYT10H 00000003 AMI  0100000D)
[    0.000000] ACPI: FPDT 0x0000000079F47000 000044 (v01 INTEL  FCBYT10H 01072009 AMI  00010013)
[    0.000000] ACPI: SSDT 0x0000000079F46000 000763 (v01 PmRef  CpuPm    00003000 INTL 20061109)
[    0.000000] ACPI: SSDT 0x0000000079F45000 000290 (v01 PmRef  Cpu0Tst  00003000 INTL 20061109)
[    0.000000] ACPI: SSDT 0x0000000079F44000 00017A (v01 PmRef  ApTst    00003000 INTL 20061109)
[    0.000000] ACPI: BGRT 0x0000000079F43000 000038 (v01 INTEL  FCBYT10H 01072009 AMI  00010013)
[    0.000000] ACPI: CSRT 0x0000000079F4D000 00014C (v00 INTEL  FCBYT10H 00000005 INTL 20120624)
[    0.000000] ACPI: MSDM 0x0000000079F4C000 000055 (v03 Intel  COMSTKFC 01072009 AMI  1D000000)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000007acfffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x7acfffff]
[    0.000000]   NODE_DATA [mem 0x79cf1000-0x79d04fff]
[    0.000000]  [ffffea0000000000-ffffea0001bfffff] PMD -> [ffff880077400000-ffff880078ffffff] on node 0
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00001000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0xffffffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00001000-0x0008efff]
[    0.000000]   node   0: [mem 0x00090000-0x0009dfff]
[    0.000000]   node   0: [mem 0x00100000-0x1fffffff]
[    0.000000]   node   0: [mem 0x20200000-0x79f08fff]
[    0.000000]   node   0: [mem 0x7a1df000-0x7a1e9fff]
[    0.000000]   node   0: [mem 0x7a1eb000-0x7acfffff]
[    0.000000] On node 0 totalpages: 501701
[    0.000000]   DMA zone: 56 pages used for memmap
[    0.000000]   DMA zone: 21 pages reserved
[    0.000000]   DMA zone: 3996 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 6822 pages used for memmap
[    0.000000]   DMA32 zone: 497705 pages, LIFO batch:31
[    0.000000] tboot: non-0 tboot_addr but it is not of type E820_RESERVED
[    0.000000] x86/hpet: Will disable the HPET for this platform because it's not reliable
[    0.000000] Reserving Intel graphics stolen memory at 0x7b000000-0x7effffff
[    0.000000] ACPI: PM-Timer IO Port: 0x408
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled)
[    0.000000] ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-86
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[    0.000000] smpboot: Allowing 4 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 103
[    0.000000] PM: Registered nosave memory: [mem 0x0008f000-0x0008ffff]
[    0.000000] PM: Registered nosave memory: [mem 0x0009e000-0x0009ffff]
[    0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000fffff]
[    0.000000] PM: Registered nosave memory: [mem 0x20000000-0x201fffff]
[    0.000000] PM: Registered nosave memory: [mem 0x79f09000-0x79f38fff]
[    0.000000] PM: Registered nosave memory: [mem 0x79f39000-0x79f66fff]
[    0.000000] PM: Registered nosave memory: [mem 0x79f67000-0x7a01afff]
[    0.000000] PM: Registered nosave memory: [mem 0x7a01b000-0x7a1defff]
[    0.000000] PM: Registered nosave memory: [mem 0x7a1ea000-0x7a1eafff]
[    0.000000] e820: [mem 0x7f000000-0xe00f7fff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on bare hardware
[    0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:4 nr_node_ids:1
[    0.000000] PERCPU: Embedded 27 pages/cpu @ffff880079a00000 s78656 r8192 d23744 u524288
[    0.000000] pcpu-alloc: s78656 r8192 d23744 u524288 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 1 2 3 
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total pages: 494802
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.16.7-32-default root=UUID=646f82c8-40d4-40fd-97d7-8f2a6db7feff ro modprobe.blacklist=floppy resume=/dev/disk/by-uuid/0b44ddb4-82e5-4aeb-b21f-08708266165f splash=verbose quiet showopts
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] AGP: Checking aperture...
[    0.000000] AGP: No AGP bridge found
[    0.000000] Memory: 1883484K/2006804K available (5982K kernel code, 966K rwdata, 4548K rodata, 1556K init, 1528K bss, 123320K reserved)
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	RCU dyntick-idle grace-period acceleration is enabled.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=512 to nr_cpu_ids=4.
[    0.000000] 	Offload RCU callbacks from all CPUs
[    0.000000] 	Offload RCU callbacks from CPUs: 0-3.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.000000] NR_IRQS:33024 nr_irqs:1024 16
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] allocated 8388608 bytes of page_cgroup
[    0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups
[    0.000000] Maximum core-clock to bus-clock ratio: 0x10
[    0.000000] Resolved frequency ID: 0, frequency: 83200 KHz
[    0.000000] TSC runs at 1331200 KHz
[    0.000000] lapic_timer_frequency = 332800
[    0.000000] tsc: Detected 1331.200 MHz processor
[    0.000050] Calibrating delay loop (skipped), value calculated using timer frequency.. 2662.40 BogoMIPS (lpj=5324800)
[    0.000058] pid_max: default: 32768 minimum: 301
[    0.000091] ACPI: Core revision 20140424
[    0.061408] ACPI: All ACPI Tables successfully acquired
[    0.062622] Security Framework initialized
[    0.062646] AppArmor: AppArmor initialized
[    0.063048] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.064467] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.065114] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.065129] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.065694] Initializing cgroup subsys memory
[    0.065767] Initializing cgroup subsys devices
[    0.065789] Initializing cgroup subsys freezer
[    0.065799] Initializing cgroup subsys net_cls
[    0.065815] Initializing cgroup subsys blkio
[    0.065829] Initializing cgroup subsys perf_event
[    0.065837] Initializing cgroup subsys net_prio
[    0.065858] Initializing cgroup subsys hugetlb
[    0.065900] CPU: Physical Processor ID: 0
[    0.065905] CPU: Processor Core ID: 0
[    0.065912] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)
[    0.070850] mce: CPU supports 6 MCE banks
[    0.070864] CPU0: Thermal monitoring enabled (TM1)
[    0.070877] Last level iTLB entries: 4KB 48, 2MB 0, 4MB 0
Last level dTLB entries: 4KB 128, 2MB 16, 4MB 16, 1GB 0
tlb_flushall_shift: 6
[    0.071058] Freeing SMP alternatives memory: 24K (ffffffff81e78000 - ffffffff81e7e000)
[    0.079099] ftrace: allocating 23603 entries in 93 pages
[    0.097101] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
[    0.136784] smpboot: CPU0: Intel(R) Atom(TM) CPU  Z3735F @ 1.33GHz (fam: 06, model: 37, stepping: 08)
[    0.136815] TSC deadline timer enabled
[    0.136860] Performance Events: PEBS fmt2+, 8-deep LBR, Silvermont events, full-width counters, Intel PMU driver.
[    0.136881] ... version:                3
[    0.136885] ... bit width:              40
[    0.136888] ... generic registers:      2
[    0.136891] ... value mask:             000000ffffffffff
[    0.136894] ... max period:             000000ffffffffff
[    0.136897] ... fixed-purpose events:   3
[    0.136900] ... event mask:             0000000700000003
[    0.141197] x86: Booting SMP configuration:
[    0.141205] .... node  #0, CPUs:      #1 #2 #3
[    0.195706] x86: Booted up 1 node, 4 CPUs
[    0.195714] smpboot: Total of 4 processors activated (10649.60 BogoMIPS)
[    0.196429] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
[    0.196994] devtmpfs: initialized
[    0.207570] PM: Registering ACPI NVS region [mem 0x0008f000-0x0008ffff] (4096 bytes)
[    0.207577] PM: Registering ACPI NVS region [mem 0x79f67000-0x7a01afff] (737280 bytes)
[    0.210571] pinctrl core: initialized pinctrl subsystem
[    0.210645] RTC time: 23:41:22, date: 02/22/16
[    0.210815] NET: Registered protocol family 16
[    0.211255] cpuidle: using governor ladder
[    0.211264] cpuidle: using governor menu
[    0.211439] ACPI: bus type PCI registered
[    0.211445] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    0.211687] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.211694] PCI: not using MMCONFIG
[    0.211698] PCI: Using configuration type 1 for base access
[    0.220482] ACPI: Added _OSI(Module Device)
[    0.220488] ACPI: Added _OSI(Processor Device)
[    0.220493] ACPI: Added _OSI(3.0 _SCP Extensions)
[    0.220496] ACPI: Added _OSI(Processor Aggregator Device)
[    0.261485] ACPI: Dynamic OEM Table Load:
[    0.261508] ACPI: SSDT 0xFFFF88007A83D800 00047D (v01 PmRef  Cpu0Ist  00003000 INTL 20061109)
[    0.263766] ACPI: Dynamic OEM Table Load:
[    0.263785] ACPI: SSDT 0xFFFF88007A83D000 000433 (v01 PmRef  Cpu0Cst  00003001 INTL 20061109)
[    0.276570] ACPI: Dynamic OEM Table Load:
[    0.276587] ACPI: SSDT 0xFFFF88007A82D400 00015F (v01 PmRef  ApIst    00003000 INTL 20061109)
[    0.283591] ACPI: Dynamic OEM Table Load:
[    0.283608] ACPI: SSDT 0xFFFF88007A85FC40 00008D (v01 PmRef  ApCst    00003000 INTL 20061109)
[    0.291482] ACPI: Interpreter enabled
[    0.291500] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20140424/hwxface-580)
[    0.291515] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20140424/hwxface-580)
[    0.291528] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S3_] (20140424/hwxface-580)
[    0.291541] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S4_] (20140424/hwxface-580)
[    0.291564] ACPI: (supports S0 S5)
[    0.291569] ACPI: Using IOAPIC for interrupt routing
[    0.291663] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.308247] [Firmware Info]: PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] not reserved in ACPI motherboard resources
[    0.308254] PCI: not using MMCONFIG
[    0.308299] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    0.316021] ACPI: Power Resource [USBC] (on)
[    0.317040] ACPI: Power Resource [WWPR] (off)
[    0.330069] ACPI: Power Resource [PLPE] (on)
[    0.344232] ACPI: Power Resource [CLK0] (on)
[    0.344391] ACPI: Power Resource [CLK1] (on)
[    0.345440] ACPI: Power Resource [P28X] (off)
[    0.345610] ACPI: Power Resource [P18X] (off)
[    0.347241] ACPI: Power Resource [P28P] (off)
[    0.347417] ACPI: Power Resource [P18P] (off)
[    0.348559] ACPI: Power Resource [P28T] (off)
[    0.348729] ACPI: Power Resource [P18T] (off)
[    0.349380] ACPI: Power Resource [P1XT] (off)
[    0.360747] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[    0.360765] acpi PNP0A08:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[    0.360993] \_SB_.PCI0:_OSC invalid UUID
[    0.360998] _OSC request data:1 1e 0 
[    0.361009] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[    0.362514] acpi PNP0A08:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[    0.363332] PCI host bridge to bus 0000:00
[    0.363342] pci_bus 0000:00: root bus resource [bus 00-ff]
[    0.363349] pci_bus 0000:00: root bus resource [io  0x0000-0x006f]
[    0.363356] pci_bus 0000:00: root bus resource [io  0x0078-0x0cf7]
[    0.363361] pci_bus 0000:00: root bus resource [io  0x0d00-0xffff]
[    0.363368] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff]
[    0.363373] pci_bus 0000:00: root bus resource [mem 0x000c0000-0x000dffff]
[    0.363379] pci_bus 0000:00: root bus resource [mem 0x000e0000-0x000fffff]
[    0.363385] pci_bus 0000:00: root bus resource [mem 0x90c00000-0x90ffffff]
[    0.363391] pci_bus 0000:00: root bus resource [mem 0x7b000001-0x7f000000]
[    0.363397] pci_bus 0000:00: root bus resource [mem 0x80000000-0x908ffffe]
[    0.363403] pci_bus 0000:00: root bus resource [mem 0xfed40000-0xfed40fff]
[    0.363421] pci 0000:00:00.0: [8086:0f00] type 00 class 0x060000
[    0.363734] pci 0000:00:02.0: [8086:0f31] type 00 class 0x030000
[    0.363757] pci 0000:00:02.0: reg 0x10: [mem 0x90000000-0x903fffff]
[    0.363774] pci 0000:00:02.0: reg 0x18: [mem 0x80000000-0x8fffffff pref]
[    0.363790] pci 0000:00:02.0: reg 0x20: [io  0x1000-0x1007]
[    0.364129] pci 0000:00:1a.0: [8086:0f18] type 00 class 0x108000
[    0.364164] pci 0000:00:1a.0: reg 0x10: [mem 0x90700000-0x907fffff]
[    0.364183] pci 0000:00:1a.0: reg 0x14: [mem 0x90600000-0x906fffff]
[    0.364305] pci 0000:00:1a.0: PME# supported from D0 D3hot
[    0.364610] pci 0000:00:1d.0: [8086:0f34] type 00 class 0x0c0320
[    0.364646] pci 0000:00:1d.0: reg 0x10: [mem 0x90811000-0x908113ff]
[    0.364782] pci 0000:00:1d.0: PME# supported from D0 D3hot D3cold
[    0.365079] pci 0000:00:1f.0: [8086:0f1c] type 00 class 0x060100
[    0.366824] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.367165] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.367514] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.367851] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.368195] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.368534] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.368873] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.369211] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 10 11 12 14 15) *0, disabled.
[    0.386921] vgaarb: setting as boot device: PCI:0000:00:02.0
[    0.386929] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.386934] vgaarb: loaded
[    0.386938] vgaarb: bridge control possible 0000:00:02.0
[    0.387214] SCSI subsystem initialized
[    0.387358] libata version 3.00 loaded.
[    0.387609] PCI: Using ACPI for IRQ routing
[    0.387616] PCI: pci_cache_line_size set to 64 bytes
[    0.387643] Expanded resource reserved due to conflict with PCI Bus 0000:00
[    0.387650] e820: reserve RAM buffer [mem 0x0008f000-0x0008ffff]
[    0.387656] e820: reserve RAM buffer [mem 0x0009e000-0x0009ffff]
[    0.387661] e820: reserve RAM buffer [mem 0x79f09000-0x7bffffff]
[    0.387666] e820: reserve RAM buffer [mem 0x7a1ea000-0x7bffffff]
[    0.387671] e820: reserve RAM buffer [mem 0x7ad00000-0x7bffffff]
[    0.387992] NetLabel: Initializing
[    0.387997] NetLabel:  domain hash size = 128
[    0.388000] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.388035] NetLabel:  unlabeled traffic allowed by default
[    0.388171] Switched to clocksource refined-jiffies
[    0.404498] AppArmor: AppArmor Filesystem Enabled
[    0.404585] pnp: PnP ACPI init
[    0.404633] ACPI: bus type PNP registered
[    0.404775] pnp 00:00: Plug and Play ACPI device, IDs PNP0b00 (active)
[    0.405145] system 00:01: [io  0x0680-0x069f] has been reserved
[    0.405154] system 00:01: [io  0x0400-0x047f] has been reserved
[    0.405161] system 00:01: [io  0x0500-0x05fe] has been reserved
[    0.405168] system 00:01: [io  0x0600-0x061f] has been reserved
[    0.405175] system 00:01: [io  0x164e-0x164f] has been reserved
[    0.405184] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.412200] pnp 00:02: unknown resource type 17 in _CRS
[    0.412208] pnp 00:02: can't evaluate _CRS: 1
[    0.412301] pnp 00:02: Plug and Play ACPI device, IDs INTcfd9 PNP0c40 (active)
[    0.412441] pnp: PnP ACPI: found 3 devices
[    0.412446] ACPI: bus type PNP unregistered
[    0.423594] Switched to clocksource acpi_pm
[    0.423618] pci_bus 0000:00: resource 4 [io  0x0000-0x006f]
[    0.423625] pci_bus 0000:00: resource 5 [io  0x0078-0x0cf7]
[    0.423631] pci_bus 0000:00: resource 6 [io  0x0d00-0xffff]
[    0.423637] pci_bus 0000:00: resource 7 [mem 0x000a0000-0x000bffff]
[    0.423642] pci_bus 0000:00: resource 8 [mem 0x000c0000-0x000dffff]
[    0.423648] pci_bus 0000:00: resource 9 [mem 0x000e0000-0x000fffff]
[    0.423654] pci_bus 0000:00: resource 10 [mem 0x90c00000-0x90ffffff]
[    0.423660] pci_bus 0000:00: resource 11 [mem 0x7b000001-0x7f000000]
[    0.423665] pci_bus 0000:00: resource 12 [mem 0x80000000-0x908ffffe]
[    0.423671] pci_bus 0000:00: resource 13 [mem 0xfed40000-0xfed40fff]
[    0.423856] NET: Registered protocol family 2
[    0.424484] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.424599] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
[    0.424718] TCP: Hash tables configured (established 16384 bind 16384)
[    0.424774] TCP: reno registered
[    0.424788] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[    0.424822] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[    0.425024] NET: Registered protocol family 1
[    0.425063] pci 0000:00:02.0: Video device with shadowed ROM
[    0.425525] PCI: CLS 0 bytes, default 64
[    0.425721] Unpacking initramfs...
[    2.487523] Freeing initrd memory: 8548K (ffff88003f7a2000 - ffff88003fffb000)
[    2.488182] microcode: CPU0 sig=0x30678, pf=0x2, revision=0x832
[    2.488204] microcode: CPU1 sig=0x30678, pf=0x2, revision=0x832
[    2.488220] microcode: CPU2 sig=0x30678, pf=0x2, revision=0x832
[    2.488241] microcode: CPU3 sig=0x30678, pf=0x2, revision=0x832
[    2.488420] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
[    2.488496] Scanning for low memory corruption every 60 seconds
[    2.489340] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    2.489438] audit: initializing netlink subsys (disabled)
[    2.489485] audit: type=2000 audit(1456184483.479:1): initialized
[    2.490194] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    2.490337] zbud: loaded
[    2.490899] VFS: Disk quotas dquot_6.5.2
[    2.490951] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    2.491564] msgmni has been set to 3829
[    2.491676] Key type big_key registered
[    2.492634] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[    2.492785] io scheduler noop registered
[    2.492795] io scheduler deadline registered
[    2.492917] io scheduler cfq registered (default)
[    2.493142] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    2.493194] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    2.493353] efifb: probing for efifb
[    2.493411] efifb: framebuffer at 0x80000000, mapped to 0xffffc90000480000, using 8100k, total 8100k
[    2.493416] efifb: mode is 1920x1080x32, linelength=7680, pages=1
[    2.493419] efifb: scrolling: redraw
[    2.493424] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[    2.513955] Console: switching to colour frame buffer device 240x67
[    2.534201] fb0: EFI VGA frame buffer device
[    2.534230] intel_idle: MWAIT substates: 0x33000020
[    2.534235] intel_idle: v0.4 model 0x37
[    2.534238] intel_idle: lapic_timer_reliable_states 0xffffffff
[    2.534993] GHES: HEST is not enabled!
[    2.535151] Serial: 8250/16550 driver, 32 ports, IRQ sharing disabled
[    2.555343] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[    2.561330] hpet: number irqs doesn't agree with number of timers
[    2.561534] Non-volatile memory driver v1.3
[    2.561545] Linux agpgart interface v0.103
[    2.561973] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    3.597273] i8042: No controller found
[    3.597422] tsc: Refined TSC clocksource calibration: 1333.333 MHz
[    3.597697] mousedev: PS/2 mouse device common for all mice
[    3.598471] rtc_cmos 00:00: rtc core: registered rtc_cmos as rtc0
[    3.598512] rtc_cmos 00:00: alarms up to one month, y3k, 242 bytes nvram
[    3.598541] Intel P-state driver initializing.
[    3.598574] Intel pstate controlling: cpu 0
[    3.598701] Intel pstate controlling: cpu 1
[    3.598809] Intel pstate controlling: cpu 2
[    3.598912] Intel pstate controlling: cpu 3
[    3.599134] ledtrig-cpu: registered to indicate activity on CPUs
[    3.599160] EFI Variables Facility v0.08 2004-May-17
[    3.608415] hidraw: raw HID events driver (C) Jiri Kosina
[    3.608685] TCP: cubic registered
[    3.609489] NET: Registered protocol family 10
[    3.612728] registered taskstats version 1
[    3.612835] AppArmor: AppArmor sha1 policy hashing enabled
[    3.613476]   Magic number: 4:203:707
[    3.613808] rtc_cmos 00:00: setting system clock to 2016-02-22 23:41:25 UTC (1456184485)
[    3.614199] PM: Checking hibernation image partition /dev/disk/by-uuid/0b44ddb4-82e5-4aeb-b21f-08708266165f
[    3.614207] PM: Hibernation image not present or could not be loaded.
[    3.617392] Freeing unused kernel memory: 1556K (ffffffff81cf3000 - ffffffff81e78000)
[    3.617399] Write protecting the kernel read-only data: 12288k
[    3.618933] Freeing unused kernel memory: 152K (ffff8800015da000 - ffff880001600000)
[    3.627085] Freeing unused kernel memory: 1596K (ffff880001a71000 - ffff880001c00000)
[    3.633952] random: systemd urandom read with 1 bits of entropy available
[    4.113856] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[    4.114049] ACPI: Power Button [PWRF]
[    4.118483] sdhci: Secure Digital Host Controller Interface driver
[    4.118489] sdhci: Copyright(c) Pierre Ossman
[    4.120187] mmc0: no vqmmc regulator found
[    4.120193] mmc0: no vmmc regulator found
[    4.121680] mmc0: SDHCI controller on ACPI [80860F14:00] using ADMA
[    4.122973] mmc1: no vqmmc regulator found
[    4.122978] mmc1: no vmmc regulator found
[    4.124838] mmc1: SDHCI controller on ACPI [INT33BB:00] using ADMA
[    4.126631] mmc2: no vqmmc regulator found
[    4.126639] mmc2: no vmmc regulator found
[    4.135650] mmc2: SDHCI controller on ACPI [80860F14:02] using ADMA
[    4.164145] ACPI: bus type USB registered
[    4.164152] [drm] Initialized drm 1.1.0 20060810
[    4.164213] usbcore: registered new interface driver usbfs
[    4.164240] usbcore: registered new interface driver hub
[    4.175034] usbcore: registered new device driver usb
[    4.177517] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    4.177919] ehci-pci: EHCI PCI platform driver
[    4.178180] ehci-pci 0000:00:1d.0: EHCI Host Controller
[    4.178198] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 1
[    4.178220] ehci-pci 0000:00:1d.0: debug port 2
[    4.183133] ehci-pci 0000:00:1d.0: cache line size of 64 is not supported
[    4.183173] ehci-pci 0000:00:1d.0: irq 23, io mem 0x90811000
[    4.193238] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[    4.193419] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    4.193425] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    4.193429] usb usb1: Product: EHCI Host Controller
[    4.193434] usb usb1: Manufacturer: Linux 3.16.7-32-default ehci_hcd
[    4.193438] usb usb1: SerialNumber: 0000:00:1d.0
[    4.194572] hub 1-0:1.0: USB hub found
[    4.194602] hub 1-0:1.0: 8 ports detected
[    4.198918] [drm] Memory usable by graphics device = 2048M
[    4.198929] checking generic (80000000 7e9000) vs hw (80000000 10000000)
[    4.198933] fb: switching to inteldrmfb from EFI VGA
[    4.198990] Console: switching to colour dummy device 80x25
[    4.199142] [drm] Replacing VGA console driver
[    4.215739] i915 0000:00:02.0: irq 107 for MSI/MSI-X
[    4.215769] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    4.215773] [drm] Driver supports precise vblank timestamp query.
[    4.296861] mmc0: BKOPS_EN bit is not set
[    4.337789] mmc0: new HS200 MMC card at address 0001
[    4.340139] mmcblk0: mmc0:0001 S10032 28.5 GiB 
[    4.340455] mmcblk0boot0: mmc0:0001 S10032 partition 1 4.00 MiB
[    4.340571] mmcblk0boot1: mmc0:0001 S10032 partition 2 4.00 MiB
[    4.341095] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    4.342210] mmcblk0rpmb: mmc0:0001 S10032 partition 3 4.00 MiB
[    4.347786]  mmcblk0: p1 p2 p3 p4
[    4.352913]  mmcblk0boot1: unknown partition table
[    4.355399]  mmcblk0boot0: unknown partition table
[    4.409061] mmc1: new high speed SDIO card at address 0001
[    4.492968] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit banging on pin 2
[    4.504979] usb 1-1: new high-speed USB device number 2 using ehci-pci
[    4.521959] mmc2: new high speed SDHC card at address 0001
[    4.522385] mmcblk1: mmc2:0001 MS 7.38 GiB 
[    4.523808]  mmcblk1: p1
[    4.597348] Switched to clocksource tsc
[    4.637490] usb 1-1: New USB device found, idVendor=8087, idProduct=07e6
[    4.637513] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.638566] hub 1-1:1.0: USB hub found
[    4.638723] hub 1-1:1.0: 4 ports detected
[    4.913620] usb 1-1.1: new high-speed USB device number 3 using ehci-pci
[    4.925613] [drm] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
[    4.930957] fbcon: inteldrmfb (fb0) is primary device
[    5.006867] usb 1-1.1: New USB device found, idVendor=0409, idProduct=005a
[    5.006878] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    5.008129] hub 1-1.1:1.0: USB hub found
[    5.008451] hub 1-1.1:1.0: 4 ports detected
[    5.250183] Console: switching to colour frame buffer device 240x67
[    5.298029] usb 1-1.1.1: new high-speed USB device number 4 using ehci-pci
[    5.299463] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    5.299473] i915 0000:00:02.0: registered panic notifier
[    5.308887] ACPI Exception: AE_NOT_FOUND, Evaluating _DOD (20140424/video-1385)
[    5.311195] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    5.320437] acpi device:09: registered as cooling_device0
[    5.320796] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input1
[    5.321698] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[    5.399804] PM: Marking nosave pages: [mem 0x0008f000-0x0008ffff]
[    5.399823] PM: Marking nosave pages: [mem 0x0009e000-0x000fffff]
[    5.399843] PM: Marking nosave pages: [mem 0x20000000-0x201fffff]
[    5.399894] PM: Marking nosave pages: [mem 0x79f09000-0x7a1defff]
[    5.399961] PM: Marking nosave pages: [mem 0x7a1ea000-0x7a1eafff]
[    5.399970] PM: Basic memory bitmaps created
[    5.411465] usb 1-1.1.1: New USB device found, idVendor=0409, idProduct=005a
[    5.411486] usb 1-1.1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    5.412428] hub 1-1.1.1:1.0: USB hub found
[    5.412637] hub 1-1.1.1:1.0: 4 ports detected
[    5.476874] PM: Basic memory bitmaps freed
[    5.476926] video LNXVIDEO:00: Restoring backlight state
[    5.490705] PM: Starting manual resume from disk
[    5.490716] PM: Hibernation image partition 179:3 present
[    5.490720] PM: Looking for hibernation image.
[    5.491195] PM: Image not found (code -22)
[    5.491199] PM: Hibernation image not present or could not be loaded.
[    5.502264] usb 1-1.1.2: new low-speed USB device number 5 using ehci-pci
[    5.597233] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
[    5.600765] XFS (mmcblk0p4): Mounting V5 Filesystem
[    5.629526] usb 1-1.1.2: New USB device found, idVendor=04d9, idProduct=1603
[    5.629548] usb 1-1.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    5.629563] usb 1-1.1.2: Product: USB Keyboard
[    5.629576] usb 1-1.1.2: Manufacturer:  
[    5.663073] usbcore: registered new interface driver usbhid
[    5.663089] usbhid: USB HID core driver
[    5.666625] input:   USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0/0003:04D9:1603.0001/input/input2
[    5.667336] hid-generic 0003:04D9:1603.0001: input,hidraw0: USB HID v1.10 Keyboard [  USB Keyboard] on usb-0000:00:1d.0-1.1.2/input0
[    5.670488] input:   USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.1/0003:04D9:1603.0002/input/input3
[    5.671110] hid-generic 0003:04D9:1603.0002: input,hidraw1: USB HID v1.10 Device [  USB Keyboard] on usb-0000:00:1d.0-1.1.2/input1
[    5.718519] usb 1-1.1.4: new high-speed USB device number 6 using ehci-pci
[    5.826931] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[    5.828184] usb 1-1.1.4: New USB device found, idVendor=0409, idProduct=005a
[    5.828205] usb 1-1.1.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    5.829507] hub 1-1.1.4:1.0: USB hub found
[    5.829771] hub 1-1.1.4:1.0: 4 ports detected
[    5.918896] usb 1-1.1.1.1: new high-speed USB device number 7 using ehci-pci
[    6.030644] usb 1-1.1.1.1: New USB device found, idVendor=03f0, idProduct=da07
[    6.030665] usb 1-1.1.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    6.030679] usb 1-1.1.1.1: Product: x702w
[    6.030692] usb 1-1.1.1.1: Manufacturer: HP
[    6.030704] usb 1-1.1.1.1: SerialNumber: 3966793238
[    6.031621] random: nonblocking pool is initialized
[    6.041745] usb-storage 1-1.1.1.1:1.0: USB Mass Storage device detected
[    6.042497] scsi0 : usb-storage 1-1.1.1.1:1.0
[    6.043179] usbcore: registered new interface driver usb-storage
[    6.045255] usbcore: registered new interface driver uas
[    6.119187] usb 1-1.1.1.4: new low-speed USB device number 8 using ehci-pci
[    6.232152] usb 1-1.1.1.4: New USB device found, idVendor=413c, idProduct=3012
[    6.232173] usb 1-1.1.1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    6.232188] usb 1-1.1.1.4: Product: Dell USB Optical Mouse
[    6.232201] usb 1-1.1.1.4: Manufacturer: Dell
[    6.237001] input: Dell Dell USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.1/1-1.1.1/1-1.1.1.4/1-1.1.1.4:1.0/0003:413C:3012.0003/input/input4
[    6.238707] hid-generic 0003:413C:3012.0003: input,hidraw2: USB HID v1.11 Mouse [Dell Dell USB Optical Mouse] on usb-0000:00:1d.0-1.1.1.4/input0
[    6.375782] XFS (mmcblk0p4): Ending clean mount
[    7.046467] scsi 0:0:0:0: Direct-Access     hp       x702w            1.00 PQ: 0 ANSI: 6
[    7.047825] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    7.050141] sd 0:0:0:0: [sda] 499998720 512-byte logical blocks: (255 GB/238 GiB)
[    7.051222] sd 0:0:0:0: [sda] Write Protect is off
[    7.051232] sd 0:0:0:0: [sda] Mode Sense: 23 00 00 00
[    7.054443] sd 0:0:0:0: [sda] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
[    7.065515]  sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
[    7.068540] sd 0:0:0:0: [sda] Attached SCSI removable disk
[    7.423296] device-mapper: uevent: version 1.0.3
[    7.423677] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: dm-devel@redhat.com
[    7.524423] systemd-gpt-auto-generator[330]: Failed to verify GPT partition /dev/mmcblk0rpmb: Input/output error
[    7.967161] 80860F0A:00: ttyS4 at MMIO 0x90947000 (irq = 39, base_baud = 2764800) is a 16550A
[    7.967604] 80860F0A:01: ttyS5 at MMIO 0x9094d000 (irq = 40, base_baud = 2764800) is a 16550A
[    7.973164] sst-acpi 80860F28:00: No matching ASoC machine driver found
[    8.046507] [Firmware Bug]: No valid trip found
[    8.050161] mei_txe 0000:00:1a.0: can't derive routing for PCI INT A
[    8.050163] mei_txe 0000:00:1a.0: PCI INT A: no GSI
[    8.050251] mei_txe 0000:00:1a.0: irq 108 for MSI/MSI-X
[    8.090130] input: PC Speaker as /devices/platform/pcspkr/input/input5
[    8.127130] SSE version of gcm_enc/dec engaged.
[    8.222062] had: ******** HAD DRIVER loading.. Ver: 0.01.003
[    8.223441] [drm] mid_hdmi_audio_register: Scheduling HDMI audio work queue
[    8.223873] [drm:i915_had_wq] *ERROR* Checking for HDMI connection at boot
[    8.243949] iTCO_vendor_support: vendor-support=0
[    8.244343] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[    8.244424] iTCO_wdt: Found a Bay Trail SoC TCO device (Version=3, TCOBASE=0x0460)
[    8.252591] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[    8.308007] intel_soc_dts_thermal: request_threaded_irq ret -22
[    8.352058] intel_soc_dts_thermal: request_threaded_irq ret -22
[    8.426336] Adding 2112508k swap on /dev/mmcblk0p3.  Priority:-1 extents:1 across:2112508k SSFS
[    8.486524] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[   10.271320] audit: type=1305 audit(1456184492.142:2): audit_pid=1160 old=0 auid=4294967295 ses=4294967295 res=1
[   11.167936] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   11.187730] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[   11.193374] ip_tables: (C) 2000-2006 Netfilter Core Team
[   11.501305] No iBFT detected.
[   77.835556] Bluetooth: Core ver 2.19
[   77.835594] NET: Registered protocol family 31
[   77.835598] Bluetooth: HCI device and connection manager initialized
[   77.835612] Bluetooth: HCI socket layer initialized
[   77.835618] Bluetooth: L2CAP socket layer initialized
[   77.835644] Bluetooth: SCO socket layer initialized
[   77.848176] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   77.848194] Bluetooth: BNEP filters: protocol multicast
[   77.848226] Bluetooth: BNEP socket layer initialized
[   82.801731] fuse init (API version 7.23)
[  214.047085] XFS (sda1): Mounting V4 Filesystem
[  214.207260] XFS (sda1): Ending clean mount

[-- Attachment #3: Type: text/plain, Size: 0 bytes --]

Re: Compute Stick baytrail audio problem

[Giacomo Comes]

On Tue, Feb 23, 2016 at 12:32:23PM +0900, Toyo Abe wrote:
> 
> Hi,
> 
> I'd struggled a similar underrun problem on my baytrail device. The dmesg showed
> the following warnings.
> 
> [15356.757938] had: Driver detected 2 missed buffer done interrupt(s)!!!!
> [15356.761594] had: Driver detected 1 missed buffer done interrupt(s)!!!!
> [15356.774775] had: Unable to clear UNDERRUN bits
> [15356.791312] had: Driver detected 1 missed buffer done interrupt(s)!!!!
> [15356.808148] had: Unable to clear UNDERRUN bits
> [15356.824692] had: Driver detected 2 missed buffer done interrupt(s)!!!!
> 
> After some investigation, I found some problems on the driver and fixed a few of
> them. I pushed the fix to my github. I hope it might help you.
>   https://raw.githubusercontent.com/toyoabe/baytrailaudio/fix-underrun/hdmi_audio_20150319.patch
> 
> Best Regards,
> -toyo

Hi,
that was it!. I added your changes and now the audio works. I'm happy. 
I got finally every subsystem of the Compute Stick working.
I have a minor question tought. Alsamixer says:
  This sound device does not have any controls.
Is there a way to change the volume without enabling pulseaudio?

Just for documentation, here is the small change that Toyo did to make the 
underrun disappear:

diff -Nraub a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
--- a/drivers/gpu/drm/i915/i915_irq.c	2016-02-23 08:03:42.406016576 -0400
+++ b/drivers/gpu/drm/i915/i915_irq.c	2016-02-23 08:03:58.714016576 -0400
@@ -2717,11 +2717,14 @@
 	int pipe = 1;
 
 	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+	i915_enable_lpe_pipestat(dev_priv, pipe);
+
 	imr = I915_READ(VLV_IMR);
 	/* Audio is on Stream A */
 	imr &= ~I915_LPE_PIPE_A_INTERRUPT;
 	I915_WRITE(VLV_IMR, imr);
-	i915_enable_lpe_pipestat(dev_priv, pipe);
+	I915_WRITE(VLV_IER, ~imr);
+	POSTING_READ(VLV_IER);
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 
 	return 0;
@@ -2769,7 +2772,10 @@
 	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
 	imr = I915_READ(VLV_IMR);
 	imr |= I915_LPE_PIPE_A_INTERRUPT;
+	I915_WRITE(VLV_IER, ~imr);
 	I915_WRITE(VLV_IMR, imr);
+	POSTING_READ(VLV_IMR);
+
 	i915_disable_lpe_pipestat(dev_priv, pipe);
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 
diff -Nraub a/sound/hdmi_audio/intel_mid_hdmi_audio.c b/sound/hdmi_audio/intel_mid_hdmi_audio.c
--- a/sound/hdmi_audio/intel_mid_hdmi_audio.c	2016-02-23 08:03:42.414016576 -0400
+++ b/sound/hdmi_audio/intel_mid_hdmi_audio.c	2016-02-23 08:03:58.722016576 -0400
@@ -1128,7 +1128,6 @@
 		pr_debug("HDMI status =0x%x\n", hdmi_status);
 		if (hdmi_status & AUD_CONFIG_MASK_UNDERRUN) {
 			i++;
-			hdmi_status &= ~AUD_CONFIG_MASK_UNDERRUN;
 			had_write_register(AUD_HDMI_STATUS_v2, hdmi_status);
 		} else
 			break;

Thanks again.
Giacomo

> 
> Pierre-Louis Bossart wrote:
> > On 02/19/2016 02:39 PM, Giacomo Comes wrote:
> >> Hi,
> >> I have recently bought a Intel Compute Stick and I am having trouble with=
> >   the audio.
> >> Intel provides a custom Ubuntu release that support audio, but I want to =
> > run the
> >> linux distribution of my choice on it (openSUSE 13.2 for the moment).
> >>
> >> In order to have HDMI audio support it is necessary to compile a kernel w=
> > ith this patch
> >> (https://raw.githubusercontent.com/01org/baytrailaudio/master/hdmi_audio_=
> > 20150319.patch)
> >> provided by Intel for kernel 3.16.7 (https://01.org/ubuntu-hdmi)
> >>
> >> I compiled the openSUSE kernel using the default openSUSE .config plus th=
> > e following:
> >> CONFIG_SUPPORT_HDMI=3Dy
> >> CONFIG_SND_SOC=3Dm
> >> CONFIG_SND_SOC_INTEL_SST=3Dm
> >> CONFIG_SND_SOC_INTEL_BYT_RT5640_MACH=3Dm
> >>
> >> I booted the new kernel and aplay -l gives this output:
> >> **** List of PLAYBACK Hardware Devices ****
> >> card 0: IntelHDMI [IntelHDMI], device 0: IntelHDMI [IntelHDMI]
> >>    Subdevices: 0/1
> >>    Subdevice #0: subdevice #0
> >>
> >> but when I run:
> >>    aplay /usr/share/sounds/alsa/test.wav
> >> the audio plays for .2 seconds and then nothing more.
> >> Sometime it will play later a little bit more and stop again.
> >> At some point these messages appears:
> >> underrun!!! (at least 29325.946 ms long)
> >> underrun!!! (at least 1535.889 ms long)
> >> underrun!!! (at least 3196.213 ms long)
> >>
> >>
> >> I have looked around on google for a hint on how to fix this issue but I =
> > found nothing.
> >> Any idea where to look for a solution?
> >>
> >> Attached there are the dmesg and lsmod output for ubuntu
> >> with the working audio and openSUSE 13.2 plus patch
> >> without the working audio.
> >> I can provide any other information you need.
> > 
> > There are enough messages that make me believe something is very wrong
> > from the start
> > 
> > 19.664486] had: ******** HAD DRIVER loading.. Ver: 0.01.003
> > [   19.664549] hdmi_audio_probe dma_mask: 0
> > [   19.664937] card->dev is NULL!!!!! Should not be this case
> > [   19.668176] [drm] mid_hdmi_audio_register: Scheduling HDMI audio work qu=
> > eue
> > [   19.670745] [drm:i915_had_wq] *ERROR* Checking for HDMI connection at bo=
> > ot
> > 
> > Some of us at Intel are trying to clean this up but it'll take time.
> > 
> > 
> > _______________________________________________
> > Alsa-devel mailing list
> > Alsa-devel@alsa-project.org
> > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> > 

Re: Compute Stick baytrail audio problem

[Toyo Abe]

2016-02-23 23:34 GMT+09:00 Giacomo Comes <comes@naic.edu>:
> On Tue, Feb 23, 2016 at 12:32:23PM +0900, Toyo Abe wrote:
>>
>> Hi,
>>
>> I'd struggled a similar underrun problem on my baytrail device. The dmesg showed
>> the following warnings.
>>
>> [15356.757938] had: Driver detected 2 missed buffer done interrupt(s)!!!!
>> [15356.761594] had: Driver detected 1 missed buffer done interrupt(s)!!!!
>> [15356.774775] had: Unable to clear UNDERRUN bits
>> [15356.791312] had: Driver detected 1 missed buffer done interrupt(s)!!!!
>> [15356.808148] had: Unable to clear UNDERRUN bits
>> [15356.824692] had: Driver detected 2 missed buffer done interrupt(s)!!!!
>>
>> After some investigation, I found some problems on the driver and fixed a few of
>> them. I pushed the fix to my github. I hope it might help you.
>>   https://raw.githubusercontent.com/toyoabe/baytrailaudio/fix-underrun/hdmi_audio_20150319.patch
>>
>> Best Regards,
>> -toyo
>
> Hi,
> that was it!. I added your changes and now the audio works. I'm happy.
> I got finally every subsystem of the Compute Stick working.

Congratulations.

> I have a minor question tought. Alsamixer says:
>   This sound device does not have any controls.
> Is there a way to change the volume without enabling pulseaudio?
>

You could use softvol for that purpose.
　http://alsa.opensrc.org/Softvol

Regards,
-toyo
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Re: Compute Stick baytrail audio problem

[Pierre-Louis Bossart]

>> After some investigation, I found some problems on the driver and fixed a few of
>> them. I pushed the fix to my github. I hope it might help you.
>>    https://raw.githubusercontent.com/toyoabe/baytrailaudio/fix-underrun/hdmi_audio_20150319.patch
>>
>> Best Regards,
>> -toyo
>
> Hi,
> that was it!. I added your changes and now the audio works. I'm happy.
> I got finally every subsystem of the Compute Stick working.

If anyone is interested, I ported the code to v4.4, it seems to work on 
the Baytrail Compute stick w/ Ubuntu.

https://github.com/plbossart/sound/commits/baytrail-stick-rebase-4.4

Testers welcome, next steps are to add the CherryTrail parts, rebase to 
the drm-nightly-build branch and start talking upstream changes.

Re: Compute Stick baytrail audio problem

[Giacomo Comes]

On Wed, Mar 02, 2016 at 11:25:25AM -0600, Pierre-Louis Bossart wrote:
> 
> >>After some investigation, I found some problems on the driver and fixed a few of
> >>them. I pushed the fix to my github. I hope it might help you.
> >>   https://raw.githubusercontent.com/toyoabe/baytrailaudio/fix-underrun/hdmi_audio_20150319.patch
> >>
> >>Best Regards,
> >>-toyo
> >
> >Hi,
> >that was it!. I added your changes and now the audio works. I'm happy.
> >I got finally every subsystem of the Compute Stick working.
> 
> If anyone is interested, I ported the code to v4.4, it seems to work
> on the Baytrail Compute stick w/ Ubuntu.
> 
> https://github.com/plbossart/sound/commits/baytrail-stick-rebase-4.4
> 
> Testers welcome, next steps are to add the CherryTrail parts, rebase
> to the drm-nightly-build branch and start talking upstream changes.

I tested your rebased code and it works for me. Actually I haven't
used a 4.4 kernel but a 4.1 (openSUSE 42.1). I made a diff between 
kernel 4.4 and your branch and then applied that diff (with very minor changes)
to the 4.1 openSUSE kernel. No sound issue so far.

Giacomo

Re: Compute Stick baytrail audio problem

[Pierre-Louis Bossart]

On 3/2/16 10:09 PM, Giacomo Comes wrote:
> On Wed, Mar 02, 2016 at 11:25:25AM -0600, Pierre-Louis Bossart wrote:
>>
>>>> After some investigation, I found some problems on the driver and fixed a few of
>>>> them. I pushed the fix to my github. I hope it might help you.
>>>>    https://raw.githubusercontent.com/toyoabe/baytrailaudio/fix-underrun/hdmi_audio_20150319.patch
>>>>
>>>> Best Regards,
>>>> -toyo
>>>
>>> Hi,
>>> that was it!. I added your changes and now the audio works. I'm happy.
>>> I got finally every subsystem of the Compute Stick working.
>>
>> If anyone is interested, I ported the code to v4.4, it seems to work
>> on the Baytrail Compute stick w/ Ubuntu.
>>
>> https://github.com/plbossart/sound/commits/baytrail-stick-rebase-4.4
>>
>> Testers welcome, next steps are to add the CherryTrail parts, rebase
>> to the drm-nightly-build branch and start talking upstream changes.
>
> I tested your rebased code and it works for me. Actually I haven't
> used a 4.4 kernel but a 4.1 (openSUSE 42.1). I made a diff between
> kernel 4.4 and your branch and then applied that diff (with very minor changes)
> to the 4.1 openSUSE kernel. No sound issue so far.

Thanks for testing.
There are significant changes needed to apply the initial driver on 3.18 
and 4.0, but the changes are minor after that and largely cosmetic.