[Bug 46713] New: HDMI audio played back at a wrong rate

[Bug 46713] New: HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

             Bug #: 46713
           Summary: HDMI audio played back at a wrong rate
    Classification: Unclassified
           Product: DRI
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: tvrtko.ursulin@onelan.co.uk


I am experiencing audio being played back at roughly 28665Hz instead of
expected 44100Hz. This rate is derived for timing for how long it takes to play
sample of a known size. Pitch of audio being played is obviously comical.

Hardware:
AMD G-T56N (Radeon HD 6310) box connected to the monitor via native HDMI
connector.

This is with kernel.org 3.3.0-rc4 kernel.

Only thing I see in kernel log with apparent relevance is this:
[   56.086500] HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.086526] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.086545] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   56.086561] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   56.127063] HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
[   56.127090] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.127109] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   56.127125] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   56.387045] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.387069] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   56.387086] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   56.699469] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.699494] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   56.699510] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   56.990752] HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.990777] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   56.990795] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   56.990811] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.001054] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.001079] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.001095] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.302064] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.302092] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.302108] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.420102] HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
[   57.420130] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.420149] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.420165] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.437447] HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.437471] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.437489] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.437505] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.493091] HDMI hot plug event: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=1
[   57.493117] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.493136] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.493152] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.618528] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.618552] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.618568] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   57.919028] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   57.919059] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   57.919075] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   58.220081] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   58.220115] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   58.220131] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   58.521039] HDMI status: Codec=0 Pin=3 Presence_Detect=1 ELD_Valid=1
[   58.521071] ALSA sound/pci/hda/hda_eld.c:337 HDMI: ELD buf size is 0, force
128
[   58.521087] ALSA sound/pci/hda/hda_eld.c:356 HDMI: invalid ELD data byte 0
[   63.136948] hda-intel: IRQ timing workaround is activated for card #0.
Suggest a bigger bdl_pos_adj.

While playing back hw_info looks fine:

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: SB [HDA ATI SB], device 0: ALC883 Analog [ALC883 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: SB [HDA ATI SB], device 1: ALC883 Digital [ALC883 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

cat /proc/asound/card0/pcm3p/sub0/hw_params 
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 5504
buffer_size: 22016


Not sure what other info should I provide?

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #1 from Rafał Miłecki <zajec5@gmail.com> 2012-02-28 03:41:41 PST ---
Hi Tvrtko,

Can you install rateontool (avivotool) from git master, and provide output from
it?

Installation:
git clone git://people.freedesktop.org/~airlied/radeontool
cd radeontool
./autogen.sh && make && sudo make install

Grabbing regs dump:
[start playing your audio over HDMI]
avivotool regs hdmi

You can easily save output to the file by using
avivotool regs hdmi > dump.txt

Please provide requested dump.

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #2 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-02-28 04:16:05 PST ---
Created attachment 57759
  --> https://bugs.freedesktop.org/attachment.cgi?id=57759
"avivotool regs hdmi" output while audio was playing

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

Tom Gundersen <teg@jklm.no> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |teg@jklm.no

--- Comment #3 from Tom Gundersen <teg@jklm.no> 2012-02-28 05:30:28 PST ---
I have experienced a possibly similar issue, I could only reproduce it in the
following scenario, so maybe this can be another data point:

A DVI output and a HDMI output are connected to the same graphics card. If
their resolutions are different the pitch is wrong (the more different the
resolutions the more wrong it is). However, if I unplug the DVI before booting
the machine, or set the HDMI to the same resolution as the DVI the audio is
fine.

I don't have the setup at the moment to verify that we are seeing the same bug,
in which case I apologise for the noise.

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #4 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-02-28 05:33:12 PST ---
It's not that in my case since the motherboard I am using doesn't even have
DVI. It has VGA and HDMI, with only HDMI connected.

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #5 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-02-28 08:00:21 PST ---
Monitor is Dell 2408WFP in case it matters.

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #6 from Rafał Miłecki <zajec5@gmail.com> 2012-03-08 02:10:48 PST ---
00007d04    02000000 (33554432)
This register is 0x7c30 + R600_HDMI_IEC60958_1. AFAWK value 0x02000000 means
48000 rate. I've to understand how driver handles rates.

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #7 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-03-08 02:19:26 PST ---
Just to clarify, it is possible I was playing back at 48kHz when collecting the
register dump. I was trying both 44.1kHz and 48kHz, the latter just to make
sure my monitor is not mishandling the former, but in both cases heard and
observed playback rate was wrong.

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #8 from Rafał Miłecki <zajec5@gmail.com> 2012-03-08 13:27:29 UTC ---
Created attachment 58209
  --> https://bugs.freedesktop.org/attachment.cgi?id=58209
drm/radeon/kms/audio: read correct regs on Evergreen

I guess this patch can fix the issue.

My problem is that I still don't know how much Evergreen is different from
older cards. I still can't take a decision if it's worth splitting HDMI/audio
code into R600 vs. Evergreen or not...

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #9 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-03-09 01:18:51 PST ---
Created attachment 58223
  --> https://bugs.freedesktop.org/attachment.cgi?id=58223
avivotool register dump while 44100 sample was playing

Unfortunately playback rate is still wrong. I made another register dump while
I was playing a 44100Hz wave file directly to the HDMI device. This file is
2m49s long, while playing it over HDMI takes 4m20s. Which gives us the same
apparent 28665Hz playback rate as originally observed.

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--- Comment #10 from Rafał Miłecki <zajec5@gmail.com> 2012-03-09 01:27:16 PST ---
Ahh, sorry, I didn't understand your first problem description you posted in
this bug report. I though the playback speed is alright, just the sampling rate
used is incorrect.

The problem most probably lays in audio clocks. Values used by radeon seem to
be:
EVERGREEN_AUDIO_PLL1_MUL    00075300
EVERGREEN_AUDIO_PLL1_DIV    00177fa0
EVERGREEN_AUDIO_PLL1_UNK    00000071

Do you have fglrx installed? Is this possible for you to switch to the fglrx
for a moment and do similar dump (using avivotool) while playing audio with it?
To make debugging quicker: can you also dump "avivotool regsrange 0x500 0x600"
just in case fglrx uses some other registers?

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #11 from Rafał Miłecki <zajec5@gmail.com> 2012-03-09 01:29:31 PST ---
(In reply to comment #5)
> Monitor is Dell 2408WFP in case it matters.

Are you using 1900x1200 resolution? Can you try some smaller one? Does it help?

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--- Comment #12 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-03-09 01:50:36 PST ---
(In reply to comment #11)
> (In reply to comment #5)
> > Monitor is Dell 2408WFP in case it matters.
> 
> Are you using 1900x1200 resolution? Can you try some smaller one? Does it help?

It changes the error:

1920x1200: 4m20s = 1.53x too slow
1280x1024: 3m2s = 1.07x too slow
1024x768: 1m49s = 1.55x too fast
800x600: 1m7s = 2.52x too fast

Sound also comes with various distortions in each test.

Is this enough of a hint on what is going wrong or you would still like me to
test with fglrx? It may take some time to set it up since I have no experience
with it.

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--- Comment #13 from Rafał Miłecki <zajec5@gmail.com> 2012-03-09 03:04:03 PST ---
I'm afraid I can not do anything without dump from fglrx :( There are 4 clocks
related registers we are aware of, but I don't know how else we can try to
program them. There may be also some other clock registers. I'm afraid only
dump from fglrx can give us some hints and I can't get that info from my card,
since it's working pretty well.

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #14 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-03-12 04:27:51 PDT ---
Created attachment 58306
  --> https://bugs.freedesktop.org/attachment.cgi?id=58306
avivotool register dump under fglrx

I've managed to get fglrx running and initially playback speed was fine but
audio quite distorted (hard to describe). I've noticed in the output a mention
of 1024x768 output resolution on the LVDS connector which was unexpected, since
the motherboard in question only has HDMI and VGA outputs. I disabled LVDS with
xranrd and then audio was perfect. I will attach that register dump as well.

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #15 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-03-12 04:28:27 PDT ---
Created attachment 58307
  --> https://bugs.freedesktop.org/attachment.cgi?id=58307
avivotool register dump under fglrx with non-existant LVDS output turned off

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--- Comment #16 from Rafał Miłecki <zajec5@gmail.com> 2012-03-13 12:04:19 PDT ---
Tvrtko: thanks a lot for your effort and dumps coming from fglrx.

What I can say now: it seems fglrx is using the same registers
(EVERGREEN_AUDIO_PLL1_MUL and EVERGREEN_AUDIO_PLL1_DIV) for your card.

However:
1) radeon uses 480'000 for MUL
2) fglrx uses 960'000 for MUL

On the other hand fglrx uses 0x72 instead of 0x71 for EVERGREEN_AUDIO_PLL1_UNK.
Maybe that 0x2 is some DIV? Maybe it tells GPU to take 960'000 and divide it by
2?

I've to investigate meaning of the register, but you gave me a track to follow,
thanks a lot for your effors! I'll take a look on that after my vacations (next
week).

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--- Comment #17 from Rafał Miłecki <zajec5@gmail.com> 2012-03-13 12:05:38 PDT ---
If you wish, you can try switching to radeon and:
1) Start playback
2) Make sure speed is still wrong
3) Execute: "avivotool regset 0x05b0 0x000ea600"
4) Execute: "avivotool regset 0x05bc 0x00000072"

Does it help?

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Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |deathsimple@vodafone.de

--- Comment #18 from Christian König <deathsimple@vodafone.de> 2012-03-14 08:09:27 PDT ---
Ok, I will try to get you the documentation for the PLL regs, they are not DRM
or IP related. So there is a slightly chance that we can release them.

Christian.

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Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |NEW

--- Comment #19 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-03-20 08:57:42 PDT ---
(In reply to comment #17)
> If you wish, you can try switching to radeon and:
> 1) Start playback
> 2) Make sure speed is still wrong
> 3) Execute: "avivotool regset 0x05b0 0x000ea600"
> 4) Execute: "avivotool regset 0x05bc 0x00000072"
> 
> Does it help?

Unfortunately not. First line speeds it up (way to much) and the second one
brings it down into too slow territory again.

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--- Comment #20 from Vincenzov <vincenzov72@hotmail.com> 2012-03-23 10:36:52 PDT ---
Hi, i have same problem hdmi audio slow. Radeon 5450.
But dual screen hdmi+crt 1920 x 1080 audio works fine.

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--- Comment #21 from Vincenzov <vincenzov72@hotmail.com> 2012-03-23 11:00:19 PDT ---
ok
1280x720 radeon 5450 works

avivotool regset 0x05b0 0x00138800

works good

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--- Comment #22 from Vincenzov <vincenzov72@hotmail.com> 2012-03-23 11:24:09 PDT ---
vincenzo@AthlonII-260:~$ sudo avivotool regset 0x05b0 0x00138800
OLD: 0x05b0 (05b0)      0x00075300 (480000)
NEW: 0x05b0 (05b0)      0x00138800 (1280000)

work only 1280x720

slow with 1920 x 1080

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--- Comment #23 from Vincenzov <vincenzov72@hotmail.com> 2012-03-23 11:50:50 PDT ---
sudo avivotool regset 0x05b0 0x00271000


works good whit 1920 x 1080

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #24 from Alex Deucher <agd5f@yahoo.com> 2012-04-04 08:50:44 PDT ---
Please see:
http://lists.freedesktop.org/archives/dri-devel/2012-March/020717.html
http://lists.freedesktop.org/archives/dri-devel/2012-March/020855.html
http://lists.freedesktop.org/archives/dri-devel/2012-March/020857.html
http://people.freedesktop.org/~agd5f/0001-WIP-port-of-hdmi-dp-audio-code-to-newer-kernel.patch

As per the comments in the last patch:

+    /* Express [24MHz / target pixel clock] as an exact rational
+     * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
+     * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
+     */

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #26 from Vincenzov <vincenzov72@hotmail.com> 2012-04-07 11:16:54 UTC ---
Error when compiling.

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #25 from Vincenzov <vincenzov72@hotmail.com> 2012-04-07 09:51:19 PDT ---
Hi
i can't patch a kernel 3.4.0-rc1
i can't patch a kernel 3.3.0
:-(
error radeon display

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #27 from Vincenzov <vincenzov72@hotmail.com> 2012-06-03 09:24:50 PDT ---
hi , i have compiled kernel 3.5-rc1 but radeon 5450 audio slow.

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--- Comment #30 from Vincenzov <vincenzov72@hotmail.com> 2012-06-09 08:38:39 UTC ---
thanks Christian König and Rafał Miłecki for this work.
Sorry my english is bad, i speak only italian :-).

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #28 from Vincenzov <vincenzov72@hotmail.com> 2012-06-09 08:11:05 PDT ---
kernel 3.5.0-rc2 audio workgood.
i have 2 monitor hdmi, after I changed the initial resolution of the monitor
works fine 2.
example

1 monitor 1920 x 1080 works
2 monitor 1920 x 1080 works.

after i turn off monitor 1, audio monitor 2 slow.
configure monitor 2 and after all audio works good 1 & 2.

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[Bug 46713] HDMI audio played back at a wrong rate

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--- Comment #29 from Christian König <deathsimple@vodafone.de> 2012-06-09 08:33:50 PDT ---
Yeah, the audio rate is controlled by the last output changed.

We should switch to another output if the output driving the audio signal is
turned off.

It's on the todo list.

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[Bug 46713] HDMI audio played back at a wrong rate

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

--- Comment #31 from Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> 2012-08-24 13:46:28 UTC ---
Just testing with 3.6.0-rc3+ from today's GIT and I can reproduce some sort of
sound corruption depending on the video output resolution.

For example, 1360x768 and audio plays fine, while 1366x768 and it is bad.

avivotool register dump says this is the difference between good and bad setup:

-EVERGREEN_AUDIO_PLL1_DIV       000d0bd8
+EVERGREEN_AUDIO_PLL1_DIV       000d1ae2

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https://bugs.freedesktop.org/show_bug.cgi?id=46713

Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #32 from Christian König <deathsimple@vodafone.de> ---
Any objections closing this four year old bug report now?

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