[alsa-devel] [PING!] Re: HDMI audio is not working on my new desktop

[Alexander E. Patrakov]

2013/8/22 Wang Xingchao <wangxingchao2011 at gmail.com>:
> cc Mengdong and Liam, we're in the same PRC audio Team.
>
> 2013/8/21 Alexander E. Patrakov <patrakov at gmail.com>:
>> 2013/8/21 Wang Xingchao <wangxingchao2011 at gmail.com>:
>>> Hi Takashi/Alexander E. Patrakov,
>>>
>>> 2013/8/20 Takashi Iwai <tiwai at suse.de>:
>>>> Xingchao, could you take a look at this bug?
>>>
>>> sure, i will take a look at it.
>>> But i'm afraid i cannot continue tracking from next week, i'm under
>>> leaving process at Intel.
>>
>> Best wishes to you, and good luck with a new job :)
>>
>> But then please tell us the contact information of the person at Intel
>> who should be contacted instead of you for any further questions
>> related to HDMI audio on Haswell.
>>
>>> At first glance, i saw a lot of errors:
>>>
>>> [  772.822663] playback write error (DMA or IRQ trouble?)
>>> [  782.912776] playback write error (DMA or IRQ trouble?)
>>> [  793.002904] playback write error (DMA or IRQ trouble?)
>>> [  803.093052] playback write error (DMA or IRQ trouble?)
>>> [  813.183205] playback write error (DMA or IRQ trouble?)
>>> [  823.273217] playback write error (DMA or IRQ trouble?)
>>>
>>> I know this issue on some Haswell ULT boards(STP/WTM1) because they
>>> are not stable, and it's better to use latest BIOS image(V131 or
>>> later).
>
> btw, did you do any suspend/resume operation before the audio playback test?
> if not, it's a new case. i found the issue only on some particular
> boards after suspend/resume.

The issue is 100% reproducible without suspend/resume. Just in case, I
tested after one suspend-resume cycle, it didn't fix the problem.


-- 
Alexander E. Patrakov