Messages in this thread | | | Date | Wed, 22 Sep 2010 17:30:51 +0300 | Subject | re: PROBLEM: snd_intel_hda audio regression in 2.6.36-rc5 | From | Aki Parviainen <> |
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On Wed, Sep 22, 2010 at 12:31 PM, Takashi Iwai <tiwai@suse.de> wrote: > > At Tue, 21 Sep 2010 20:32:54 +0300, > Aki Parviainen wrote: > > > > I've noticed an audio related problem in 2.6.36-rc5: when using 2.6.36-rc5 kernel > > I don't get normal two channel PCM audio at all on my machine, however multichannel audio > > works just fine. > > What does this mean exactly? Could you show your test method? >
Thank you for your answer and sorry for being unclear! This means that whenever I try to output regular stereo audio from files or DVB for example I cannot hear anything at all with 2.6.36-rcX kernels. Before 2.6.36-rcX kernels normal stereo audio works just fine. However with 2.6.36-rcX kernels and all the previous kernels digital preencoded (like Dolby Digital, DTS) audio works just fine. I am using Kaffeine 1.0 and VLC 1.1 (both from Debian unstable) to play audio, both programs work exactly the same. My test method is basicly this: -boot with 2.6.36-rc4 or 2.6.36-rc5 -open kaffeine or vlc -start playing mp3 file -> nothing comes to the amplifier -start playing mkv file with 5.1 track -> correct audio comes to the amplifier
> > > I'm using snd_hda_intel and I've configured ALSA to send all > > audio to spdif output. With earlier kernel versions this kind of setup works > > just fine but with 2.6.36-rc5 only audio that works is digital preencoded audio (5.1 dolby digital from > > dvd:s / mkv:s) works. There's no errors or anything but nothing comes to my > > amplifier. I've also tested 2.6.36-rc4 and it has the same problem, in the past I've never had any audio problems with mainline kernels. > > Which kernel did it work?
2.6.35.5 and every earlier kernel tested. Unfortunately the first 2.6.36 based kernel that I tested was 2.6.36-rc4 and there audio doesn't work anymore.
> > > Booting with earlier kernel solves the problem immediately. > > Run alsa-info.sh (with --no-upload option) on both working and > non-working kernel, and attach two files for compare. This will give > a more clear sight what is different between them. >
Here's the alsa-info files attached from 2.6.35.5 (works) and 2.6.36-rc5 (doesn't work).
Yours,
Aki [unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream] | |