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?
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?
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.
thanks,
Takashi