Am 22.04.2011 16:56, schrieb dhkuhl@optonline.net:
> ----- Original Message -----
> From: Florian Philipp 
> Date: Friday, April 22, 2011 10:45 am
> Subject: [gentoo-user] HDA ATI SB ALC892 sometimes no sound
> To: Gentoo User List
> 
>> Hi list!
>>
>> I've recently bought a Gigabyte GA-880GMA-UD2H board (AM3, integrated
>> Radeon HD 4200). The problem is, sometimes sound works out-of-
>> the-box.
>> Then I reboot and there is no sound at all. There is no error -
>> just no
>> output. The SPDIF port (which I really need) does not emit any light,
>> then. Sometimes after a cold reboot, it works again.
>>
>> I've found several threads pointing to problems with kernel 2.6.32
>> (solved in 2.6.33, I'm on 2.6.36). Some others made me wonder if
>> alsa is
>> confused by the HDMI output of the graphics card. I blacklisted
>> snd_hda_codec_atihdmi and switched driver from fglrx to radeon 
>> but it
>> did not change anything. I don't have the means to check whether there
>> is any output over HDMI.
>>
>> I know that at least Volker has a similar board. Maybe others as well.
>> Does someone have a clue what's going on?
>>
>> I'll append some info.
>>
[...]
>
> I have a similar problem.  There was an email thread about it a few
> months ago.  Nothing much happened with it because sound occasionally
> works for me.  Sometime it comes back after a reboot or restart of
> alsasound, and sometimes if I leave the machine running a long time if
> will just start working or just stop working . . . really weird.  I've
> been running alsaconf a lot and that seem to get it back most of the
> time if not I still need to restart alsasound or reboot.
>
> Also, if you haven't run python-updater in a while you should, that
> seems to fix a lot a odd behavior.
>
> Good luck.
>
> dhk
>

Well, I guess I just spend 20 EUR on an USB soundcard. They work
reliably and quality doesn't matter much anyway if I just need digital
output.

Regards,
Florian