Bug#498724: ALSA: snd-hda-intel: no working master and unmutable pcm channel
On 02/17/2010 07:38 PM, Moritz Muehlenhoff wrote:
> On Fri, Sep 12, 2008 at 05:37:40PM +0200, Alexander Prinsier wrote:
>> Package: linux-image-2.6.26-1-686
>> Version: 2.6.26-4
>> Severity: normal
>>
>> When I run alsamixer, I can see a master channel, but it has no volume slider.
>> It's possible to mute the master but it has no effect (sound keeps playing).
>>
>> The PCM channel does control the volume, but it is not mutable (the m key
>> doesn't do anything).
>>
>> Any gui mixer application fails to correctly work in this situation. Muting
>> using shortcuts doesn't work, as the only way it could work is by setting
>> the volume to 0%, not by actually "muting".
>>
>> Somehow this problem does not exist in Ubuntu, I don't know how they fixed it.
>
> Sorry for the late response :-/
Also sorry about my late response ;)
> The next release of Debian (6.0, code name Squeeze) will be based
> on 2.6.32. Please test the current 2.6.32 from unstable/testing and tell
> us whether the problem persists. If so, we should report it upstream
> to the kernel.org developers.
I installed linux-image-2.6.32-bpo.5-686 (version 2.6.32-15~bpo50+1) on
my Debian Lenny laptop. After rebooting sound was no longer working.
Beeping however still continued to work.
With "sound no longer working" I mean I couldn't get any sound player to
produce sound. They appeared to be working fine, the progress bar etc
advances, but no sound was coming from my speakers.
Using alsamixer I double checked that everything was un-muted and volume
was set high enough.
But relating to the original question, is the bug about unmutable PCM
channel gone in the new kernel: NO. Using alsamixer, again I saw a
mutable master and an un-mutable PCM channel. I couldn't test whether or
not muting the master channel actually mutes the sound now, as no sound
was coming from my speakers in any case :)
Regards,
Alexander
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