Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
S. G. wrote:
> please find attached the requested outputs.
Thanks.
I do not know pulseaudio well, so one more question. Can you reproduce
this without using pulseaudio? Like so (in a "pasuspender bash" session):
alsamixer -c0
... fiddle with "mute" knob, which seems to bound to the 'M' key ...
aplay <some sound file>
If so, please report this at http://bugzilla.kernel.org/, product Drivers,
component Sound (ALSA), and let us know the bug number so we can track
it. Be sure to include:
- steps to reproduce (ideally not requiring pulseaudio), expected result,
actual result, and how the difference indicates a bug
- which kernel versions you have tested and results with each
- full "dmesg" output from an affected kernel, as an attachment
- pointers for where to get relevant alsa-info.sh output (or you can
attach them separately, too)
- which outputs are affected, and whether results change when
headphones are plugged in
- what kind of tests you'd be able to perform to track this down (e.g.,
if someone provides a debugging patch, can you test it? Can you bisect?)
- any other weird symptoms or observations
If it is not reproducible without pulseaudio, we can get help from the
pulseaudio maintainers, so that's fine, too.
Sorry for the fuss, and hope that helps,
Jonathan
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02-24-2012, 09:19 AM
"S. G."
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
Hi
alsamixer offers no mute knob on the master channel with kernel 3.2.6, see below.
So I don't see how to reproduce things with alsamixer.
How to proceed?
Thank you for your patience
Sven
Am Donnerstag, den 23.02.2012, 16:52 -0600 schrieb Jonathan Nieder:
> S. G. wrote:
>
> > please find attached the requested outputs.
>
> Thanks.
>
> I do not know pulseaudio well, so one more question. Can you reproduce
> this without using pulseaudio? Like so (in a "pasuspender bash" session):
>
> alsamixer -c0
> ... fiddle with "mute" knob, which seems to bound to the 'M' key ...
> aplay <some sound file>
>
> If so, please report this at http://bugzilla.kernel.org/, product Drivers,
> component Sound (ALSA), and let us know the bug number so we can track
> it. Be sure to include:
>
> - steps to reproduce (ideally not requiring pulseaudio), expected result,
> actual result, and how the difference indicates a bug
> - which kernel versions you have tested and results with each
> - full "dmesg" output from an affected kernel, as an attachment
> - pointers for where to get relevant alsa-info.sh output (or you can
> attach them separately, too)
> - which outputs are affected, and whether results change when
> headphones are plugged in
> - what kind of tests you'd be able to perform to track this down (e.g.,
> if someone provides a debugging patch, can you test it? Can you bisect?)
> - any other weird symptoms or observations
>
> If it is not reproducible without pulseaudio, we can get help from the
> pulseaudio maintainers, so that's fine, too.
>
> Sorry for the fuss, and hope that helps,
> Jonathan
>
02-24-2012, 09:42 AM
Jonathan Nieder
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
S. G. wrote:
> alsamixer offers no mute knob on the master channel with kernel 3.2.6, see below.
[...]
> With kernel 3.1.8 there is a mute knob on the master channel.
Oh, good find. I should have noticed that the 'Master Playback
Switch' had disappeared in your alsactl output.
> How to proceed?
Please report this upstream using bugzilla.kernel.org, product
Drivers, component Sound (ALSA), as described in my last message, and
let us know the bug number so we can track it. Simple reproduction
recipe that does not involve pulseaudio: run "alsamixer -c0" and check
if the "mute" knob has gone missing.
Sorry for the confusion.
Jonathan
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02-26-2012, 02:29 PM
"S. G."
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
Reported upstream, bug number 42825
https://bugzilla.kernel.org/show_bug.cgi?id=42825
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02-26-2012, 03:02 PM
Jonathan Nieder
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
# version number is a guess
reassign 660994 pulseaudio 1.0-4
affects 660994 + src:linux-2.6
quit
S. G. wrote:
> Reported upstream, bug number 42825
> https://bugzilla.kernel.org/show_bug.cgi?id=42825
Thanks, reassigning to pulseaudio for now.
Sjoerd et al: S.G. reported[1]:
> after upgrading from kernel 3.1.8 muting the master channel is ignored.
>
> A workaround is to set volume control to zero.
Takashi Iwai explained[2]:
> This codec chip has really no mute control, thus it's actually a fix that
> removes the invalid control.
If I understand correctly, the problem is that pulseaudio's mute
doesn't mute when the Master Playback Switch is not present. Please
feel free to reassign back to the kernel if there turns out to be a
fix that can be applied in the kernel to help, though.
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03-28-2012, 08:34 AM
"S. G."
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
I can confirm the fix for the latest kernel in testing: 3.2.12.
Cheers,
Sven
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03-28-2012, 12:59 PM
"S. G."
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
I can confirm the fix also for the latest kernel in experimental: 3.3-1~experimental.1.
Cheers,
Sven
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03-28-2012, 02:32 PM
Jonathan Nieder
Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
> I can confirm the fix for the latest kernel in testing: 3.2.12.
[...]
> I can confirm the fix also for the latest kernel in experimental:
> 3.3-1~experimental.1.
Thanks for checking, and thanks for making it happen.
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Bug#660994: Mute with Pulseaudio ignored on a Thinkpad T500
