Bug#660994: [3.1.8 -> 3.2.4 regression] Mute with Pulseaudio ignored on a Thinkpad T500

[Jonathan Nieder <jrnieder@gmail.com>]

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