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

[Jonathan Nieder <jrnieder@gmail.com>]

# 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.

Thanks,
Jonathan

[1] http://bugs.debian.org/660994
[2] https://bugzilla.kernel.org/show_bug.cgi?id=42825