Comment 12 for bug 1504175

(In reply to flocculant from comment #0)
> Using Xubuntu 16.04.
>
> pavucontrol - 3.0-3build1
> pulseaudio - 1:7.1-1ubuntu1
> pulseaudio-module-x11 - 1:7.1-1ubuntu1
> pulseaudio-utils - 1:7.1-1ubuntu1
>
> Start up pavucontrol and the sound mutes momentarily - perhaps 1s or so
>
> reported it externally - affects me with C-Media CMI8788 [Oxygen HD Audio]
> driver: snd_virtuoso
>
> seen by someone else with Intel 5 Series/3400 Series High Definition Audio
> driver: snd_hda_intel
>
> https://bugs.launchpad.net/ubuntu/+source/pavucontrol/+bug/1504175

Oct 08 15:30:39 hostname pulseaudio[1719]: [pulseaudio] alsa-mixer.c: Volume element Master has 8 channels. That's too much! I can't handle that!

Do you mean this patch does not work?

http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa?id=fcbbe34e001b9bee3e73a663e9bf9ddc11c0a1d5