Disable PulseAudio mute control

If you have PulseAudio installed together with ALSA mixers, there can be issues with channel muting. If you unmute Master channel, Speaker and Headphones still remain muted.

That's because PulseAudio tries to manage volumes itself. That behavior can be disabled by editing /usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common file. Make sure its sections have switch and volume parameters set to ignore:

[Element PCM]
switch = ignore
volume = ignore

[Element Speaker]
switch = ignore
volume = ignore

[Element Headphone]
switch = ignore
volume = ignore