Comment # 29 on bug 1197434 from Takashi Iwai

Feel free to ping the upstream bug tracker.  It's likely that they are too busy
for other tasks.

One thing you can test more would be, though, restoring the mixer element one
by one, and check which one breaks the mic.

For example, if "alsactl store" output contains the entry like

state.sofsoundwire {
        control.1 {
                iface MIXER
                name 'rt711 DAC Surr Playback Volume'
                value.0 87
                value.1 87
                comment {
                     ......

Then the element 1 can be restored manually via amixer like:

  % amixer -Dhw:sofsoundwire cset iface=MIXER,name='rt711 DAC Surr Playback
Volume' 87,87

If restoring each element in that way, does it also break mic?  If yes, which
entry triggers it?  That can be investigated.