Actually, the problem with the ucm config files is that the control names have changed (yet again). Need to edit /usr/share/alsa/ucm/Panda/* and change "HS" to "Headset", run "alsaucm set _verb HiFi" and reboot. I got it working here and Patrick verified on his.
So this bug has two issues; The kernel patches are needed, and the ucm config files need updating.
Actually, the problem with the ucm config files is that the control names have changed (yet again). Need to edit /usr/share/ alsa/ucm/ Panda/* and change "HS" to "Headset", run "alsaucm set _verb HiFi" and reboot. I got it working here and Patrick verified on his.
So this bug has two issues; The kernel patches are needed, and the ucm config files need updating.