With the official alsa-ucm-conf 1.2.2 and with the official kernel the sound works. However I needed to use alsamixer manually to manage the volume levels when plugging in and out the headset jack.
I didn't find a Groovy build of the testing 1.2.2 in your ppa, therefore I installed alsa-ucm-conf 1.2.3 from Debian testing, rebooted and a perfectly working sound was back.
@Hui
I updated today to 20.10 and tested.
With the official alsa-ucm-conf 1.2.2 and with the official kernel the sound works. However I needed to use alsamixer manually to manage the volume levels when plugging in and out the headset jack.
I didn't find a Groovy build of the testing 1.2.2 in your ppa, therefore I installed alsa-ucm-conf 1.2.3 from Debian testing, rebooted and a perfectly working sound was back.