An unofficial Debian Installer for Pinebook Pro

[yawnoc]

The only other issue is with the audio (controlled by alsa-utils, pavucontrol, and mate-media); it seems quieter than before, and there is always a very loud popping noise shortly after any audio has stopped playing (even when I have muted the volume controller).

I've figured out that the low volume is mainly due to different settings for DAC in alsamixer:

• 100<>100 [dB gain: 0.00, 0.00] in Debian stretch (stock OS), which is VERY loud
  
• 32<>32 [dB gain: -30.00, -30.00] in Debian bullseye (via danielt's installer)
  

I got comfortably loud audio by setting DAC to 60<>60 [dB gain: -13.50, -13.50] and Headphone Mixer to 50<>50 [dB gain: -6.00, -6.00].

This doesn't fix the popping noises, whose loudness is independent of any settings in alsamixer, and which seem to occur whenever audio switches from inactive to active or vice versa.