No sound input/output on Raspbian Bullseye

[LRitzdorf]

I'm currently attempting to transition my Voice Kit v2 to Raspbian Bullseye following its recent release. After installing all dependencies as specified in HACKING.md, as well as the proper audio drivers (#751), I still get no audio output or input from the Voice Bonnet.

Recording a file with arecord gives me a WAV file containing all zeros (after the magic bytes and header), and playing a known-good WAV file doesn't actually play anything. However, neither operation yields any sort of error, and aplay -l shows the sound card as expected. Also, flashing the official AIY image to my SD card causes sound to work immediately, so it's not a hardware/wiring issue.

Is there any existing guidance on this? Or, does the AIY team plan to release an official image based on Bullseye soon?

[EdwardTheLegend]

I upgraded to bullseye as well and for me aplay -l can't see any soundcards at all