Comment 19 for bug 1764965

I could fix it by executing the following workaround:
pacmd load-module module-alsa-source device=hw:2,2

The actual hw numbers might vary, depending on your specific board and how many other audio devices you have connected.

Now I have switched to pipewire and that doesn't work anymore.
I even tried by replacing pacmd by pw-cli, but I get:

pw-cli load-module module-alsa-source device=hw:2,2
Error: "Could not load module"

Any hints?