On Sun, 11 Aug 2024, Adrian Zaugg wrote:

>> 2. install pipewire-audio, *from backports*
>I installed from stable (0.3.65).

Please install from backports. 0.3.65 is over a year old software, pipewire
matured a lot since then. The links you posted show people not running the
latest either. You have not stated whether the pipewire daemon is running, is
it? If it's not, then that's the reason you don't have sound.

-- 
Cheers,
                 Ludovic