UPDATE: After upgrade to Debian testing (trixie/sid): plasmoids still don't work, KDE doesn't find sound devices.

[René J.V. Bertin]

On Wednesday September 20 2023 07:44:15 Michael Eager wrote:
>Pipewire is running.

And KDE (KMix in particular) knows how to use it (or else you have the PulseAudio compatibility thing configured)? Do non-KDE applications have working audio?