After updating, I can’t hear sound anymore, and the icon in the KDE bar has a “no sound” (like ø) symbol, and I don’t see any audio devices (also none in pavucontrol).
The problem is reproducable: I just restored a one week old snapshot (after which the sound was working), updated, rebooted, and the problem is back.
I see problems in the log:
$ journalctl -e -b | grep -i audio
Feb 05 11:19:24 elendil-pc systemd[1900]: Listening on PipeWire PulseAudio.
Feb 05 11:19:26 elendil-pc systemd[1900]: Started PipeWire PulseAudio.
Feb 05 11:19:27 elendil-pc plasmashell[2052]: org.kde.plasma.pulseaudio: No object for name "@DEFAULT_SINK@"
Feb 05 11:19:27 elendil-pc plasmashell[2052]: org.kde.plasma.pulseaudio: No object for name "@DEFAULT_SOURCE@"
Feb 05 11:19:34 elendil-pc systemd[1367]: Closed PipeWire PulseAudio.