For 24.04.2:
Just keep resetting, it should work eventually? Running commands might help, or might just slow you down?
It might need a full power cycle instead of just "soft" Reset from the Power Off menu?
For 24.04.1:
Unlike in plain 24.04, the solution is now running this and resetting.
systemctl --user restart pipewire.service
From what this command tells me, I'm using PipeWire Pulse Audio, since everything else comes up with errors.
systemctl --user status pipewire{,-pulse} wireplumber
For 24.04:
Run the following then reset your computer, that's what fixed it for me, since I didn't want to downgrade:
systemctl --force --user --now enable wireplumber.service
Further info:
This seems to be a continuing issue from 22.04 onwards, since I found an answer to a 22.04 version of this problem, then looked up the error messages that I got from attempting and led me to this answer which got me to the code above that worked after a reset.