After I use my Fedora 34 system for a while (hours), at one point sound does not play any more. Rhythmbox displays no error message, but the "progress bar" doesn't progress when I play a sound. mplayer shows that the audio device got stuck: $ mplayer /usr/share/sounds/gnome/default/alerts/bark.ogg [...] AO: [pulse] 48000Hz 2ch floatle (4 bytes per sample) Video: no video Starting playback... A: -0.0 (unknown) of 0.5 (00.5) ??,?% Audio device got stuck! A: -0.0 (unknown) of 0.5 (00.5) ??,?% Audio device got stuck! A: -0.0 (unknown) of 0.5 (00.5) ??,?% How can I debug this further?
Now I've caught where this happened: I was on a video call over https://meet.jit.si/ in Firefox and switched to a different GNOME workspace. The audio ended immediately and the system is quiet since then. No output/input devices appear in GNOME sound settings.
FEDORA-2021-2c994d0609 has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-2c994d0609
FEDORA-2021-2c994d0609 has been pushed to the Fedora 34 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-2c994d0609` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-2c994d0609 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-2c994d0609 has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report.
It still happens on Fedora 35. I haven't managed to figure out what causes it to happen, but when it does, I get the same "Audio device got stuck!" sequence when using mplayer to check the status. Restarting the Pipewire service doesn't seem to solve it, only a reboot does.