Description of problem:

I wanted to switch off the system sounds in a Gnome session, but this was not possible. Whenever I pressed the Mute button, the settings reverted to its previous status whenever I switched to a different panel or closed the application.

There were some error messages in journactl from the pipewire-pulse service, so I believe that it could be related to pipewire.

Version-Release number of selected component (if applicable):

gnome-control-center-41~beta-3.fc35.x86_64
pipewire-0.3.34-2.fc35.x86_64

How reproducible:

Always

Steps to Reproduce:
1. Open Gnome Control Center.
2. Go to the Sound panel.
3. Hit the Mute button for System sounds
4. Close the application
5. Check if Terminal still beeps.

Actual results:

System Sounds cannot be muted or made quieter

Expected results:

It should be possible to work with the volume of system sounds.


Additional info:

Sep 07 14:10:44 platypus pipewire-pulse[2659]: failed to set metadata restore.stream.Output/Audio.media.role:Notification = { "mute": true, "volumes": [ 1.000000 ], "channels": [ "MONO" ] }
Sep 07 14:10:50 platypus pipewire-pulse[2659]: failed to set metadata restore.stream.Output/Audio.media.role:Notification = { "mute": false, "volumes": [ 1.000000 ], "channels": [ "MONO" ] }
Sep 07 14:10:53 platypus pipewire-pulse[2659]: failed to set metadata restore.stream.Output/Audio.media.role:Notification = { "mute": true, "volumes": [ 1.000000 ], "channels": [ "MONO" ] }