Find whether you are running ubuntu in x11 mode or wayland mode. The following could help:
https://unix.stackexchange.com/questions/202891/how-to-know-whether- wayland-or-x11-is-being-used If you are running in wayland mode, can you logout and login in x11 mode, and see if the issue happens. "mmkeys" plugin was written for x11. It might need to be modified to support wayland. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to rhythmbox in Ubuntu. https://bugs.launchpad.net/bugs/1890494 Title: Closing Rhythmbox does not free the media keys To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/1890494/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs