It seems that if you check the option to display visual effects when playing audio, rithmbox will inhibit screensaver (or at least notifications) as if you were playing a video.
-- Notify OSD should not rely on applications that inhibit the screensaver https://bugs.launchpad.net/bugs/402962 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs