For those finding this bug when having an issue other than the irregular muting when using the volume control applet slider with the Volume Control panel open, please keep searching. You may be experiencing Bug #42240, or perhaps even a different issue, which should also be reported.
-- Mute conflict between gnome-volume-applet and gnome-volume-manager https://launchpad.net/bugs/42853 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs