Sounds do not work due to the removal of Gnome splash screen. Enable splash screen (in Configuration Editor, apps -> gnome-session -> enable show splash screen) and the sounds should work.
See: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/137118 -- [Gutsy Tribe-5] No Sound on Login Screen or during Login https://bugs.launchpad.net/bugs/129029 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
