The following fixed it for me, in Ubuntu 12.04 Precise, using Gnome Classic/Compiz:
1) Add the following 2 lines to file /etc/pulse/default.pa: load-sample-lazy bell-windowing-system /usr/share/sounds/ubuntu/stereo/bell.ogg load-module module-x11-bell sample=bell-windowing-system 2) Run "pulseaudio -k" to restart pulseaudio. That is, I just followed this post: https://bugzilla.redhat.com/show_bug.cgi?id=607393#c15 ** Bug watch added: Red Hat Bugzilla #607393 https://bugzilla.redhat.com/show_bug.cgi?id=607393 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-media in Ubuntu. https://bugs.launchpad.net/bugs/769314 Title: System bell broken in Natty/Unity (despite heroic...) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/769314/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs