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
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 bell-windowing- system
load-module module-x11-bell sample=
2) Run "pulseaudio -k" to restart pulseaudio.
That is, I just followed this post: https:/ /bugzilla. redhat. com/show_ bug.cgi? id=607393# c15