Comment 2 for bug 273507

I managed to get my login sound working by installing the package libcanberra-gnome.

This package has the same description as libcanberra-gtk0:
"Gtk+ helper for playing widget event sounds with libcanberra
libcanberra-gtk provides a few functions that simplify libcanberra
usage from Gtk+.

Contextual informations are needed to play event sound. This library
can help to compile directly event sounds property lists based on
active GtkWidget objects or GdkEvent events."

however it adds the lines
"This package contains files necessary to get full GNOME sound event
functionality."

So you would think that it should be a dependency of ubuntu-desktop, but it isn't. It is however a dependency of ubuntustudio-desktop. Is this an oversight?

Either way, it still doesn't fully enable the sounds. I still have no logout sound and if I select the "Play sound effects when buttons are clicked" checkbox in Sound Preferences, I still here no click when I click a button.