Desktop login sound doesn't play after login
Solution 1:
Rather than deleting the whole .dconf folder, just open dconf-editor and navigate to:
org.gnome.desktop.sound
Change the value of "theme-name" to "ubuntu"
Also check to make sure that "GNOME Login Sound" is checked in "Startup Applications".
I've also filed a bug about this:
- http://pad.lv/883677