Comment 7 for bug 854717

I see two processes during the greeter: One which is in state "Z" (zombie), and one running. The zombie one is a child of ubiquity-dm, the running one of init.

A killall -9 gnome-settings-daemon, and restarting it helps. That doesn't clean up the zombie, of course.

So it seems that there are two g-s-d's racing at each other, ubiquity-dm tries to start a second one, but that one fails because the bus name is already taken?