Comment 8 for bug 82709

The problem's back. After the updates of a couple of days ago, the same behavior occurs - normal-seeming login but no gnome splash, no audio and after c. 30 seconds, a grey/white rectangular artifact in the upper left corner of the screen. I've been updating regularly since this returned with no success.

I'm going to do a clean Beta install this weekend and see if I can reproduce & document the steps that lead to this situation.