Comment 23 for bug 197153

From the confirmations, it sounds like all the reporters are using drivers or hardware without proper xrandr 1.2 support. I would imagine fglrx users would have the same problem.

This will require adding some checks to verify 1.2 capabilities of the drivers in g-s-d I suppose. I'll work on it this week; meanwhile disabling the xrandr module is probably the best workaround for now.