Comment 66 for bug 969489

#64 provides a work-around that does the trick for me too. I'm on the same kernel as jmac939 there, and about 50% of the time my system boots properly into the lightdm login screen. But the rest of the time the system fails to do so but shows only the black screen + mouse pointer. When that happens, I type in my password blind and my login proceeds normally. Obviously, this wouldn't work for a multi-user system [unless keyboard arrow presses get the user to the right login box].