Comment 56 for bug 969489

I also have this problem, I think!

Occasionally my computer will hang at boot showing only a black screen.
Running Ubuntu 12.10 on the following hardware:

CPU: Intel Core i7-2700K@3.5 Ghz (Sandy Bridge)
GPU: Nvidia GeForce GTX660Ti 2Gb
HDD: Corsair Force 3 SSD 240GB (mounted as / )
Motherboard: MSI B75MA-P45 (LGA1155)
Nvidia binary driver: 310.14

Simply hitting the reset button or power it off and on and it will boot.
I was afraid this was some hardware problem but then maybe not :)