https://bugzilla.kernel.org/show_bug.cgi?id=50091

--- Comment #6 from schaefer.frank@gmx.net 2012-11-15 15:38:40 --- I've updated to 3.7-rc5 of today and the first reboot the system started normally (!). I was able to retrieve the dmesg output before the machine died again after ~2 minutes (with the same garbled screen). The next 5 reboots again failed on X-server start.