Description of problem:

All started with this bug : 
https://bugzilla.redhat.com/show_bug.cgi?id=1072929

I now tried several rawhide kernels, but now each time I boob my screen just shutdown.
I can reach the machine with ssh sometimes.


Version-Release number of selected component (if applicable):
3.14.0-0.rc8.git0.1.fc21.x86_64

How reproducible:
On my PC : install fedora, yum-update, then rawhide kernel install.

Steps to Reproduce:
1.boot
2.???
3.profit

Actual results:
Screen shutdown/ x doesn't start.

Expected results:
Anything else.

Additional info:
Please read https://bugzilla.redhat.com/show_bug.cgi?id=1072929

And I can get you any information you need, just ask me.