have you tried blacklisting the Opensource nvidia driver an then removing it an then rebooting? does that help, see this thread. http://forums.fedoraforum.org/showthread.php?t=235793 , im assuming you have a nvidia chipset?I upgraded a f12 to rawhide, but when I rebooted my system freezes before having the login screen with an arrow that I can move, but that's all. I started also in text mode but when I issue startx, system freezes again. The same with nomodeset in boot option. How do I recover???