When installing FC7t2 on a 12" Powerbook, the screen goes blank shortly after
kernel starts to load. Adding video=ofonly seems to fix the problem. FC6 works
fine here. This is mentioned on
http://fedoraproject.org/wiki/QA/7/Test2TreeTesting but without a bug number, so
I decided to file it.
Just checked with the newer rawhide version and it works again. Please discard.