Ok, my display was broken after upgrade. It would run the bootloader, then come up with a scrambled screen.
I run an ATI HD 2400.
I booted into safe mode, into a terminal, and removed all the ati drivers with:
then following the instructions.
(apt-get remove fglrx* might do the trick if you have no envyng installed.)
Then I ran
Code:
apt-get install fglrx
and then
Code:
aticonfig --initial -f
worked great! Running with full effects again. Good luck.