Comment 2 for bug 151884

running
dpkg-reconfigure xserver-xorg
solves the problem.
however some strange things happened when doing this:
the autodetection of my graphics card failed, i had to manually select the flgrx driver.
Also the detection of the monitor failed; the screen went black and i had to reboot.
When manually entering the correct options it works and i can now start x.
i hope this is solved for the final release..

the performance in X seems much slower then it was in feisty however, there is a lot of flickering..