After installing the proprietary ati driver, the gnome-panel in the gnome3 shell is completely messed up. uninstalling the driver doesn't work, any ideas?
I managed to install the 11.9 driver manually what overwrites the driver (11.8). Download the new Catalyst Driver here http://support.amd.com/, then change to the directory where the driver is located, then:
install the *.deb's with
reboot. Now it should be overwritten. Gnome Shell still has graphic bugs though, but it runs.