Possible Duplicate:
ATI graphics card, with gnome shell, screen flickers
I've updated my open source ATI driver to the closed source version. Consequently my Gnome Shell stopped working as well as it used to work. It started to flash weirdly.
I recorded short video to show it:
http://www.youtube.com/watch?v=UpEwn7Fi8Qw
Before the driver update, the Gnome Shell worked fine. With new driver the Unity works fine.
I still prefer Shell (when it still worked correctly), so is there something I can do to fix this issue.