Comment 65 for bug 838577

I succeeded in finding a workaround for Gnone Shell being displayed correctly. Caution: this describe what I remember I did, and I did not reproduce it.

Basically, I tried to follow the steps presented here:

http://drivers.downloadatoz.com/tutorial/28724,how-to-install-and-uninstall-amd-catalyst-11-10-on-ubuntu-11-10-oneiric-ocelot.html

So, now, to what I did:

1. I unninstalled fglrx* according to the procedure therein
2. I downloaded the Catalyst driver and tried to install it
3. Installation failed and told me about using (but not recommending using) the "--force" option
4. I installed Catalyst using the "--force option"
5. I restarted and entered Gnome Shell, which was falling back in the fallback mode and had some strange resolution
6. I unninstalled the Catalyst driver according to the procedure described therein
7. I restarted and, now, for an unknown reason, Gnome Shell is displayed correctly

OTOH, Unity is still not working (only the Nautilus toolbar is displayed) and only Unity-2D is wavailable.

Do not forget about being cautious.