Comment 135 for bug 642518

The Ati's hotfix worked for me too, but I had to generate and use the packages for Ubuntu/lucid too. With the generated packages I run ati-driver-installer-8.771.2-x86.x86_64.run and installed it normally. After the installation finished I installed the generated packages in the following order:
fglrx
fglrx-dev
fglrx-amdcccle
fglrx-modaliases
The last step was running the "aticonfig --initial" command.
This way worked for me, installing the ati-driver-installer-8.771.2-x86.x86_64.run without the packages haven't worked for me.
Nevertheless, the first time I rebooted the system, the login screen was not shown. I used the RESET BUTTON and the problem got "solved".