2013-04-29, 10:15
Every driver after 12.11 (xorg 1.12 only) and 12.9Quantal(xorg 1.13 shipped with Ubuntu 12.10) is broken. It causes 100% CPU usage with enable vsync.
There is currently no driver that can be installed for Ubuntu 13.04 - don't use this version.
Currently you have the choice to use Ubuntu 12.04 and manually install Catalyst 12.11. Alternatively you can install 12.10 and keep the provided driver (fglrx 9.0.0ubuntu3). Ubuntu 13.04 ships with Catalyst 13.1 that is broken, Catalyst 13.4 is also broken. Every other Catalyst release / beta since then is also affected.
In short: Don't use Ubuntu Raring.
There is currently no driver that can be installed for Ubuntu 13.04 - don't use this version.
Currently you have the choice to use Ubuntu 12.04 and manually install Catalyst 12.11. Alternatively you can install 12.10 and keep the provided driver (fglrx 9.0.0ubuntu3). Ubuntu 13.04 ships with Catalyst 13.1 that is broken, Catalyst 13.4 is also broken. Every other Catalyst release / beta since then is also affected.
In short: Don't use Ubuntu Raring.