Phoronix: Installing The RadeonHD Driver On Ubuntu

While today's unveiling of the RadeonHD driver for the ATI R500 and R600 series is great news, this driver right now is targeted solely for developers as it's still experimental and doesn't yet support 3D acceleration and other key functionality generally needed in production environments. However, if you are looking to try out this new RadeonHD driver on Ubuntu because you're running into problems with the proprietary fglrx driver or just wishing to report your results, we've documented the installation procedures for Ubuntu.

http://www.phoronix.com/vr.php?view=11067