Ubuntu Natty Installation Guide
Since Ubuntu Natty/11.04 is still under construction, so is this page. Until Natty is released, the Maverick guide ( http://wiki.cchtml.com/index.php/Ubuntu_Maverick_Installation_Guide ) will serve as the main source of info on ATI Catalyst. This page will only note items that are relevant to Natty, but not Maverick.
AMD has issued a special preview release of fglrx/Catalyst for use with Ubuntu Natty/11.04. You can install it using Synaptic or from the command line:
$ sudo apt-get install fglrx fglrx-amdcccle
Note: the Additional Drivers/jockey app does not find the proprietary driver at this time --Dtl131 00:51, 31 March 2011 (UTC)
Installing the drivers manually
Versions of Catalyst downloaded directly from AMD will not work on Natty/11.04 at this time. See the section above for details on using Catalyst.