all the current driver in Ubuntu's repository. It is older than the one AMD has released, but will be supported by the Ubuntu people. Catalyst 8.3 is in the repositories.
<code>
$ sudo apt-get updat... 1/xorg.conf
</code>
In the device section, if it is not already there add:
<code>
/etc/X11/xorg.conf... river "fglrx"
</code>
Then to make sure Xorg is set up correctly, you'll have to let aticonfig "i