Comment 77 for bug 728745

There is a bug in Jockey in that once a proprietary driver has been installed, then the Nouveau driver (Listed as Experimental 3D) disappears never to return!. Apparently you have to uninstall and purge the nvidia drivers and reset xorg.conf to get the Nouveau one back in the list, so it can be activated. See http://ubuntuforums.org/showthread.php?t=1046504.

I am not using natty myself, just test driving it (to try out Unity mainly). So I am happy to run debug stuff and fixes, but only with a view to help Canonical to get natty working properly.