Just upgraded to xserver-xorg-video-nv-2.0-0ubuntu2 and I have the same behaviour. Currently and since the 2.0-0ubuntu1 upgrade only vesa works for me on a Geforce2 MX-400.
-- Blank screen with the latest nv drivers https://launchpad.net/bugs/96833 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs