I had the same problems (Toshiba P100, GeForce GO 7900). The xserver- xorg-driver-nv package from Timo fixed it, running 1440x900 again.
-- Xorg nv driver no longer works at 1440x900 https://launchpad.net/bugs/98703 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
