mars@twelve-M266:~$ lspci | grep Ge 01:00.0 VGA compatible controller: NVIDIA Corporation NV18 [GeForce4 MX 4000] (rev c1) I upgraded the computer to precise pangolin (no problems) and then rebooted. The highest screen resolution I could get was 640 x 480
To summarise several hours of my life that I will never get back, there are problems , other than the usual ones, with NVIDIA cards and the upgrade process.
Problems with nvidia drivers are summarised here
to get the display working I had to
remove nvidia-common. it also says it will remove ubuntu-desktop. Keep going - there is still a desktop after the process
It will start a GUI.
Go to the display option, (R click on desktop-> change background -> all settings->display
Select your screen and change the resolution
Reboot ( not just log out of X and start again
It is using the nouveau driver. There is no xorg.conf (no idea why not).
It struggles to run the unity desktp but gnome-classic ( which i use) is fine