My graphics card is this
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
http://www.nvnews.net/vbulletin/showthread.php?t=179489
to get the display working I had to
then reboot.
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
