I am a newbie to Linux and have installed 12.04 on to an old Dell GX260, I was hoping that I could slowly extract myself from Microsoft - but unless I can fix this simplest of problems I am thinking that this version of Linux is not ready for me yet!!

I have read various posts but none seem to match, I believe the driver is installed, but under displays the maximum allowed in the drop down box is 1024x768 (4:3) display is unknown and detect displays does nothing. I have loaded all updates available but still no fix.

xrandr shows: VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2
848x480 60.0
640x480 59.9
xrandr --addmode VGA1 1360x768 cannot find mode "1360x768"

anything above 1024x768 can not be found, but then I could be doing this out of step!!