I have the following tv which I am using as a monitor - connected via vga cable:-
DGM 22 inch screen


The monitor is unknown according to ubuntu 12.10

I therefore manually set the resolution to get higher than 1024*768 (4:3) to get 1368*768

Contained in a script:-

xrandr --newmode "1366x768_60.00" 85.25 1366 1440 1576 1784 768 771 781 798 -hsync +vsync
xrandr --addmode VGA1 1366x768_60.00
xrandr --output VGA1 --mode 1366x768_60.00

This works - however now the system regularly crashes and reports GPU crash.

I have a samsung rv520 laptop with intel built in vga graphics card.

Please can someone offer me some advice?