i followed the instructions on this page http://geek.co.il/wp/2012/02/19/nvid...n-ubuntu-12-04
I have been trying to get dual-screen for a long long time now, so i just followed those instructions and where he says it should be 86 frames per seconds which i had but after restarting my monitor got 640x480 and i got over 300 frames per second. and when i open 'NVIDIA X Server Settings' and get this error
after that i restarted my computer and thats when this 640x480 thing started...
You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run `nvidia-xconfig` as root), and restart the X server.