I just got ubuntu 12.04 and the graphical options were working fine with one monitor.
After installing the second monitor there are many glitches and issues. Too many, sadly. I am asking here about one in particular:
If I execute: Displays under System settings I get the error: "RANDR extension is not present".
Sometimes after moving windows or switching workspaces I get an error saying that compiz crashed too.
Any thoughts/solutions on that?
I am using: GeForce 9400 GT, 512 MB Nvidia dryver: 295.40