I have a GT 430 Nvidia, was working fine till I upgraded to 12.04 yesterday. Apparently, nvidia decided to remove the overscan slider. I can't adjust to fix the overscan then, except in the xorg.conf which I can't edit. Even if I can, I'm not sure it would fix the problem.
I know the resolution that fits my TV as I have this issue in windows and in Ubuntu, its 1824x1026. Strange resolution, but it works. Is there a way I can either edit xorg.conf or if I can change it without doing so? Am running the latest drivers (not the experimental ones).
The issue with the xorg.conf is that it won't let me edit due to permission.