nVidia driver on Linux, and the need to reset the resolution on reboot

"I could be terribly wrong here, but I don't think that your xorg.conf is to blame.

Check the settings in System -> Preferences -> Display

If that menu entry is not present, it is either disabled in the menu or the required package is not installed. You need to run gnome-display-properties which is included in the gnome-control-center package.

And if you are not using Gnome, just forget everything I just wrote."