I had the same problem. I have installed the NVidia drivers and can only select my desired screen resolution through the nVidia settings app. Then it will be available in the display properties app. I think there is a conflict between these two apps and that may be a part of the problem. Also every time I reboot I have to reselect my screen resolution.
-- [apport] gnome-display-properties crashed with SIGSEGV in ??() https://launchpad.net/bugs/81895 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs