with this lines added to my xorg.conf the resolution of 1680x1050 does work. with and without the nvidia-driver.
** Attachment added: "xorg.conf" http://launchpadlibrarian.net/17922014/xorg.conf -- monitor resolution settings are wrong https://bugs.launchpad.net/bugs/273797 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs