Your xorg log file indicates that "(II) NV(0): Not using driver mode "1680x1050" (exceeds panel dimensions)". Have you been able to use this resolution before? Thanks again.
-- x11 resolution chooser not working https://launchpad.net/bugs/92769 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
