It seems that xorg.conf is related to the problem. If I use "Monitor & Display - System Settings" in the system settings tool in administrator mode, the next time I start X (usually on reboot) the resolution is all wrong.
Restoring the old xorg.conf restores the resolution. In the attached file ** Attachment added: "diff of good vs bad. xorg.conf.1 has the good settings" http://librarian.launchpad.net/5855238/y -- display options stuck in low resolution https://launchpad.net/bugs/77483 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs