Comment 6 for bug 645377

This is another example of gnome-settings-daemon trying to be smarter than the X server, see bug 640807.

Interestingly, the faulty 1600 mode does not show up in the modes list in the apport-collected bug summary, so it must have been injected later. Does g-s-d add new modes?

MrMacman2u, please file a bug report on your issue. You can refer to this and other bug reports in your report, but please make a complete report with all needed information, by using "ubuntu-bug xserver-xorg-video-ati".