Comment 6 for bug 462973

I have tested all screen resolutions manually using ubuntu's display configuration.

Only the following can be activated successfully:
1680 x 1050 16:10
1280 x 1024 5:4
832 x 624 4:3
640 x 480 4:3

All others either fail with going back to login screen or end up with a new picture with the newly configured resolution, however the screen is not built up completely and no longer updated.