Originally Posted by AaronP
Thank you. Does the problem go away if you comment out the 1680x1050 ModeLine entry in xorg.conf?
Under the new driver I tried this file as well as a blank file with all sorts of settings; commenting out the 1680x1050 mode line didn't work, as it complained that all resolutions were too big for the 640x480 "native" resolution of the panel. Backing down to the revision of the driver I was using before the rebuild makes it work just fine...