This problem still persists on Edgy final. However, it seems that the dreaded VESA BIOS extensions (VBE) is the culprit. It could be circumvented by using the "native modesetting" branch of the i810 X driver.
-- timings are still dependent on the mode overridden https://launchpad.net/bugs/36811 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
