This is still a problem in Karmic Beta. I recently attempted a clean install (starting from a live desktop session) on a Dell C800 with an ATI Rage Mobility M3 and 1400x1050 monitor and saw the 'overlapping display' problem when X was started so did not proceed with the actual installation
The nature of the problem can be seen clearly on the page below http://www.baltimoremick.com/blog/2008/08/25/dell-latitude-c800-display- problems-with-ubuntu/ Prior to this installation attempt, the laptop already had a working Xorg.conf customized after the same problem was found after installing Hardy last year. This was copied to USB before the laptop was wiped during an installation from the Karmic alternate install CD and copied back to /etc/X11 once the installation had been completed. This resolved the problem. Several attachments follow: The working xorg.conf taken from Hardy The xorg log file when no conf file was present The xorg log file when the xorg.conf file from Hardy is present ** Attachment added: "Working xorg.conf" http://launchpadlibrarian.net/33189740/xorg.conf -- [M4] Dell Inspiron 8000 shows split display on LiveCD https://bugs.launchpad.net/bugs/247771 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp