I can confirm exactly the same behaviour after upgrading from Dapper to Edgy. I'm on a Sony Vaio with i810 graphics chip and integrated. It worked fine in Dapper.
The 2 main problems are no redrawing of the desktop or taskbar on the external screen, and windows can no longer be moved freely from the laptop screen to the desktop screen. I also experience crashes/freezes that did not occur before. I have solved this temporarily by setting Xinerama "Off" in the corg.conf file, this leaves me with a workable 2 screen solution, but windows cannot be moved between the screens. I'm attaching my working xorg.conf ** Attachment added: "working Xorg.conf" http://librarian.launchpad.net/4945785/xorg.conf -- dual monitor setup with xinerama & i810 stopped working in Edgy https://launchpad.net/bugs/67985 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
