I'm seeing the same behaviour on my ThinkPad T42 with ATI Technologies Inc Radeon Mobility M7 LW running Edgy.
If memory serves me right, I usually get this behaviour when the external (VGA) screen is plugged in at boot. If I plug in the external screen after X has started up, I get a cloned display. However, there is some regression wrt the cloned display; xv overlays now only get displayed on the internal LCD, and not on the external screen. This used to work on Dapper, but I remeber I sometimes had to restart X to get the overlay/external screen to work properly. Fallback for me is to do video scaling using gl. And reboot my laptop a lot. -- External monitor not working Radeon Mobility M6 LY after a regular Edgy update https://launchpad.net/bugs/67183 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
