Comment 3 for bug 776565

For me, it's not just compiz, in that Unity also fails terribly if I start up with an external monitor attached, or plug one in after logging in. The extended portion of the desktop does crazy stuff, like having a second status bar and maybe second set of launcher icons, but they don't work normally, and only part of the screen being drawn on, and any windows dragged onto that display become black (invisible)... Probably this requires a separate report. But it looks like Unity has not even been designed to deal with extended desktops!?