When working with two displays there is a question of which display is the "primary". In the case of Unity the primary display is the screen on which the launcher appears for instance. This property can be set using xrandr
, but the gnome-display-properties utility does not give a GUI way to set this. This bug was also raised upstream, and was apparently solved for Gnome 3.0. With the Gnome 3.0 vs Unity thing going on, I think that a bug like this should be addressed within Unity as well (and cannot be resolved upstream). I wanted to file such a bug in launchpad, but didn't know where to do this.
Any help would be greatly appreciated.
The easiest way to file this bug in launchpad is to type the following into a terminal session
gnome-display-properties is part of the gnome-control-center package. I usually prefix the headline "Natty" just to make sure its recognised by the Natty developers.
fossfreedom's answer is correct. In addition to his instructions you can link the GNOME bug report to the Ubuntu bug report by following these instructions:
This ensures that the 2 bugs are linked so that when someone needs to fix it they can find the corresponding bug report upstream.