Is this a specific unity configuration or a dual monitor configuration problems ?
In NVIDIA X Server Settings. Make this the primary display for the X screen, is my choice the middle display. But the launcher is on the left display.
Currently Unity sits itself down at 0,0. Supporting right monitor as primary is simply not implemented yet. It will be by release.
As far as I can tell this has been fixed for nVidia binary driver in the Natty release.
For other graphics drivers there may be still issues, such as Bug 742544.
Screenshots of my setup:
I have found the cleanest way to set my primary monitor (the monitor launcher is displayed on) is with /etc/X11/xorg.conf
The important changes I have made are:
My complete /etc/X11/xorg.conf:
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