My IBM X31 laptop has the capability to drive an external VGA monitor in addition to it's built in XGA (1024×768) Laptop Video Display Screen (LVDS). The new xrandr extension allows non-privlidged users to change monitor layouts on-the-fly. And now, thanks to my friend Tracy, I know the "extra magic" to make it all work.
On the fly external monitor support (mirroring / spanning) on Ubuntu 7.10
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