Trying to figure out how to put your second monitor and dual port graphics card to good use in FC9? How about creating a virtual desktop that will span the second monitor. Resist the urge to edit xorg.conf and think about the layout or position the second monitor will take. I like to have my 1600x1200 display right of the 1280x960 laptop display.
Since I want the virtual desktop to span both screens horizontally I need to specify a virtual screen of 2880x1200. I derived at this number by adding the the pixel length of both displays together (1280+1600) and the pixel height of the biggest monitor (1200).
xorg.conf I added
"Virtual 2880 1200" in the Section
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Now restart Xorg by pressing
Ctrl-Alt-Backspace and run gnome-display-properties to adjust the position of the screen (left of right) and set the proper resolution. Be sure to uncheck