Was looking for an answer to this question also. I expect that many
who use laptops would be setting up extended desktop, and I would
be surprised if there is not a simple solution to doing so with linux
somewhere.
Did find one paper on the subject so far. Will give it a try when I get
a chance. Being still a newbie it will take a while. The following may
be helpful. Would really like to see a simpler solution though.
http://www.linuxlookup.com/modules.p...tpage&artid=13
I expect that eventually the XF86Config programs will be written
to simplify setting up the vga port on the laptops.