Originally Posted by mrvandal
Thanks for the link, but unfortunately I have an old ATI Radeon so the Intel drivers won't work.
The ATI proprietary drivers (fglrx) do not work with my card either. I believe the only driver that works for this card in Linux is the open source 'radeon' driver. I had the radeon driver working with a spanning desktop in Fedora 7, but as I said in my previous post, Fedora 8 has problems spanning the desktop. The radeon driver works great as far as one display is concerned with Fedora 8.
I run the radeon driver on two systems and this next thing works on one and not the other:
you need to grab your monitor definition using xrandr both monitors must be connected and on then in the console type
you will see screen 0 and its settings and then underneath that all connected displays (you add the two resolutions so if its 1280x1024 on each in your xorg.conf file under your screen section and in the sub section display make the last line of sub section
Virtual 2560 1024
logout to restart X
back in the console (lets say you have one LCD on vga and the other on dvi and xrandr has identified them respectively as VGA-0 and DVI-0 and the vga is on the left) type in the console
xrandr --output VGA-0 --left-of DVI-0
that will create spanning dynamically but if it works... you will have to run that last console command everytime you log in to get spanning to work. Its a pain but it works (if your desktop doesnt stretch the wallpaper all the way across the second monitor but things are working dont trust it there will be system lockups and instability in your future)