The second screen cannot be autodetected currently, furthermore displayconfig-gtk does not support dual head with the latest intel and ati driver anymore, since boths drivers no longer support zapohad (use xrandr 1.2 instead).
Alternatively you can use the command line tool xrandr, the frontend grandr or take a look at http://www.intellinuxgraphics.org/dualhead.html
The second screen cannot be autodetected currently, furthermore displayconfig-gtk does not support dual head with the latest intel and ati driver anymore, since boths drivers no longer support zapohad (use xrandr 1.2 instead).
Alternatively you can use the command line tool xrandr, the frontend grandr or take a look at http:// www.intellinuxg raphics. org/dualhead. html