Thanks to all for your useful comments;<br>Yes, I do have a Hot Key configuration for display switching. Function key (Fn) plus F10, this worked OK in Windows before I formatted the disk and set it up as a Linux only machine.<br>I did try the Fn + F10 combination before I asked the question.<br>To check the obvious I did an update on xorg.conf which made no difference.<br>I am not using "fglrx"<br>xorg.conf shows I have the ATI driver. This is what the relevant section of the file looks like::<br><br>Section "Device"<br> Identifier "ATI Technologies Inc Rage Mobility M4 AGP"<br> Driver "ati"<br> BusID "PCI:1:0:0"<br>EndSection<br><br>Section "Monitor"<br> Identifier "Generic Monitor"<br> Option "DPMS"<br>EndSection<br><br>Section
"Screen"<br> Identifier "Default Screen"<br> Device "ATI Technologies Inc Rage Mobility M4 AGP"<br> Monitor "Generic Monitor"<br> DefaultDepth 24<br> SubSection "Display"<br> Modes "1024x768"<br> EndSubSection<br>EndSection<br><br>Section "ServerLayout"<br> Identifier "Default Layout"<br> Screen "Default Screen"<br> InputDevice "Generic Keyboard"<br> InputDevice "Configured Mouse"<br><br>To answer Yvan's question; I would prefer to have the additional (LCD) display dual headed but right now I would settle for it just
working!<br>Any further suggestions would be appreciated.<br>Cliff<br><br>