Section "Device" Identifier "Configured Video Device" BusID "PCI:0:9:0" Driver "vesa" EndSection Section "Device" Identifier "Configured Device 2" BusID "PCI:1:0:0" Driver "vesa" EndSection Section "Monitor" Identifier "Configured Monitor" EndSection Section "Monitor" Identifier "Configured Monitor 2" EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" EndSection Section "Screen" Identifier "Default Screen 2" Monitor "Configured Monitor 2" Device "Configured Device 2" EndSection Section "ServerLayout" Identifier "Layout" Screen 0 "Default Screen" 0 0 #If I uncomment this next line, it breaks. But I can set either #Default Screen or "Default Screen 2" above without problems #If I only want a single display. #Screen 1 "Default Screen 2" RightOf "Default Screen" EndSection