$ cat /etc/X11/xorg.conf
Section "Device"
        Identifier      "Geode Device 0"
        Driver  "geode"
EndSection

Section "Monitor"
       Identifier "Inverted Monitor"
#      Option "Rotate" "normal"
#       Option "Rotate" "UD"
       Option "Rotate" "INVERT"
EndSection

Section "Screen"
        Identifier      "Geode Screen 0"
        Device  "Geode Device 0"
        Monitor "Inverted Monitor"
        DefaultDepth    24
        SubSection "Display"
                Depth   24
                Modes   "1024x768"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen  "Geode Screen 0"
EndSection