ubuntuデスクトップでの今のxorg.conf

Section "Monitor"
        Identifier   "Configured Monitor"
EndSection

Section "Monitor"
        Identifier   "aticonfig-Monitor[0]-0"
        Option      "VendorName" "ATI Proprietary Driver"
        Option      "ModelName" "Generic Autodetecting Monitor"
        Option      "DPMS" "true"
EndSection

Section "Screen"
        Identifier "Default Screen"
        Device     "Configured Video Device"
        Monitor    "Configured Monitor"
        SubSection "Display"
                Virtual 2560 1024
        EndSubSection
EndSection

Section "Screen"
        Identifier "aticonfig-Screen[0]-0"
        Device     "aticonfig-Device[0]-0"
        Monitor    "aticonfig-Monitor[0]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Virtual 2560 1024
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier     "aticonfig Layout"
        Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Device"
        Identifier  "Configured Video Device"
EndSection

Section "Device"
        Identifier  "aticonfig-Device[0]-0"
        Driver      "ati"
        BusID       "PCI:2:0:0"
EndSection