Dell Optiplex GX620 ATI Radeon X600 - Ubuntu 7.10 Dual Screen

This post is for those that have a Dell Optiplex GX620 with the ATI Radeon X600 graphics card and molex dual monitor splitter. If you want to have true dual monitor use instead of the mirrored screen setup that Ubuntu 7.10 defaults to, make sure that the proprietary ATI driver is installed and enabled via the Restricted Drivers Manager.

Reboot the machine after the driver is installed and make a copy of your xorg.conf file.

$ sudo cp /etc/X11/xorg.conf xorg.conf.bak

Then copy the text below into a file and name it xorg.conf

Section "ServerLayout"
Identifier     "Default Layout"
Screen      0  "aticonfig-Screen[0]" 0 0
InputDevice    "Generic Keyboard"
InputDevice    "Configured Mouse"
InputDevice    "stylus" "SendCoreEvents"
InputDevice    "cursor" "SendCoreEvents"
InputDevice    "eraser" "SendCoreEvents"
EndSection

Section "Files"

# path to defoma fonts
FontPath     "/usr/share/fonts/X11/misc"
FontPath     "/usr/share/fonts/X11/cyrillic"
FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath     "/usr/share/fonts/X11/Type1"
FontPath     "/usr/share/fonts/X11/100dpi"
FontPath     "/usr/share/fonts/X11/75dpi"
FontPath     "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
Load  "i2c"
Load  "bitmap"
Load  "ddc"
Load  "dri"
Load  "extmod"
Load  "freetype"
Load  "glx"
Load  "int10"
Load  "vbe"
EndSection

Section "ServerFlags"
Option     "AIGLX" "off"
EndSection

Section "InputDevice"
Identifier  "Generic Keyboard"
Driver      "kbd"
Option     "CoreKeyboard"
Option     "XkbRules" "xorg"
Option     "XkbModel" "pc105"
Option     "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier  "Configured Mouse"
Driver      "mouse"
Option     "CorePointer"
Option     "Device" "/dev/input/mice"
Option     "Protocol" "ImPS/2"
Option     "ZAxisMapping" "4 5"
Option     "Emulate3Buttons" "true"
EndSection

Section "InputDevice"
Identifier  "stylus"
Driver      "wacom"
Option     "Device" "/dev/input/wacom"
Option     "Type" "stylus"
Option     "ForceDevice" "ISDV4"  # Tablet PC ONLY
EndSection

Section "InputDevice"
Identifier  "eraser"
Driver      "wacom"
Option     "Device" "/dev/input/wacom"
Option     "Type" "eraser"
Option     "ForceDevice" "ISDV4"  # Tablet PC ONLY
EndSection

Section "InputDevice"
Identifier  "cursor"
Driver      "wacom"
Option     "Device" "/dev/input/wacom"
Option     "Type" "cursor"
Option     "ForceDevice" "ISDV4"  # Tablet PC ONLY
EndSection

Section "Monitor"
Identifier   "Generic Monitor"
HorizSync    28.0 - 57.0
VertRefresh  43.0 - 60.0
Option     "DPMS"
EndSection

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

Section "Monitor"
Identifier   "aticonfig-Monitor[1]"
Option     "VendorName" "ATI Proprietary Driver"
Option     "ModelName" "Generic Autodetecting Monitor"
Option     "DPMS" "true"
EndSection

Section "Device"
Identifier  "ATI Technologies Inc RV380 [Radeon X600 (PCIE)]"
Driver      "ati"
Option     "MonitorLayout" "LCD, CRT"
Option     "CRT2Position" "RightOf"
Option     "MetaModes" "1024x768-1024x768"
# Option     "MergedXinerama" "on"
Option     "MergedNonRectangular" "true"
Option     "MergedFB" "true"
BusID       "PCI:1:0:0"
Option "RenderAccel" "true"
EndSection

Section "Device"
Identifier  "aticonfig-Device[0]"
Driver      "fglrx"
Option     "DesktopSetup" "horizontal"
Option     "OverlayOnCRTC2" "1"
Option     "VideoOverlay" "on"
Option     "OpenGLOverlay" "off"
BusID       "PCI:1:0:0"
Option "AddARGBGLXVisuals" "True"
Option "RenderAccel" "true"
EndSection

Section "Device"
Identifier  "aticonfig-Device[1]"
Driver      "fglrx"
BusID       "PCI:1:0:0"
Screen      1
Option "AddARGBGLXVisuals" "True"
Option "RenderAccel" "true"
EndSection

Section "Screen"
Identifier "Default Screen"
Device     "ATI Technologies Inc RV380 [Radeon X600 (PCIE)]"
Monitor    "Generic Monitor"
DefaultDepth     24
SubSection "Display"
 Depth     1
 Modes    "1152x864" "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
 Depth     4
 Modes    "1152x864" "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
 Depth     8
 Modes    "1152x864" "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
 Depth     15
 Modes    "1152x864" "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
 Depth     16
 Modes    "1152x864" "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
 Depth     24
 Modes    "1280x1024" "1152x864" "1024x768" "800x600" "720x400" "640x480"
EndSubSection
EndSection

Section "Screen"
Identifier "aticonfig-Screen[0]"
Device     "aticonfig-Device[0]"
Monitor    "aticonfig-Monitor[0]"
DefaultDepth     24
SubSection "Display"
 Viewport   0 0
 Depth     24
 Modes    "1280x1024" "1024x768"
EndSubSection
EndSection

Section "Screen"
Identifier "aticonfig-Screen[1]"
Device     "aticonfig-Device[1]"
Monitor    "aticonfig-Monitor[1]"
DefaultDepth     24
SubSection "Display"
 Viewport   0 0
 Depth     24
EndSubSection
EndSection

Section "DRI"
Mode         0666
EndSection

Section "Extensions"
Option     "Composite"

EndSection

Then copy the new xorg.conf file you just made into your /etc/X11 folder.

$ sudo cp /home/your_username/Desktop/xorg.conf /etc/X11/xorg.conf

Reboot the machine again and you should be golden.

Hope this helps out. If you have any questions, leave me a comment.

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