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#1 2009-04-02 11:21:42

Wra!th
Member
Registered: 2009-03-31
Posts: 342

Configuring Dual Monitors

I have an Asus laptop with a x1600 ATI Mobility Card.
My laptop backlight is broken so I can't really see anything on it, so I use a normal CRT monitor as output (the card has a VGA out).
With my old xorg.conf I get "cloning" (I see the same thing on both monitors) since I had not configured as dualmonitors.
Now I'm trying to do that (waiting to get the backlight fixed and would like to have this setup by then).
After some frankenstein-like configuration (mixed old one with something I found on the net) I came up with this:

Section "Files"
        ModulePath   "/usr/lib/xorg/modules"
        FontPath     "/usr/share/fonts/misc:unscaled"
        FontPath     "/usr/share/fonts/misc"
        FontPath     "/usr/share/fonts/75dpi:unscaled"
        FontPath     "/usr/share/fonts/75dpi"
        FontPath     "/usr/share/fonts/100dpi:unscaled"
        FontPath     "/usr/share/fonts/100dpi"
        FontPath     "/usr/share/fonts/PEX"
        FontPath     "/usr/share/fonts/cyrillic"
        FontPath     "/usr/share/fonts/Type1"
        FontPath     "/usr/share/fonts/TTF"
        FontPath     "/usr/share/fonts/ttf/western"
        FontPath     "/usr/share/fonts/ttf/decoratives"
        FontPath     "/usr/share/fonts/truetype"
        FontPath     "/usr/share/fonts/truetype/openoffice"
        FontPath     "/usr/share/fonts/truetype/ttf-bitstream-vera"
        FontPath     "/usr/share/fonts/latex-ttf-fonts"
        FontPath     "/usr/share/fonts/defoma/CID"
        FontPath     "/usr/share/fonts/defoma/TrueType"
        FontPath     "/usr/share/fonts/defoma/local"
        FontPath     "/usr/share/fonts/local"
EndSection


Section "Module"
    Load "dri"
    Load "dbe"
    Load "extmod"
    Load "GLcore"
    Load "glx"
    Load "bitmap"
    Load "freetype"
EndSection

Section "InputDevice"
    Identifier "Keyboard0"
    Driver "keyboard"
    Option "CoreKeyboard"
    Option "XkbRules" "xorg"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "us"
    Option "XkbVariant" ""
EndSection
Section "InputDevice"
        Identifier  "Serial Mouse"
        Driver      "mouse"
        Option      "Protocol" "Microsoft"
        Option      "Device" "/dev/ttyS0"
        Option      "Emulate3Buttons" "true"
        Option      "Emulate3Timeout" "70"
        Option      "SendCoreEvents"  "true"
EndSection

Section "InputDevice"
        Identifier  "PS/2 Mouse"
        Driver      "mouse"
        Option      "Protocol" "auto"
        Option      "ZAxisMapping"          "4 5"
        Option      "Device" "/dev/psaux"
        Option      "Emulate3Buttons" "true"
        Option      "Emulate3Timeout" "70"
        Option      "SendCoreEvents"  "true"
EndSection
Section "InputDevice"
        Identifier      "USB Mouse"
        Driver          "mouse"
        Option          "Device"                "/dev/input/mice"
        Option          "SendCoreEvents"        "true"
        Option          "Protocol"              "IMPS/2"
        Option          "ZAxisMapping"          "4 5"
        Option          "Buttons"               "5"
EndSection


Section "Device"
    Identifier "0 ATI Technologies"
    Driver "radeonhd"
    Screen 0
EndSection

Section "Device"
    Identifier "1 ATI Technologies"
    Driver "radeonhd"
    Screen 1
EndSection

Section "Monitor"
    Identifier "Laptop Monitor"
    Option "DPMS"
EndSection

Section "Monitor"
    Identifier "CRT Monitor"
    Option "DPMS"
EndSection

Section "Screen"
    Identifier "Laptop Screen"
    Device "0 ATI Technologies"
    Monitor "Laptop Monitor"
    Defaultdepth 24
    SubSection "Display"
        Depth 24
        Modes "1280×800" "1024x768"
    EndSubSection
EndSection

Section "Screen"
    Identifier "CRT Screen"
    Device "1 ATI Technologies"
    Monitor "CRT Monitor"
    Defaultdepth 24
    SubSection "Display"
        Depth 24
        Modes "1280x1024" "1024x768"
    EndSubSection
EndSection

Section "ServerLayout"
    Identifier "Default Layout"
    Screen 0 "Laptop Screen" 0 0
    Screen 1 "CRT Screen" RightOf "Laptop Screen"
    Option "DualHead" "true"
    InputDevice "Keyboard0" "CoreKeyboard"
    InputDevice "USB Mouse" "CorePointer"
EndSection

X starts but since I can't actually check if it worked ok (can't see anything on laptop LCD) I used `xrandr -q`, and the output was

[ ~ ]-[$] > xrandr -q
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2560 x 2560
VGA_1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 338mm x 270mm
   1280x1024      60.0*+   75.0     59.9     60.0* 
   1400x1050      60.0  
   1440x900       59.9  
   1280x960       60.0  
   1360x768       59.8  
   1152x864       75.0     75.0     70.0     60.0  
   1024x768       74.9     75.1     75.0     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     74.9     60.3     56.2  
   640x480        75.0     72.8     75.0     74.4     60.0     59.9  
   720x400        70.1  
PANEL connected 1280x1024+0+0 (normal left inverted right x axis y axis) 338mm x 211mm
   1280x800       60.0 +
   2560x2048Scaled   60.5  
   2560x1600Scaled   60.5  
   2048x1536      60.0  
   2048x1536Scaled   60.5  
   1920x1440      60.0  
   1856x1392      60.0  
   1792x1344      60.0  
   1920x1200Scaled   60.4  
   1920x1080Scaled   60.5  
   1600x1200      60.0  
   1600x1200Scaled   60.4  
   1680x1050      60.0  
   1680x1050Scaled   60.3  
   1600x1024      60.2  
   1400x1050      60.0  
   1400x1050Scaled   60.3  
   1440x960Scaled   60.4  
   1280x1024      60.0  
   1280x1024Scaled   60.5* 
   1440x900       59.9  
   1280x960       60.0  
   1280x960Scaled   60.4  
   1280x854Scaled   60.4  
   1360x768       59.8  
   1152x864       60.0  
   1280x720Scaled   60.4  
   1152x768Scaled   60.3  
   1024x768       60.0  
   1024x768Scaled   60.4  
   800x600        60.3     56.2  
   800x600Scaled   60.3  
   768x576Scaled   60.4  
   854x480Scaled   59.8  
   720x480Scaled   59.8  
   640x480        59.9  
   640x480Scaled   60.1  
   320x240Scaled   57.6  
   320x200Scaled   55.7  
TV_SVIDEO disconnected (normal left inverted right x axis y axis)

Not much of an expert but I'm assuming both LCD and CRT monitors have the same resolution, and "cloning" is still present.

Please help me setup a proper dual monitor environment. What am I doing wrong here?

Last edited by Wra!th (2009-04-02 11:23:46)


MacGregor DESPITE THEM!
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#2 2009-04-02 21:32:16

evilgold
Member
Registered: 2008-10-30
Posts: 120

Re: Configuring Dual Monitors

It does look like your still getting the same resolution there. This might not be the best solution but, I disconnected my laptops sreen after it broke, and it solved the similar problem i had.

Someone else might have a simpler solution though, if thats not your kind of thing.

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