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Thread: Yet another radeonhd dualhead thread

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  1. #1
    Join Date
    Feb 2007
    Posts
    83

    Default Yet another radeonhd dualhead thread

    Hi,

    having some problems setting up dualhead with radeonhd.

    ATI Radeon HD3850 PCI-E

    24" LG Flatron 1920x1200 <-- main monitor
    20" Samsung SM206BW <-- extended

    Kernel 2.6.30rc4 from here
    xserver-xorg-video-radeonhd 1.2.5+git from here

    Kubuntu 9.04

    xorg.conf

    Code:
    Section "Monitor"
            Identifier      "Flatron"
            ModeLine        "1920x1200" 154.0 1920  1968  2000 2080 1200 1203 1209 1235
            Option          "PreferredMode" "1920x1200"
            Option          "DPMS"
            #Option         "RightOf" "Samsung"
            DisplaySize     508 317 #dpi 96
    EndSection
    
    Section "Monitor"
            Identifier      "Samsung"
            ModeLine        "1680x1050" 119.0 1680 1728 1760 1840 1050 1053 1059 1080
            Option          "PreferredMode" "1680x1050"
            Option          "DPMS"
            Option          "RightOf" "Flatron"
            DisplaySize     444 277 #dpi 96
    EndSection
    
    Section "Device"
            Identifier      "ATI Radeon HD3850"
            Driver          "radeonhd"
            Option          "AccelMethod" "exa"
            Option          "DRI" "on"
            Option          "Monitor-DVI-0" "Flatron"
            Option          "Monitor-HDMI-0"  "Samsung"
    EndSection
    
    Section "Screen"
            Identifier      "Default Screen"
            Monitor         "Flatron"
            #Monitor                "Samsung"
            Device          "ATI Radeon HD3850"
            SubSection "Display"
                    Depth 24
                    Virtual 3600 1200
            EndSubSection
    EndSection
    
    Section "ServerFlags"
            Option  "DontZap"       "True"
    EndSection
    Output from xrandr

    Code:
    Screen 0: minimum 320 x 200, current 3600 x 1200, maximum 3600 x 1200
    DVI-I_1/digital connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
       1920x1200      60.0*+
       1600x1200      60.0     59.9
       1680x1050      59.9
       1280x1024      74.9     75.0     59.9
       1280x960       74.9
       1024x768       75.1     60.0
       800x600        75.0     60.3
       640x480        75.0     60.0
       720x400        70.1
    DVI-I_1/analog disconnected (normal left inverted right x axis y axis)
    TV_7PIN_DIN disconnected (normal left inverted right x axis y axis)
    DVI-I_2/digital connected 1680x1050+1920+0 (normal left inverted right x axis y axis) 433mm x 271mm
       1680x1050      59.9*+
       1280x1024      75.0     59.9
       1280x960       59.9
       1152x864       75.0     74.9
       1024x768       75.1     70.1     60.0
       832x624        74.6
       800x600        72.2     75.0     60.3     56.2
       640x480        75.0     72.8     66.7     60.0
       720x400        70.1
    DVI-I_2/analog disconnected (normal left inverted right x axis y axis)
    When I bootup both monitors have 1680x1050 resolution and monitors are in clone mode (both show same picture) but when I run the commands

    Code:
    xrandr --output DVI-I_1/digital --left-of DVI-I_2/digital
    xrandr --output DVI-I_1/digital --mode 1920x1200
    xrandr --output DVI-I_1/digital --left-of DVI-I_2/digital
    dualhead works... What do I add to xorg.conf so I dont have to run commands everytime I login?
    Last edited by conholster; 05-06-2009 at 01:21 AM.

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