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Thread: How to get highest resolution on external display automatically? (radeon driver)

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  1. #1
    Join Date
    Sep 2009

    Default How to get highest resolution on external display automatically? (radeon driver)


    After the hint to use the free radeon driver instead of a half working fglrx I got another problem I can't solve:
    I'm using a Thinkpad T60 with Debian testing and KDE. If it's on its docking station and I start it I never get the correct resolution on the external display automatically. With fglrx the laptop display was turned off and the resolution was set to 1900x1200 on the external display. Now the internal LCD isn't turned off and the resolution is set to 1280x960 on both displays. When I go into "System Settings" -> "Display", the resolution is set to 1900x1200 directly on the external display but it's a bit annoying to do that after every boot. How can I get the behaviour I had with the fglrx (internal LCD off, resolution to max on the external one)?

    My xorg.conf:
    Section "Device"
            Identifier      "Configured Video Device"
            Option          "UseFBDev"              "true"
    Section "DRI"
            Mode         0666
    Section "ServerLayout"
            Identifier     "Builtin Default Layout"
            Screen      0  "aticonfig-Screen[0]-0" 0 0
    Section "Module"
            SubSection  "extmod"
              Option  "omit xfree86-dga"
            Load  "dbe"
            Load  "GLcore"
            Load  "freetype"
            Load  "record"
            Load  "dri"
    Section "Monitor"
            Identifier   "aticonfig-Monitor[0]-0"
            Option      "VendorName" "ATI Proprietary Driver"
            Option      "ModelName" "Generic Autodetecting Monitor"
            Option      "DPMS" "true"
    Section "Device"
            Driver          "radeon"
            VendorName      "ATI Technologies Inc"
            BoardName       "Radeon X1400"
            Identifier      "X1400"
            BusID           "PCI:1:0:0"
            Option          "UseInternalAGPGART" "no"
            Option          "MonitorLayout"         "TDMS, LVDS"
            Option          "DynamicClocks"         "on"
    Section "Screen"
            Identifier "aticonfig-Screen[0]-0"
            Device     "X1400"
            Monitor    "aticonfig-Monitor[0]-0"
            DefaultDepth 24
            SubSection "Display"
                    Modes "1900x1200" "1400x1050" "1280x1024"
                    Viewport   0 0
                    Depth     24
    Section "Extensions"
            Option  "Composite"     "1"
    Last edited by moritz; 09-14-2009 at 05:20 AM.

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