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I use Kubuntu 12.04 64 bit. Currently using the nvidia drivers for my Dell E6510.

When the laptop is docked the two multiple monitors are working perfectly. When I restart when I am undocked the laptop display works fine until I log in to kde. Then the screen goes blank and never returns.

I assume this is an issue with xorg.conf (which I provide below). I have tried using the system without the xorg but it looks terrible and the multiple monitor settings don't work in the default KDE display GUI.

Ideally I would like to be able to undock and dock the machine and for the monitors to behave appropriately. But for now I would be grateful to use my laptop even on a restart when it is undocked.

Below is my xorg.conf:

Section "Monitor"
        Identifier     "Monitor0"
        VendorName     "Unknown"
        ModelName      "Samsung SyncMaster"
        HorizSync       30.0 - 81.0
        VertRefresh     56.0 - 60.0
        Option         "DPMS"
        # HorizSync source: edid, VertRefresh source: edid
EndSection

Section "Screen"
        Identifier     "Screen0"
        Device         "Device0"
        Monitor        "Monitor0"
        DefaultDepth    24
        Option         "Stereo" "0"
        Option         "nvidiaXineramaInfoOrder" "DFP-0"
        Option         "metamodes" "DP-0: nvidia-auto-select +0+0, DP-1: nvidia-auto-select +1920+0"
        Option         "SLI" "Off"
        Option         "MultiGPU" "Off"
        Option         "BaseMosaic" "off"
        SubSection "Display"
                Depth       24
        EndSubSection
EndSection

Section "InputDevice"
        Identifier     "Mouse0"
        Driver         "mouse"
        Option         "Protocol" "auto"
        Option         "Device" "/dev/psaux"
        Option         "Emulate3Buttons" "no"
        Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
        Identifier     "Keyboard0"
        Driver         "kbd"
        # generated from default
EndSection

Section "ServerLayout"
        Identifier     "Layout0"
        Screen      0  "Screen0" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
        InputDevice    "Mouse0" "CorePointer"
        Option         "Xinerama" "0"
EndSection

Section "Device"
        Identifier     "Device0"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "NVS 3100M"
        Option  "NoLogo"        "True"
EndSection
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