Thinkpad W520 TwinView under Linux Debian Wheezy (Mint LMDE)

[zoldar]

Hi all,

I've run into problems when trying to setup a dual monitor display on my ThinkPad W520. Until now I was running on nouveau drivers (graphics are set to discrete under BIOS). The only significant problem I had was that from time to time when I've tried plugging external monitor through DisplayPort, the system freezed until I pulled the cable - then it came back to normal in a moment. For that reason, I've tried switching to binary drivers - that change in turn forced me to create an xorg.conf in order to explicitly configure display and input devices. From now on, I can't make the external monitor work. And even if I do, it stubbornly switches to ultra low resolution (like 640x480). I've tried various metamodes, explicitly declared monitor's horiz/vert sync - to no avail.

For reference - my external display is Samsung SyncMaster 214T and I'm plugging it in through DP <-> DVI adapter.

My current xorg.conf is pasted below:

Code: Select all

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

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

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

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       28.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    Option         "RegistryDwords" "EnableBrightnessControl=1"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
    Option             "TwinView"
    Option             "MetaModes" "1600x1200,1920x1080"
    Option     "SecondMonitorHorizSync"   "30-81"
    Option     "SecondMonitorVertRefresh" "56-75"
EndSection

Any help and or feedback on alternative methods to achieve what I want are welcome. Thanks in advance.

Adrian