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Dual nVidia GPUs (3 monitors) not working in 11.10

rated 0 times [ 1] [ 0] / answers: 1 / hits: 5535 / 1 Year ago, mon, february 20, 2023, 11:15:27

after searching I have not found a solution.

I have 2 nvidia quadro 295 cards with 3 monitors but I can not extend twinview across multiple GPUs.

I have the most recent nvidia proprietary drivers installed, and they work fine for the single GPU / dual monitors. I tried using xinerama, but without success.

I don't mind switching to the nouveau drivers if that would handle my multiple monitors, although I would like to continue to use unity and compiz if i can).

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3 Years ago

answered 1 Year ago sertold · Accepted Answer

i was able to get this working thanks to a coworker. here is my xorg.conf file. this required gnome2 and the proprietary nvidia drivers.

Section "ServerLayout"

    Identifier     "Layout0"

    Screen      0  "Screen0" 0 0

    Screen      1  "Screen1" RightOf "Screen0"

    Screen      2  "Screen2" RightOf "Screen1"

    InputDevice    "Keyboard0" "CoreKeyboard"

    InputDevice    "Mouse0" "CorePointer"

    Option         "Xinerama" "1"

EndSection



Section "InputDevice"

    Identifier     "Mouse0"

    Driver         "mouse"

    Option         "Protocol" "auto"

    Option         "Device" "/dev/psaux"

    Option         "Emulate3Buttons" "no"

    Option         "ZAxisMapping" "4 5"

EndSection



Section "Files"

EndSection



Section "Module"

    Load "glx"

EndSection



Section "Extensions"

    Option "Composite" "Disable"

EndSection



Section "InputDevice"

    Identifier     "Keyboard0"

    Driver         "kbd"

EndSection



Section "Monitor"

    Identifier     "Monitor0"

    VendorName     "Unknown"

    ModelName      "HP w2207"

    HorizSync       24.0 - 82.0

    VertRefresh     48.0 - 76.0

    Option         "DPMS"

EndSection



Section "Monitor"

    Identifier     "Monitor1"

    VendorName     "Unknown"

    ModelName      "HP w2207"

    HorizSync       24.0 - 82.0

    VertRefresh     48.0 - 76.0

    Option         "DPMS"

EndSection



Section "Monitor"

    Identifier     "Monitor2"

    VendorName     "Unknown"

    ModelName      "HP w2207"

    HorizSync       24.0 - 82.0

    VertRefresh     48.0 - 76.0

    Option         "DPMS"

EndSection



Section "Device"

    Identifier     "Device0"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BoardName      "Quadro NVS 295"

    BusID          "PCI:2:0:0"

    Screen          0

    Option         "Rotate" "CCW"

EndSection



Section "Device"

    Identifier     "Device1"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BoardName      "Quadro NVS 295"

    BusID          "PCI:2:0:0"

    Screen          1

    Option         "Rotate" "CCW"

EndSection



Section "Device"

    Identifier     "Device2"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BoardName      "Quadro NVS 295"

    BusID          "PCI:3:0:0"

    Option         "Rotate" "CCW"

    Screen          0

EndSection



Section "Screen"

    Identifier     "Screen0"

    Device         "Device0"

    Monitor        "Monitor0"

    DefaultDepth    24

    Option         "TwinView" "0"

    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0"

    SubSection     "Display"

        Depth       24

    EndSubSection

EndSection





Section "Screen"

    Identifier     "Screen1"

    Device         "Device1"

    Monitor        "Monitor1"

    DefaultDepth    24

    Option         "TwinView" "0"

    Option         "metamodes" "DFP-1: nvidia-auto-select +0+0"

    SubSection     "Display"

        Depth       24

    EndSubSection

EndSection



Section "Screen"

    Identifier     "Screen2"

    Device         "Device2"

    Monitor        "Monitor2"

    DefaultDepth    24

    Option         "TwinView" "0"

    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0"

    SubSection     "Display"

        Depth       24

    EndSubSection

EndSection