NVIDIA BaseMosiac spanning games across all screens problem

[laykun]

I have searched the internet far and wide and I cannot find a solution to my problem. I have an NVIDIA surround setup across 3 screens (all same resolution) using something called BaseMosaic provided in the nvidia control panel. These run off two NVIDIA gpus in SLi, running Xinerama causes one screen to not be usable in the spanned desktop. I cannot for the life of me get a game to span across the 3 monitors in full screen mode as the fullscreen resolution of all 3 monitors is not reported to any single game I use, which is incredibly frustrating as this is the functionality available in windows.

I run Kubuntu 13.10 and nvidia binary 331.49 and here's my Xorg.conf.

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
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      "Samsung SyncMaster"
    HorizSync       30.0 - 81.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    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"
    BoardName      "GeForce GTX 670"
    BusID          "PCI:3:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 670"
    BusID          "PCI:4:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
#    Option         "nvidiaXineramaInfoOrder" "DFP-4"
    Option         "metamodes" "DVI-I-1: 1920x1200 +0+0, DVI-D-0: nvidia-auto-select +3840+0, DP-1: 1920x1200 +1920+0"
    Option         "SLI" "Mosaic"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "on"
    SubSection     "Display"
        Depth       24
        Virtual    5760 1200
    EndSubSection
EndSection

It seems to me like this was the automatic behaviour in the past and people have been fighting against it, but this is something I WANT and I imagine a lot of gamers used to nvidia surround/eyefinity expect as well.

[laykun]

Is anybody able to play their games across more than one monitor with the nvidia proprietary drivers?

[laykun]

Ok, for anyone that might stumble across this I have got a bit of solution working for me.

It only works for my games under wine but that's fine. I used a virtual wine desktop that spans all my monitors, then I use the KDE Windows behaviour to force the title bar to not show and force the window to the 0,0 position. All the games I'd play under windows triple screen work fine under ubuntu with triple screen, and the CSMT patch makes for very good performance.

For linux native games I have yet to find a solution though, I've tried a couple of different things but nothing really works out.