xorg.conf

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 970"
    BusID          "PCI:1:0:0"
    Option         "Coolbits" "28"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1060 6GB"
    BusID          "PCI:2:0:0"
    Option         "Coolbits" "28"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "LG"
    ModelName      "LG ULTRAWIDE"
    HorizSync      30.0 - 90.0
    VertRefresh    56.0 - 75.0
    Option         "ExactModeTimingsDVI"            "True"
    Option         "DPI" "81 x 80"
    Option         "DPMS"                           "False"
    ModeLine       "2560x1080" 165 2560 2624 2688 2784 1080 1083 1093 1111 +hsync +vsync
    Option         "Position" "0 0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    Option         "UseDisplayDevice" "Monitor0"
    DefaultDepth    24
    Option         "AllowEmptyInitialConfiguration" "True"
    Option         "Coolbits" "28"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    Option         "UseDisplayDevice" "Monitor1"
    DefaultDepth    24
    Option         "AllowEmptyInitialConfiguration" "True"
    Option         "Coolbits" "28"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "ServerLayout"
    Identifier     "Layout0"
    Screen         "Screen0"
    Screen         "Screen1"
EndSection