$ DISPLAY=:0.0 xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
LVDS1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
   1920x1080     60.01*+  40.01
   1400x1050     59.98
   1280x1024     60.02
   1280x960      60.00
   1024x768      60.00
   800x600       60.32    56.25
   640x480       59.94
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

$ DISPLAY=:8.0 xrandr
Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 16384 x 16384
HDMI-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200     59.95*+
   1920x1080     60.00
   1680x1050     59.95
   1600x1200     60.00
   1280x1024     60.02
   1280x960      60.00
   1024x768      60.00
   800x600       60.32
   640x480       59.94

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "nvidia" 0 0
EndSection

Section "Device"
    Identifier "nvidia"
    Driver "nvidia"
    BusID  "PCI:1:0:0"
    Option          "PrimaryMonitor"            "LVDS"
    Option          "UseDisplayDevice"          "LVDS, DFP-0"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
    SubSection     "Display"
        Modes      "nvidia-auto-select"
    EndSubSection
EndSection

Section "Monitor"
    Identifier  "DFP-0"
     Option "Primary" "true"
   Option      "RightOf"    "LVDS"
  Option "DPMS"
EndSection