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KRTac

Member

From: Croatia

Registered: 2008-07-01

Posts: 99

Xorg setup for three monitors

I'm trying to configure X to run three monitors, but I can't seem to figure it out.

I use a i5 6600 processor and have the monitors connected to the integrated graphics (Intel HD Graphics 530). The main monitor is on the far left (1920x1200), the secont monitor is next to it (1680x1050) and the third is a tv on the far right (1920x1080). The TV isn't actually right next to the two main monitors, but that's not relevant.

RandR reports this:

$ xrandr
Screen 0: minimum 8 x 8, current 5280 x 1200, maximum 32767 x 32767
DP1 connected 1680x1050+1920+150 (normal left inverted right x axis y axis) 440mm x 300mm
   1680x1050     59.88*+
...
HDMI1 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 520mm x 320mm
   1920x1200     59.95 +
   1920x1080     60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
...
HDMI2 connected 1680x1050+3600+120 (normal left inverted right x axis y axis) 890mm x 500mm
   1920x1080     60.00 +  50.00    59.94    30.00    25.00    24.00    29.97    23.98
   1920x1080i    60.00    50.00    59.94
....
HDMI3 disconnected (normal left inverted right x axis y axis)                                                                                                         
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

The first problem is the resolutions used. The main monitor and the TV don't use their native resolutions.

/etc/X11/xorg.conf.d/10-monitor.conf
Section "Monitor" # Main monitor
  Identifier "U2415"
  Option "Position" "0 0"
  Option "DPMS" "true"
EndSection

Section "Monitor" # Second monitor
  Identifier "2243NW"
  Option "Position" "1920 150"
  Option "DPMS" "true"
EndSection

Section "Monitor"
  Identifier "TV"
  Option "Position" "3600 120"
  Option "DPMS" "true"
EndSection

Section "Screen"
  Identifier "Screen0"
  Device "Intel"
  Monitor "U2415"
  DefaultDepth 24
  SubSection "Display"
    Depth 24
    Virtual 5520 1200
  EndSubSection
EndSection

/etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
        Identifier      "Intel"
        Driver          "intel"
        Option          "AccelMethod"           "sna"
        Option          "Monitor-HDMI1"         "U2415"
        Option          "Monitor-HDMI2"         "TV"
        Option          "Monitor-DP1"           "2243NW"
EndSection

With this setup I get a picture on all three monitors, but the main monitor is the secont monitor. The TV is right next to the second monitor as it should be and I can move windows to it and it works as expected. The first monitor gets some output also, but I can't access it with the mouse. As if it's not connected to the main display. But when I go to shutdown, the confirmation window apears on that monitor. I can't get to it with my mouse, but pressing enter on the keyboard works.

The resolution problem isn't bothering me so much for now. I would like to first get the correct layout. Maybe the resolutions will be correct after that.

Last edited by KRTac (2016-08-23 22:39:30)