I'm trying to set up my Mint 18.3, which runs on my HP EliteBook 8460p notebook, to use two external monitors. My notebook is connected to a docking station / port replicator that has three video ports: 1x VGA, 1x DisplayPort 1x DVI. The notebook itself has 1x VGA and 1x DisplayPort.
The two monitors are BenQ GL2450.
The assignment of the ports to monitors is as follows:
- HDMI1 -> DisplayPort of the docking station -> monitor 1
- HDMI2 -> DVI-Port of the docking station -> monitor 2
- HDMI3 -> DisplayPort of the notebook -> not in use
The system does support two simultaneously connected monitors, but their horizontal resolution has to be <= 3200 px (see the output below), so the first monitor can be used in the FHD mode with 1920x1080 px, but the second has to with 1280x720 px (1920 px + 1280 px = 3400 px).
When I open the Display-Tool I see following:
https://preview.ibb.co/mgaSty/Display_Tool.png
Here is the output of the ARandR, when the configuration is 1920 x 1080 + 1280 x 720:
https://image.ibb.co/gTxe6J/arandr.png
Here is the output of the ARandR, when the configuration is 1920 x 1080 + 1920 x 1080:
https://image.ibb.co/ebHe6J/arandr_3480x1080.png
You can see the borders of the "canvas" or "virtual display" (what's the proper word for that in terms of Xorg?), which are clearly too small for two FullHD monitors.
So the questions are:
- Is this a known bug? If yes, how to fix it / is there a workaround?
- Is there a way to configure Xorg to automatically adapt itself to any configuration of the monitors?
Code: Select all
$ xrandr
Screen 0: minimum 8 x 8, current 3200 x 1080, maximum 32767 x 32767
LVDS1 connected (normal left inverted right x axis y axis)
1366x768 60.10 + 40.07
1360x768 59.80 59.96
1280x720 60.00
1024x768 60.00
1024x576 60.00
960x540 60.00
800x600 60.32 56.25
864x486 60.00
640x480 59.94
720x405 60.00
680x384 60.00
640x360 60.00
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
HDMI1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 298mm
1920x1080 60.00*+ 50.00 59.94
1920x1080i 60.00 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 60.00
832x624 74.55
800x600 75.00 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
HDMI2 connected 1280x720+1920+360 (normal left inverted right x axis y axis) 531mm x 298mm
1920x1080 60.00 +
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1280x800 59.91
1152x864 75.00
1280x720 60.00*
1024x768 75.03 60.00
832x624 74.55
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
HDMI3 disconnected (normal left inverted right x axis y axis)
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)