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I have two screens and getting both detected is some kind of luck.

My computer has 1 VGA out, 2 DP out, and 1 HDMI out. However I have only 2 VGA cables and an HDMI to VGA adapter. The pure VGA works fine, however the HDMI out (with adapter) sometimes stops working after a reboot. But I can not precisely reproduce, when it stops.

This is what xrandr says witch does not make any sense to m. Why does it say that DP-3 is connected when it just isn't.

$ xrandr 
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
HDMI-1 disconnected primary (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-3 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024     60.02*+  75.02  
   1280x960      60.00  
   1152x864      75.00  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   640x480       75.00    72.81    66.67    59.94  
   720x400       70.08  

I use Lubuntu 17.04.

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  • what graphics driver are you using? nouveau doesn't really support multiple screens, so you should try to use proprietary drivers
    – Fl.pf.
    Jun 9, 2017 at 10:25
  • Intel drivers. Sorry, i forgot to mark the problem as solved, but it solved itself so I don't konw how. :(
    – user359700
    Jun 12, 2017 at 8:59
  • Should I flag this question as Cannot Reproduce? Nov 18, 2021 at 7:26

1 Answer 1

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The problem solved itself so I don't know how. :(

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