Linux multi-monitor support weirdness

[ptx0]

Hello there,

I run KDE on Ubuntu 20 and connected a 2ndary monitor. Linux thought it's the primary monitor, but I set up some scripts and configurations so that it is correct.

For example, my xrandr output shows:

Code: Select all

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm
   1920x1080     60.00*+  50.00    59.94    59.99  
   1600x1200     60.00  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1366x768      59.79  
   1280x800      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
HDMI-A-1 disconnected (normal left inverted right x axis y axis)
DVI-D-0 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 698mm x 393mm
   1920x1080     60.00 + 144.00*  119.98    99.93    59.94  
   1680x1050     59.88  
   1400x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      60.00  
   1152x864      75.00  
   1280x720      60.00    59.94  
   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    60.00    59.94  
   720x400       70.08  

DVI-D-0 shows "connected primary" at 144Hz, which is the correct setup.

Screenshot_20220102_151437.png (38.23 KiB) Viewed 935 times

my KDE display config applet also shows the rightmost monitor as the primary one.

However, Factorio starts up on the left display (Screen 2):

Screenshot_20220102_151524.png (104.33 KiB) Viewed 935 times

so this is odd, I'm wondering how Factorio gets this information? not asking for it to be fixed, though if it can get the correct info from libxrandr that would probably fix the problem.

[mrmelon54]

Unfortunately, I have the same issue. Would love to see a fix for this.

[Rseding91]

The fix is to select the other display as the one to use in display settings and then the game will use that one during startup.