arena screen not detected

[uni-bar]

try out some of the following actions:

• unplug and plug the screen again

• if there are two screens follow this

• check the label of the screen as it is recognized by the system: DISPLAY=:0 xrandr -q
  it will print all the found screen. e.g.:

      Screen 0: minimum 8 x 8, current 8 x 8, maximum 32767 x 32767
               HDMI-0 connected primary (normal left inverted right x axis y axis)
                  1920x1080     60.00 +  59.94    50.00  
                  1600x900      60.00  
                  1280x1024     75.02    60.02  
                  1280x800      59.81  
                  1280x720      60.00    59.94    50.00  
                  1152x864      75.00  
                  1024x768      75.03    60.00  
                  800x600       75.00    60.32  
                  720x576       50.00  
                  720x480       59.94  
                  640x480       75.00    59.94    59.93  
               DP-0 disconnected (normal left inverted right x axis y axis)
               DP-1 disconnected (normal left inverted right x axis y axis)
               DP-2 disconnected (normal left inverted right x axis y axis)
               DP-3 disconnected (normal left inverted right x axis y axis)
  

  take the label where it is connected (say, HDMI-0 here) and make sure it is the .env file under APP_DISPLAY
  APP_DISPLAY= 'HDMI-0'

• restart the pc