Hi,

I just upgraded Neon to KDE 5.18.4 and now my secondary display stopped working. It is recognized by the OS for it works at boot and I can use the login screen too so it must be something not driver related but still the KDE display settings show only my laptop screen. I'm using a HDMI > VGA converter for the secondary display, don't know if that can have anything to do with it.. Anyone any ideas on how to debug this?

Code: Select all

xrandr -q
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 16384 x 16384
eDP-1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 256mm x 144mm
   1366x768      60.02*+
   1360x768      59.80    59.96 
   1280x720      60.00    59.99    59.86    59.74 
   1024x768      60.04    60.00 
   960x720       60.00 
   928x696       60.05 
   896x672       60.01 
   1024x576      59.95    59.96    59.90    59.82 
   960x600       59.93    60.00 
   960x540       59.96    59.99    59.63    59.82 
   800x600       60.00    60.32    56.25 
   840x525       60.01    59.88 
   864x486       59.92    59.57 
   800x512       60.17 
   700x525       59.98 
   800x450       59.95    59.82 
   640x512       60.02 
   720x450       59.89 
   700x450       59.96    59.88 
   640x480       60.00    59.94 
   720x405       59.51    58.99 
   684x384       59.88    59.85 
   680x384       59.80    59.96 
   640x400       59.88    59.98 
   576x432       60.06 
   640x360       59.86    59.83    59.84    59.32 
   512x384       60.00 
   512x288       60.00    59.92 
   480x270       59.63    59.82 
   400x300       60.32    56.34 
   432x243       59.92    59.57 
   320x240       60.05 
   360x202       59.51    59.13 
   320x180       59.84    59.32 
HDMI-1 connected (normal left inverted right x axis y axis)
   1366x768      59.79 +
   1920x1080     60.00    59.94 
   1280x800      59.91 
   1280x720      60.00    59.94 
   1024x768      75.03    70.07    60.00 
   832x624       74.55 
   800x600       72.19    75.00    60.32    56.25 
   720x480       60.00    59.94 
   640x480       75.00    72.81    66.67    60.00    59.94 
   720x400       70.08 


xrandr does recognize the screen so I guess its something simple but what??

Nevermind, I solved it.
Appearantly the monitor was set to disabled so I had to select the device from a dropdown menu in the settings dialog first to have it show up again in the main view..