xrandr - problem with resolution of external monitor (opensuse leap 42.3)

Hi,
Can somebody help me … I’m trying to set-up external monitor (second one) on opensuse leap 42.3
My laptop screen is 3200x1800, my external monitor is 1920x1080, however, xrandr shows that external monitor has resolution: 1024x768.

How I can set-up normal resolution for my external monitor?
Here is an output from xrandr:

xrandr 
Screen 0: minimum 320 x 200, current 4224 x 1800, maximum 8192 x 8192
eDP-1 connected primary 3200x1800+0+0 (normal left inverted right x axis y axis) 294mm x 165mm                                                                                                                                   
   3200x1800     59.98*+  47.99                                                                                                                                                                                                  
   2048x1536     60.00                                                                                                                                                                                                           
   1920x1440     60.00                                                                                      
   1856x1392     60.01                                                                                      
   1792x1344     60.01                                                                                      
   1600x1200     60.00                                                                                      
   1400x1050     59.98                                                                                      
   1280x1024     60.02                                                                                      
   1280x960      60.00                                                                                      
   1024x768      60.04    60.00                                                                             
   960x720       60.00                                                                                      
   928x696       60.05                                                                                      
   896x672       60.01                                                                                      
   800x600       60.00    60.32    56.25                                                                    
   700x525       59.98                                                                                      
   640x512       60.02                                                                                      
   640x480       60.00    59.94                                                                             
   512x384       60.00                                                                                      
   400x300       60.32    56.34                                                                             
   320x240       60.05                                                                                      
DP-1 connected 1024x768+3200+0 (normal left inverted right x axis y axis) 0mm x 0mm                         
   1024x768      60.00*                                                                                     
   800x600       60.32    56.25                                                                             
   848x480       60.00  
   640x480       59.94  
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)


What’s the desktop environment used? Both KDE and GNOME have tools to configure multiple monitor setups.