[taciaka@LDZ9343N ~]$ cat monitors.sh 
#!/bin/bash

xrandr --output LVDS1 --off --output DP1 --off --output DP2 --off --verbose
xrandr --output DP1 --preferred --primary --pos 0x0 --output DP2 --pos 3520x0 --verbose
xrandr --output LVDS1 --preferred --pos 1600x0 --verbose


[taciaka@LDZ9343N ~]$ ./monitors.sh 
crtc 0: disable
crtc 1: disable
screen 0: 8x8 2x2 mm 101.60dpi
screen 0: 1920x1080 480x270 mm 101.60dpi
crtc 0:    1920x1080  60.00 +0+0 "DP1"
screen 0: 3200x1080 800x270 mm 101.60dpi
crtc 1:     1600x900  59.98 +1600+0 "LVDS1"
[taciaka@LDZ9343N ~]$       


[taciaka@LDZ9343N ~]$ xrandr 
Screen 0: minimum 8 x 8, current 3200 x 1080, maximum 32767 x 32767
LVDS1 connected 1600x900+1600+0 (normal left inverted right x axis y axis) 345mm x 194mm
   1600x900      59.98*+  50.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x720      59.97  
   1024x768      75.08    60.00  
   800x600       75.00    60.32  
   640x480       75.00    60.00  
   720x400       70.08  
DP2 connected (normal left inverted right x axis y axis)
   1920x1200     59.95 +
   1920x1080     60.00    50.00    50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.95  
   1600x900      59.98  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x720      60.00    50.00    59.94  
   1024x768      75.08    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DP3 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)