xrandr changing primary display
If you have multiple displays and want to change which display is the main one
#list the displays
xrandr --listactivemonitors
Monitors: 3
0: +*HDMI-1 1920/527x1080/296+1920+1080 HDMI-1
1: +DP-0 1920/527x1080/296+0+0 DP-0
2: +HDMI-0 1920/527x1080/296+0+1080 HDMI-0
#example below shows how to change the primary display based on above output
xrandr --output HDMI-1 --primary
xrandr --output HDMI-0 --primary
xrandr --output eDP-1 --primary