If you are looking for usage from just i3, I am using xrandr to enable/disable multi-monitor: $mod+Shift+p exec "xrandr --output HDMI1 --auto --right-of eD

If you are looking for usage from just i3, I am using xrandr to enable/disable multi-monitor: $mod+Shift+p exec "xrandr --output HDMI1 --auto --right-of eDP1" (that with enable second screen through HDMI when Win+Shift+p is pressed) $mod+Shift+o exec "xrandr --output HDMI1 --off" (that disables second screen) bindsym $mod+Shift+x move workspace to output HDMI1 (that moves an entire workspace to the 2nd screen or any screen with the given id)