#!/bin/bash export DISPLAY=":0" OUTPUT="DisplayPort-2" ORIGINAL_RES=$(xdpyinfo | grep dimensions | sed -r 's/^[^0-9]*([0-9]+x[0-9]+).*$/\1/') NEW_RES="${1:-$ORIGINAL_RES}" WM=$(wmctrl -m | head -n 1 | cut -d " " -f2) echo $ORIGINAL_RES set_resolution() { if [ "$ORIGINAL_RES" != "$NEW_RES" ]; then xrandr --output "$OUTPUT" --mode "$1" if [ "$WM" = "i3" ]; then i3-msg restart fi fi } set_resolution $NEW_RES