Script to add a custom resolution when it doesn't get detected automatically (ie. ultrawide)

add_resolution.sh

#!/bin/bash
if [ $# -lt 5 ]
then
	echo "Usage: $0 (add|del) display hres vres refresh"
	exit 1
fi

mode=$1
display=$2
hres=$3
vres=$4
ref=$5

modename=$(cvt $hres $vres $ref|sed -n '2p'|cut -d\  -f2)
modeline=$(cvt $hres $vres $ref|sed -n '2p'|cut -d\  -f2-)

if [ $mode == "add" ]
then
	xrandr --newmode $modeline
	xrandr --addmode $display $modename

	echo "To set mode, use: xrandr --output $display --mode $modename"
elif [ $mode == "del" ]
then
	xrandr --delmode $display $modename
	xrandr --rmmode $modename
fi