Automatically enable Freesync on Linux

.xsession

#!/bin/bash

## Enable freesync - put this in eg. your .xsession
## http://support.amd.com/en-us/kb-articles/Pages/HOW-TO-ENABLE-AMD-FREESYNC-IN-LINUX.aspx

set -u

xrandr --prop | while read line; do
    if echo "$line" | grep ' connected' > /dev/null; then
        monitor=$(echo $line | awk '{print $1}')
    else
        if echo "$line" | grep 'freesync_capable: 1' > /dev/null; then
            echo "Enabling freesync on $monitor"
            xrandr --output $monitor --set "freesync" 1
        fi
    fi
done