fix for gnome-screensaver lock not allowing to change keyboard layout

fix-screensaver-kblayout.sh

#!/usr/bin/env bash

# This bug is well documented and still not fixed for a long time:
# https://bugs.launchpad.net/gnome-screensaver/+bug/872701

# This script is inspired by two scripts that were submitted on askubuntu.com 
# to fix this issue in Gnome and in Unity:
# http://askubuntu.com/a/803418/472924
# http://askubuntu.com/a/857652/472924

# It should be set to run in the background as a startup application.

KBLAYOUT=$(setxkbmap -query | grep layout | awk '{print $2}')

dbus-monitor --session "type=signal,interface=org.gnome.ScreenSaver" |
while read MSG; do
    LOCK_STAT=$(echo $MSG | grep boolean | awk '{print $2}')
    if [[ -n $LOCK_STAT ]]; then
        if [[ "$LOCK_STAT" == "true" ]]; then
            KBLAYOUT=$(setxkbmap -query | grep layout | awk '{print $2}')
            setxkbmap us
        else
            setxkbmap $KBLAYOUT
        fi
    fi
done