systemd-sleep kwin hook

kwin.sh

#!/bin/bash
#
# Restart kwin on resume after suspend

case "${1}" in
  post)

    KWIN_PID=$(pidof kwin)
    KWIN_X11_PID=$(pidof kwin_x11)

    if [ -n "${KWIN_PID}" ] ; then
      KWIN_USER=$(ps -o euser= "${KWIN_PID}")
      su "${KWIN_USER}" -c "DISPLAY=:0 kwin --replace &" 
      echo "kwin was successfully restarted after waking up..."
    elif [ -n "${KWIN_X11_PID}" ] ; then
      KWIN_X11_USER=$(ps -o euser= "${KWIN_X11_PID}")
      su "${KWIN_X11_USER}" -c "DISPLAY=:0 kwin_x11 --replace &"
      echo "kwin_x11 was successfully restarted after waking up..."
    else
      echo "kwin/kwin_x11 is not running..."
      exit 1
    fi
    ;;
esac