#!/bin/bash

# If screen is locked (GNOME Screensaver true), enable GPU computing. Otherwise disable GPU computing. 
dbus-monitor --session "type='signal',interface='org.gnome.ScreenSaver'" |
  while read x; do
    case "$x" in
      *"boolean true"*) boinccmd --set_gpu_mode always && echo "GPU Computing Enabled";;
      *"boolean false"*) boinccmd --set_gpu_mode never && echo "GPU Computing Disabled";;
    esac
  done