backlight = float(subprocess.check_output(["xbacklight", "-get"]).strip())
if backlight == 0: # it's completely turned off, we better enable it
subprocess.check_call(["xbacklight", "-set", "100"])
backlight = float(subprocess.check_output(["xbacklight", "-get"]).strip())
if backlight == 0: # it's completely turned off, we better enable it
subprocess.check_call(["xbacklight", "-set", "100"])