--- acpilight-v1.1/90-backlight.rules	2018-06-21 14:09:44.000000000 +0000
+++ acpilight-v1.1/90-backlight.rules	2018-09-04 00:12:34.839762243 +0000
@@ -1,4 +1,5 @@
 # Allow video group to control backlight and leds
+# do not edit this file, it will be overwritten on update
 SUBSYSTEM=="backlight", ACTION=="add", \
   RUN+="/bin/chgrp video /sys/class/backlight/%k/brightness", \
   RUN+="/bin/chmod g+w /sys/class/backlight/%k/brightness"