Index: scripts/brightness_set.sh
===================================================================
diff -u -rdc98fbd0709e7dbd7e0bcda30e90e38e152ed237 -red13dece5fffd6cbe034eb1fa6a6d0dbf79d560f
--- scripts/brightness_set.sh	(.../brightness_set.sh)	(revision dc98fbd0709e7dbd7e0bcda30e90e38e152ed237)
+++ scripts/brightness_set.sh	(.../brightness_set.sh)	(revision ed13dece5fffd6cbe034eb1fa6a6d0dbf79d560f)
@@ -15,12 +15,5 @@
 #
 ############################################################################
 
-if [ "$#" -eq 0 ]; then
-    currentFile=$(basename "$0")
-    echo "Usage: ./$currentFile '<brightness>'"
-    exit 0
-fi
-
-echo "$1" | sudo tee /sys/class/backlight/lvds_backlight/brightness > /dev/null                                     # realtime
-echo "$1" | sudo tee /var/lib/systemd/backlight/platform-lvds_backlight\:backlight\:lvds_backlight > /dev/null      # preserve for reboot
-
+echo "$(( $1 * 10 ))" > /sys/class/backlight/lvds_backlight/brightness
+exit 0