Just a quick heads up,
I found a way to do it, but if you do it, DO NOT SET IT to 10!
I did that thinking 100 was max, but 600 or more i think is the max number.
and it took me a lot of squinting to fix the problem...
sudo -H gedit /etc/rc.local
This is what you will want it to look like, if I were you I would set the
bottom to 500, or anything above 300.
Trust me it does work. :)
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
echo 500 > /sys/class/backlight/intel_backlight/brightness
exit 0
