You can not edit the post, only the comments to the post (until someone
comments on the comment).
I have screen brightness issues on my older lappy. Basically this old, very
old lappy would reset the brightness to the lowest setting each time it
rebooted. What I did to fix it is this ->
sudo mousepad /etc/rc.local
(I'm on Xfce, hence mousepad. You will have 'gedit')
Add the liner:
echo 15 > /sys/class/backlight/intel_backlight/brightness
which in my specific case is actually:
echo 15 > /sys/class/backlight/acer-wmi/brightness
Notice that 15 is the max value of this particular monitor.
Hope this gives you some hint..
