@dr_frost_dk,
I mean I follow your 1st post, editing mce.ini
I am not following your 2nd post, installing the customer_brightness

if your previous post (yesterday at 15:25) was a reply to my post, than it mean that i haven't install cutom_brightness so i think my problem occur not because custom_brightness.

so let me explain my problem again:
I have edit mce.ini and replace filter_brightness_als with filter_brightness_simple.
I reboot my phone and set the brightness the 1 bar (lowest), but the screen bright is not what I expected, it still to bright.
When I run "killall mce" command, then the screen bright become very low, just like what you expect from brightness level 1.

why is this? is there any other file to edit?