Hi everyone!
This is the 1st time posting to this forum.

I installed kali dual boot (with windows) to my toshiba satellite laptop l755.Everything works perfectly except the brightness.It is always at 100%.I tried change it with the fn button + the f shortcut for brightness and while it show the bar changes , the brightness still stays at 100%..Also i tried change it from the system settings but the same happens(i move the bar but it is alwas 100%).It is very annoying and i cannot work with 100% brighness because it tires me and my eyes hurts(especially when i read at white).Also it drains my battery..
Does anyone knows how to fix it?
Thank you in advance!