Yes, I have already tried turning off adaptive brightness in the power options, and tried to use fn + a, turning off Display Power Technology. It seems that only turning off Display Power Technology works, however, it goes back to auto dimming even though it is turned off after restarted the laptop a few times.
It also seems that this is an issue with some Asus laptops, where they did the above mentioned but it didn't work either
It also seems that this is an issue with some Asus laptops, where they did the above mentioned but it didn't work either