How To Fix Low Backlight Level with BacklightFixup.kext
Clover boot loader seems NOT to handle Lilu.kext, WhateverGreen.kext and SSDT-PNLF.aml well when it comes to setting the backlight level on Hackintosh while OpenCore boot loader sets the maximum brightness every time. In the case of low backlight with Clover, we can use and its SSDT-PNLF.aml to set the brightness to maximum.