DSDT Patching : Native Brightness Control

To let OSX handle brightness (better energy efficiency) just add to dsdt this device:

Device (PNLF)
{
Name (_HID, EisaId ("APP0002"))
Name (_CID, "backlight")
Name (_UID, 0x0A)
Name (_STA, 0x0B)
}

Place it before Device (SLPB). After it sees your Display settings...



link

We can no longer use Fn+PgUp / Fn+PgDn to control brightness ... but we can use "Shades"