I can't get my brightness change working. If my DSDT is unedited, then there is no slider for brightness. If I use the PNFL method, I am getting the brightness slider, but it does not change the actual brightness. The keys are also working, I can see the picture on the screen, which tells the level of your brightness. However the actual brightness does not change.
I don't have these methods in my DSDT: _BCL _BCM _BQC
How can I solve this?
Intel HD 4600
OS X 10.9.1
PS. I attached my DSDT: BLANCDSDT.dsl.zip 32.87KB 4 downloads