Now I am using ACPIBacklight.kext + old Brightness fix(HD3000/4000) + Brightness.app, it works well.
with newest Brightness fix(HD3000/4000), the maximum brightness is 20% of the Windows(since you updated this pacth
)
It is about 10.10 or 10.11, I found that this patch does not allow me to get the same maximum brightness as before(maybe you updated the pacth at that time),so I cut the old patch from the previous DSDT,and it worked again.
I found that the different parts really work is this part:Method (_INI, 0, NotSerialized)
I replaced the Method (_INI, 0, NotSerialized) in the new Brightness fix(HD3000/4000) with the Method (_INI, 0, NotSerialized) in old Brightness fix(HD3000/4000),this gives me the maximum brightness again.
Could you please modify the Method (_INI, 0, NotSerialized) in SSDT-PNLF.aml to make it looks like old Method in old Brightness fix patch?
Here are the Brightness fix(HD3000/4000)