[Guide] Laptop backlight control using AppleBacklightFixup.kext

[RehabMan]

my backlight control work on 10.12.4 without patch.

Not 100%.
PNLF patch always required.
IntelBacklight.kext is broken.
If you delete IntelBacklight.kext, AppleBacklight.kext will activate.
But without correct PNLF implementation, brightness levels will be different on boot vs. after sleep.
And without AppleBacklightInjector.kext and AppleBacklight patch, you will not have full brightness range.

 

[bosu1787]

Not 100%.
PNLF patch always required.
IntelBacklight.kext is broken.
If you delete IntelBacklight.kext, AppleBacklight.kext will activate.
But without correct PNLF implementation, brightness levels will be different on boot vs. after sleep.
And without AppleBacklightInjector.kext and AppleBacklight patch, you will not have full brightness range.

ok so is not working 100%. I need to remove [igpu] Brightness fix patch ? and start this guide?

 

[RehabMan]

ok so is not working 100%. I need to remove [igpu] Brightness fix patch ? and start this guide?

Yes. It is all covered in detail in post #1.

 

[tautvis]

rehabman maybe can you look in my files and say what I do wrong slide bar working but keyboard brightness keys not

 

[RehabMan]

rehabman maybe can you look in my files and say what I do wrong slide bar working but keyboard brightness keys not

Off-topic here...

Brightness keys are covered in the older brightness guide:
https://www.tonymacx86.com/threads/guide-patching-dsdt-ssdt-for-laptop-backlight-control.152659/

 

[wswblg]

i do follow this post on my laptop lenovo x240, but nothing happened .

need help

below is my clover's file:

 

[sadnessly]

It seems not to take effect in resolution 1920x1080? when I boot the system in 1920x1080, it would be max level of backlight.the bar of light level can be dragged, but cant change brightness unless I change to low resolution. Low resolution (1600x900 1366x768) doesnt have the problem above.

 

[RehabMan]

i do follow this post on my laptop lenovo x240, but nothing happened .

need help

below is my clover's file:
View attachment 250843 View attachment 250844

No ioreg provided.
Your kextcache output shows no AppleBacklightInjector.kext installed.

 

[RehabMan]

It seems not to take effect in resolution 1920x1080? when I boot the system in 1920x1080, it would be max level of backlight.the bar of light level can be dragged, but cant change brightness unless I change to low resolution. Low resolution (1600x900 1366x768) doesnt have the problem above.

Read post #1, "Problem Reporting"

 

[wswblg]

No ioreg provided.
Your kextcache output shows no AppleBacklightInjector.kext installed.

here is my ioreg

i already copy AppleBacklightInjector.kext to /l/e,but dont know why useless.

how AppleBacklightInjector.kext can be used correctly?