[Guide] Laptop backlight control using AppleBacklightFixup.kext

[zimyy]

Does it work with High Sierra GM candidate？I've tried it on HS beta3,it didn't work

 

[RehabMan]

Does the guide in the op work with an Asus laptop? I had working brightness keys until some days ago, without any update they don't work anymore and I don't understand why, probably the issue occured after permissions repair...

Someone can help me?

Read post #1, "Problem Reporting".

 

[RehabMan]

Does it work with High Sierra GM candidate？I've tried it on HS beta3,it didn't work

Read post #1, "Problem Reporting".

 

[abhinasia]

This Method may be work on Samsung NP270E5V Intel i3 Processor 3120M HD 4000 EL Capitan 10.11.6

 

[RehabMan]

This Method may be work on Samsung NP270E5V Intel i3 Processor 3120M HD 4000 EL Capitan 10.11.6

Is that a question or statement?
It is written like a statement (no ? at the end, no period either), but reads like a question.
If it is a question, read post #1 and try it.

 

[abhinasia]

Sorry.
My Laptop brightness control is not fixed properly so that you given Method can be fix brightness control ?

OS EL Capitan 10.11.6
Samsung NP270E5V
Intel i3 Processor 3120M
HD 4000

 

[RehabMan]

Sorry.
My Laptop brightness control is not fixed properly so that you given Method can be fix brightness control ?

OS EL Capitan 10.11.6
Samsung NP270E5V
Intel i3 Processor 3120M
HD 4000

Read post #1. Follow as written.
If you have an issue, attach "Problem Reporting" files as per post #1, "Problem Reporting".

 

[abhinasia]

Read post #1. Follow as written.
If you have an issue, attach "Problem Reporting" files as per post #1, "Problem Reporting".

Thank You..

This guide worked for My configuration

 

[suffering]

Problems trying to get this working. Have followed all the steps, but having a problem with the DSDT. When I applied the patch to rename GFX0 to IGPU, it will not boot. It will end up "still waiting for root device"

I attached two versions of my patched DSDT. "working" is the version without GFX to IGPU, "not working" is with that patch. As soon as I put the "working" patch back i can boot without issues.

MacBook:Rehabman brian$ kextstat|grep -y acpiplat
   13    2 0xffffff7f82fad000 0x60000    0x60000    com.apple.driver.AppleACPIPlatform (5.0) 65E05472-6AE7-3308-8CC8-FA6CB0DB2AEE <12 11 7 6 5 4 3 1>
MacBook:Rehabman brian$ kextstat|grep -y appleintelcpu
MacBook:Rehabman brian$ kextstat|grep -y applelpc
MacBook:Rehabman brian$ kextstat|grep -y applehda
   91    1 0xffffff7f82c04000 0x1d000    0x1d000    com.apple.driver.AppleHDAController (279.48) ED51F180-19C8-3DE1-AF81-0E389D98ADDE <90 89 77 12 7 6 5 4 3 1>
  111    0 0xffffff7f82d86000 0xb5000    0xb5000    com.apple.driver.AppleHDA (279.48) 806B8C17-50CA-3C6B-90B3-195F38D8FB89 <110 95 91 90 89 77 6 5 4 3 1>
  112    0 0xffffff7f82c00000 0x2000     0x2000     com.apple.driver.AppleHDAHardwareConfigDriver (279.48) 14690424-1048-3F1D-8A3D-41657C97EB67 <4 3>
MacBook:Rehabman brian$ sudo touch /System/Library/Extensions && sudo kextcache -u /
Password:
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext VoodooPS2Trackpad.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext VoodooPS2Mouse.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext VoodooPS2Keyboard.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext VoodooPS2Controller.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext NullEthernet.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext Lilu.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext ApplePS2Keyboard.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext ApplePS2Controller.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext ApplePS2SmartTouchPad.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext PinConfigs.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext AppleALC.kext
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext ACPIBatteryManager.kext
KernelCache ID: B96C35BF045218ED12E7CE6A840EE73B

 

[jaywolf95]

After following the guide, I'm still not getting a brightness slider, I'm kinda stumped as to what's wrong. I'm really hoping someone can make sense of it.