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[Guide] Laptop backlight control using AppleBacklightFixup.kext

Joined
Nov 24, 2016
Messages
10
Motherboard
Samsung NP530U3B-Clover Legacy
CPU
i3-2367M/HM65
Graphics
HD 3000
Or maybe I need to modify my display EDID. Clover can't recognise my display EDID at boot, so I use custom EDID
 
Joined
Aug 17, 2018
Messages
2
Motherboard
DELL Precision M4700
CPU
i7-3740QM/QM77
Graphics
HD4000 / Quadro K2000M
Mac
MacBook Pro
Mobile Phone
iOS
Depending on my 10.14.4 installation are clean install or editing on current installation, SSDT-PNLF work with few EDID patch. With default LGD0215 EDID on a clean install, brightness control show and work perfectly. After patch to inject 9C7C, A030 and various Apple MacBook Color LCD PID still working. But when all my works on patching is done, and i want to re-install a fresh installation with all new config and patches, brightness control slider is gone. Changing SMBIOS model affect this too. As my build, i7 3740QM using HD 4000 Graphics, the tips on Clover Configurator and Hackintools recommending MacBookPro 9,1 and MacBookPro 9,2 SMBIOS but both SMBIOS give me AGPM P-State fault. Currently, i am using MacBookPro10,1 config but with a clean install of 10.14.4 / A030 Display SSDT-PLNF does'nt work at all, my fix are changing to 9C7C Display then switch back to A030. May be on specific LCD model cause this problem, i'm now going to test the ambient light sensor to see what's different with that.
 
Joined
Jan 20, 2011
Messages
102
Motherboard
HP Envy X360 15m-CN00xx
CPU
i5-8250U
Graphics
HD 620
Mobile Phone
iOS
I have followed the directions on post #1 and have also gone over quite a few troubleshooting post but everyone's problem seem to be somewhat unique. my issue is backlight is not working, there is no backlight control under display. The old PNLF patch worked but Backlight control was inconsistent. I would appreciate some help in debugging my issue, thank you very much for your time Rehabman, Feartech, Moderators.
 

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Feartech

Moderator
Joined
Aug 3, 2013
Messages
12,507
Motherboard
Asus N752VX-Clover
CPU
i7-6700HQ / HM170
Graphics
HD530 + GTX 950m 1920 x 1080
Mac
iMac
Mobile Phone
Android
I have followed the directions on post #1 and have also gone over quite a few troubleshooting post but everyone's problem seem to be somewhat unique. my issue is backlight is not working, there is no backlight control under display. The old PNLF patch worked but Backlight control was inconsistent. I would appreciate some help in debugging my issue, thank you very much for your time Rehabman, Feartech, Moderators.
which one of your 2 debugs are you using?
 
Joined
Jan 20, 2011
Messages
102
Motherboard
HP Envy X360 15m-CN00xx
CPU
i5-8250U
Graphics
HD 620
Mobile Phone
iOS
which one of your 2 debugs are you using?
I am currently using 2598, I apologize for the confusion. I included both because I wanted to provide debug for smbios 13,1 and 15,1.
 

Feartech

Moderator
Joined
Aug 3, 2013
Messages
12,507
Motherboard
Asus N752VX-Clover
CPU
i7-6700HQ / HM170
Graphics
HD530 + GTX 950m 1920 x 1080
Mac
iMac
Mobile Phone
Android
I am currently using 2598, I apologize for the confusion. I included both because I wanted to provide debug for smbios 13,1 and 15,1.
what is SSDT-Brightness.aml for? don't see mention of that in the laptop guide

best to also use your coffee lake smbios
 
Joined
Jan 20, 2011
Messages
102
Motherboard
HP Envy X360 15m-CN00xx
CPU
i5-8250U
Graphics
HD 620
Mobile Phone
iOS
what is SSDT-Brightness.aml for? don't see mention of that in the laptop guide

best to also use your coffee lake smbios
The Ssdt-Brightness.aml is for backlight key control, it works well. The other debug I have listed is using the coffeelake smbios, I have yet to see any difference. I was just testing.
 
Joined
Jan 20, 2011
Messages
102
Motherboard
HP Envy X360 15m-CN00xx
CPU
i5-8250U
Graphics
HD 620
Mobile Phone
iOS
I was able to get the brightness working by adding GFX0 to IGPU patch in clover config, although the patch was already being applied by WhatEverGreen. Also it does not seem to work any differently from the old SSDT-PNLF.aml patch I was using. The issue I was having with the old configuration and currently having with this current configuration is when I press the increase or decrease Brightness key, the brightness goes down by 3 bars, simulating 3 button presses.
 

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Joined
May 17, 2019
Messages
11
Motherboard
Samsung NP530U3C-A0ATR
CPU
i5-3317U
Graphics
HD 4000
Mobile Phone
Android
Hi,

I'm trying to fix backlight for a week. I couldn't manage to do that since Sierra 10.12.4. It's only working with El Captain with ACPIBacklight.kext.

I followed the guide but no luck. I attached the necessary files please help. Brightness control is working but not with the max brightness i can barely see the screen when it's on full brightness.
 

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Tho

Joined
Jan 20, 2019
Messages
37
Motherboard
HP
CPU
Core 2 Duo
Graphics
GT 9300 GE
Mac
MacBook Air
Mobile Phone
iOS
It isn't working with my laptop ToT. I can't change the brightness.
 
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