Contribute
Register

[Guide] Laptop backlight control using AppleBacklightFixup.kext

Joined
Jan 20, 2011
Messages
93
Motherboard
MSI GS65 8SE
CPU
i7-8750H
Graphics
HD 630, RTX 2060, 1080p
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.
 

Attachments

Last edited:

Feartech

Moderator
Joined
Aug 3, 2013
Messages
10,416
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
93
Motherboard
MSI GS65 8SE
CPU
i7-8750H
Graphics
HD 630, RTX 2060, 1080p
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
10,416
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
93
Motherboard
MSI GS65 8SE
CPU
i7-8750H
Graphics
HD 630, RTX 2060, 1080p
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
93
Motherboard
MSI GS65 8SE
CPU
i7-8750H
Graphics
HD 630, RTX 2060, 1080p
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.
 

Attachments

Joined
May 17, 2019
Messages
10
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.
 

Attachments

Tho

Joined
Jan 20, 2019
Messages
26
Motherboard
Sony Vaio
CPU
i5-3210M
Graphics
HD 4000 & GT 640MLE
Mobile Phone
iOS
It isn't working with my laptop ToT. I can't change the brightness.
 
Top