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[Guide] Laptop backlight control using AppleBacklightFixup.kext

Joined
Aug 21, 2017
Messages
24
Motherboard
Dell Latitude 5591
CPU
i3-10110U
Graphics
Intel UHD Graphics
Mac
MacBook Air
Mobile Phone
Android
SSDT-PNLF.aml - _UID is set depending on PWMMax...
Mine is COMMET LAKE i3-10110u DELL - any given options of UID - screen is very dimmed
What is the settengs for me ?
 
Joined
Jul 16, 2010
Messages
412
Motherboard
Asus Pro WS x299 Sage II
CPU
i9-10980XE
Graphics
RX 5500 XT
Mac
Mac Pro
Mobile Phone
iOS
For my Asus G750-JX it has an nvidia GTX 770M, natively supported while IGPU is disabled by Asus in Bios. Whatevergreen does not support laptop Nvidia only IGPU in Laptops so LCD brightness cannot function with just WTG. I still need to use applebacklightfixup along with a properly made SSDT-Nvidia.aml and WTG to prevent black screen. With those 3 files I have fully working LCD brightness and apple animation on Catalina 10.15.4

I also have an older laptop Dell M1530 core 2 duo with older GFX GT 8600, but very famous for making its way all the way through most MacOS upgrades up to 10.11 and with some legacy graphics patching to work in Catalina but trying to get brightness to work with the same combination of an SSDT, WTG and ABF is more challenging in this particular case.
 
Last edited:
Joined
Aug 30, 2018
Messages
3
Motherboard
Asus zenbook ux310uqk
CPU
i7 7500u 8GB DDR4
Graphics
hd620 and Nvidia 940MX
Mac
MacBook Pro
Mobile Phone
iOS
Hi @RehabMan pls when I follow the guide is not working on my computer I don't know why
 

trs96

Moderator
Joined
Jul 31, 2012
Messages
17,367
Motherboard
GA-Z97X-UD3H-BK
CPU
i5-4690K
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HD4600 / RX 570
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iMac, Mac mini
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