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[Guide] Laptop backlight control using AppleBacklightFixup.kext

Joined
Jun 20, 2015
Messages
14
Motherboard
Lenovo ThinkPad X230
CPU
i5-3320M
Graphics
HD 4000
Mobile Phone
  1. iOS
Joined
Jan 27, 2018
Messages
29
Motherboard
B560-Plus
CPU
i5 11600
Graphics
rx460
Mac
  1. MacBook Air
Mobile Phone
  1. Android
Cool! I checked your EFI but I don't see igfxpwmmax=0x???? bootarg in your config. Did the kext itself fixed the dim maximum brightness? I'm using the Intel Hd 4000 (ivy bridge) by the way.
No, I don't know why how it works, but this is the only way it works. WEG alone does not work at all. Disabling the WEG backlight code and using smoother kext leads to the problem with the max brightness too low. By accident I did this and it worked.

edit: be sure to also use the PNLF aml file from my EFI.
 
Joined
Jun 20, 2015
Messages
14
Motherboard
Lenovo ThinkPad X230
CPU
i5-3320M
Graphics
HD 4000
Mobile Phone
  1. iOS
No, I don't know why how it works, but this is the only way it works. WEG alone does not work at all. Disabling the WEG backlight code and using smoother kext leads to the problem with the max brightness too low. By accident I did this and it worked.

edit: be sure to also use the PNLF aml file from my EFI.
Thanks! Now I have full brightness.

The only problem is that the slider reaches the maximum brightness at the middle. So the brightness slider doesn't increase anything after is passes through the half of it's lenght, it already reaches max at the middle.
 
Joined
Jun 18, 2011
Messages
57
Motherboard
Gigabyte P15Fv5
CPU
i7 6700HQ
Graphics
GTX 950M, HD 530
Mac
  1. MacBook Pro
Mobile Phone
  1. Android
  2. iOS
Last edited:

Feartech

Moderator
Joined
Aug 3, 2013
Messages
23,642
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
  1. iMac
Mobile Phone
  1. iOS
I have question for my laptop please, How can i use hot key Fn+F8 Fn+F9 to control brightness level?
post 1 has a link
 
Joined
Jun 18, 2011
Messages
57
Motherboard
Gigabyte P15Fv5
CPU
i7 6700HQ
Graphics
GTX 950M, HD 530
Mac
  1. MacBook Pro
Mobile Phone
  1. Android
  2. iOS
post 1 has a link
i read carefully but i can't find, can you guide me pls, As i know it must patch DSDT for method _Q10 _Q11
this kext for VooodooPS2Controller
But my keyboard is elan
 

Feartech

Moderator
Joined
Aug 3, 2013
Messages
23,642
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
  1. iMac
Mobile Phone
  1. iOS
i read carefully but i can't find, can you guide me pls, As i know it must patch DSDT for method _Q10 _Q11
this kext for VooodooPS2Controller
But my keyboard is elan
your hardware profile has no mention of laptop

please read the faq for proper hardware profile setup:
 
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