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[Guide] Laptop backlight control using AppleBacklightFixup.kext

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.
 
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.
 
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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
 
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
 
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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