[Guide] Laptop backlight control using AppleBacklightFixup.kext

[RehabMan]

Hi everyone,
I am not sure what I am doing wrong but I think I haven't configured config.plist correctly (with the one provided by RehabMan I couldn't boot but I think I had to change some parameters, so I used my modified version),
here is my bug report (output provided inside zip).
(PS: Thanks a lot RehabMan for your work).

You need to reboot after rebuilding cache.
Other possibilities (fake EDID product id, fake ALS) mentioned in post #1.
You also need to install kexts properly (all kexts you need should be installed to the system volume).

 

[Oliv1208]

Note: If you already have patched your DSDT (or SSDT) with a "Brightness" patch (PNLF), you must remove it! Same if you're using Clover's AddPNLF_1000000.

How to do this ?

- AppleBacklightInjector.kext installed to /L/E

I don't have this file in L/E. Do i need it to fix backLight ? if yes, how to ?

Thanks

 

[uchika96]

You need to reboot after rebuilding cache.
Other possibilities (fake EDID product id, fake ALS) mentioned in post #1.
You also need to install kexts properly (all kexts you need should be installed to the system volume).

Worked by installing kexts in /L/E, no need for fake EDID, ALS.
Thank you so much.

 

[RehabMan]

How to do this ?

I don't have this file in L/E. Do i need it to fix backLight ? if yes, how to ?

Thanks

Read post #1.

 

[Goldfish64]

Hi,
I've followed through the guide but still don't have a brightness slider on first gen Arrandale HD Graphics on 10.13.1.

​

Injector and SSDT are installed, and PNLF/AppleBacklight shows up in the ioreg.

 

[RehabMan]

Hi,
I've followed through the guide but still don't have a brightness slider on first gen Arrandale HD Graphics on 10.13.1.

View attachment 291002​

Injector and SSDT are installed, and PNLF/AppleBacklight shows up in the ioreg.

Read post #1 regarding EDID product ID.
Also, your kexts are not installed correctly.
Read post #2 of the main Clover guide:
https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/

 

[Goldfish64]

Read post #1 regarding EDID product ID.
Also, your kexts are not installed correctly.
Read post #2 of the main Clover guide:
https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/

Moved kexts to /S/L/E, added the EDID product ID with no success. Still no brightness slider.

 

[RehabMan]

Moved kexts to /S/L/E, added the EDID product ID with no success. Still no brightness slider.

Use config.plist/KernelAndKextPatches/Debug=true to see if the AppleBacklight.kext is being patched as expected.

Note: Kexts are typically installed to /L/E, not /S/L/E.

 

[Goldfish64]

Use config.plist/KernelAndKextPatches/Debug=true to see if the AppleBacklight.kext is being patched as expected.

Note: Kexts are typically installed to /L/E, not /S/L/E.

I enabled debugging of kext patches and indeed it finds a match and patches the AppleBacklight kext.

 

[RehabMan]

I enabled debugging of kext patches and indeed it finds a match and patches the AppleBacklight kext.

It may be a problem with your SMBIOS choice.