[Guide] Laptop backlight control using AppleBacklightFixup.kext

[RehabMan]

You are a hero, it works perfectly now.

If sleep is working, make sure you compare relative backlight levels pre-sleep vs. post-sleep.

I'm not really 100% sure on the LMAX of 0xff7b.
It could be anywhere between 0xff7b and 0xffff. That is a small difference and not likely to be noticed though.

If you could get a framebuffer dump from the CFL kext (kernel flag -igfxdump), that would be great.

 

[userpakal]

If you could get a framebuffer dump from the CFL kext (kernel flag -igfxdump), that would be great.

I booted with -igfxdump, but I couldn't find the framebuffer dump in the root of my macOS drive.

Am I doing something wrong?

 

[RehabMan]

I booted with -igfxdump, but I couldn't find the framebuffer dump in the root of my macOS drive.

Am I doing something wrong?

Did you install the debug WhateverGreen.kext?

Note (from WhateverGreen source):

#ifdef DEBUG
       if (checkKernelArgument("-igfxdump"))
           dumpFramebufferToDisk = true;
#endif

 

[vettz500]

Razer Blade 15 running Mojave.
i7-8750H
UHD 630 Graphics
Nvidia GTX 1060 (Disabled)
Followed the guide but no backlight control. Also upon first boost my entire screen stays black for about 3 minutes and then comes to life. If I shine my phones flashlight against the screen, I can see what's on the screen, kind of and I can log in, so it's fully booted.

Problem reporting files attached.

 

[RehabMan]

Razer Blade 15 running Mojave.
i7-8750H
UHD 630 Graphics
Nvidia GTX 1060 (Disabled)
Followed the guide but no backlight control. Also upon first boost my entire screen stays black for about 3 minutes and then comes to life. If I shine my phones flashlight against the screen, I can see what's on the screen, kind of and I can log in, so it's fully booted.

Problem reporting files attached.

You forgot to put SSDT-PNLF.aml in ACPI/patched. Clover does not read .dsl files.

Also...
Your kextcache output proves kexts are not installed correctly.
All kexts you need must be installed to the system volume.
Read post #2 of the Clover guide for details:
https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/

 

[vettz500]

You forgot to put SSDT-PNLF.aml in ACPI/patched. Clover does not read .dsl files.

Also...
Your kextcache output proves kexts are not installed correctly.
All kexts you need must be installed to the system volume.
Read post #2 of the Clover guide for details:
https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/

Was still working on getting the system up and running, didn't cross my mind to move the kexts over. Also completely overlooked the SSDT-PNLF not being an aml file. Both issues fixed and the issue still remains. No control over screen brightness and a black screen upon first boot for the first few minutes and then the backlight turns on.

Updated problem reporting files attached.

 

[RehabMan]

Was still working on getting the system up and running, didn't cross my mind to move the kexts over. Also completely overlooked the SSDT-PNLF not being an aml file. Both issues fixed and the issue still remains. No control over screen brightness and a black screen upon first boot for the first few minutes and then the backlight turns on.

Updated problem reporting files attached.

As per guide, ForceKextsToLoad is only for pre-install. After install, it should be removed.

Make sure you rebuild caches and reboot.

Other problems:
- you're using the wrong Clover. The Clover you're using has a serious ACPI patching bug. Use latest RehabMan Clover as linked from the guide.
- CsmVideoDxe not recommended. Remove.
- EmuVaraibleUefi not recommended. Remove.

Also, read post #1 regarding EDID patching that may be necessary.

When everything is working correctly with your kernel cache and patching, the ApplePanels under PNLF->AppleIntelPanelA should change to ApplePanel with just the F19Txxx entry.

 

[SandyMacs]

I do not see the "beta" branch in https://github.com/RehabMan/OS-X-Clover-Laptop-Config.git
nor the "beta_weg" branch in https://github.com/RehabMan/HP-ProBook-4x30s-DSDT-Patch
Is it OK to use the default "master" branches?

 

[RehabMan]

I do not see the "beta" branch in https://github.com/RehabMan/OS-X-Clover-Laptop-Config.git
nor the "beta_weg" branch in https://github.com/RehabMan/HP-ProBook-4x30s-DSDT-Patch
Is it OK to use the default "master" branches?

Beta branch merged into master yesterday (for both). Use master.

 

[vettz500]

As per guide, ForceKextsToLoad is only for pre-install. After install, it should be removed.

Make sure you rebuild caches and reboot.

Other problems:
- you're using the wrong Clover. The Clover you're using has a serious ACPI patching bug. Use latest RehabMan Clover as linked from the guide.
- CsmVideoDxe not recommended. Remove.
- EmuVaraibleUefi not recommended. Remove.

Also, read post #1 regarding EDID patching that may be necessary.

When everything is working correctly with your kernel cache and patching, the ApplePanels under PNLF->AppleIntelPanelA should change to ApplePanel with just the F19Txxx entry.

Kexts were installed to L/E and kext cache rebuilt in my last post, but I rebuilt cache again anyways for this time around. Updated Clover to your latest version, patched the EDID and removed CsmVideoDxe & EmuVaraibleUefi.

The good news is, I have brightness control now and the keys on my keyboard are mapped properly and work. So that's a step in the right direction!

But I still have a black screen with no backlight at all at first boot for about 3 or so minutes. I attached an updated problem reporting file for this one as well.