[Guide] Laptop backlight control using AppleBacklightFixup.kext

[Cecemel]

What you have there is nonsense.

EDID is 128 bytes of data. You must extract entire 128 bytes, then change just the ProductID, recalculate checksum, then inject the entire patched 128 bytes.

Alright. I'm having a look at the guide with tosbaha's ruby script.

 

[Cecemel]

What you have there is nonsense.

EDID is 128 bytes of data. You must extract entire 128 bytes, then change just the ProductID, recalculate checksum, then inject the entire patched 128 bytes.

I guess it should look something like this?

 

[Cecemel]

What you have there is nonsense.

EDID is 128 bytes of data. You must extract entire 128 bytes, then change just the ProductID, recalculate checksum, then inject the entire patched 128 bytes.

Yay, it worked! Brightness keys are already working but I suppose that's because I'm using a bluetooth apple keyboard? It does appear that my screen colours are a little off now, any idea what the cause of this could be? Also, is there a fix to enable smooth transitions between brightness levels?

 

[RehabMan]

Alright. I'm having a look at the guide with tosbaha's ruby script.

Because it is unfortunate to lose Clover's EDID features at config.plist/Graphics/EDID, I'm looking at adding some special cases for the Devices/Properties code. It is already done for Graphics/ig-platform-id, Graphics/snb-platform-id, in that Clover will "fixup" any Devices/Properties values that have "-platform-id" in them with the value specified by Graphics/ig-platform-id or Graphics/snb-platform-id. It is all a bit ugly and an unfortunate side effect of the poor design in Clover's property injection code.

 

[RehabMan]

Yay, it worked! Brightness keys are already working but I suppose that's because I'm using a bluetooth apple keyboard?

Yeah, probably built-in support for that keyboard. Brightness keys on the laptop will require appropriate ACPI patching.

It does appear that my screen colours are a little off now, any idea what the cause of this could be?

Maybe there is a display override for that monitor (0x9c7c) or a color profile. Color profile can be changed in SysPrefs->Displays. And a display override could be deleted or replaced.

Also, is there a fix to enable smooth transitions between brightness levels?

No.

 

[Cecemel]

Yeah, probably built-in support for that keyboard. Brightness keys on the laptop will require appropriate ACPI patching.

Maybe there is a display override for that monitor (0x9c7c) or a color profile. Color profile can be changed in SysPrefs->Displays. And a display override could be deleted or replaced.

No.

Changed color profile and it looks fine now.

 

[mhk]

Your ioreg shows ACPIBacklight.kext installed. As per post #1, ACPIBacklight.kext and IntelBacklight.kext cannot be used since 10.12.4.

Read post #1.

Thanks for your reply.
I check kexts and generate new zip because still no effect. Elier in HS I just add "backlight" in DSDT and just run excellent. After update from beta backlight gone but Jmicron SDcard reader start work and I do nothing to run it. Just start and work great.
Maybe I just something mess up when I repair backlight.
I'll be grateful if you look on this one more time.

 

[RehabMan]

Thanks for your reply.
I check kexts and generate new zip because still no effect. Elier in HS I just add "backlight" in DSDT and just run excellent. After update from beta backlight gone but Jmicron SDcard reader start work and I do nothing to run it. Just start and work great.
Maybe I just something mess up when I repair backlight.
I'll be grateful if you look on this one more time.

Your kextcache shows ACPIBacklight.kext installed. Plain as day:

Kext with invalid signatured (-67062) allowed: <OSKext 0x7faea6abe8a0 [0x7fffa8f208e0]> { URL = "ACPIBacklight.kext/ -- file:///System/Library/Extensions/", ID = "com.darwin.driver.ACPIBacklight" }

Follow Probook guide as written:
https://www.tonymacx86.com/threads/...book-zbook-using-clover-uefi-hotpatch.261719/

 

[mhk]

Your kextcache shows ACPIBacklight.kext installed. Plain as day:

Kext with invalid signatured (-67062) allowed: <OSKext 0x7faea6abe8a0 [0x7fffa8f208e0]> { URL = "ACPIBacklight.kext/ -- file:///System/Library/Extensions/", ID = "com.darwin.driver.ACPIBacklight" }

Follow Probook guide as written:
https://www.tonymacx86.com/threads/...book-zbook-using-clover-uefi-hotpatch.261719/

Sorry I don't no why I don't delete this
Ok. Last chance for me.
I'm learning everything from the scratch.

Slider gone this time.

 

[RehabMan]

Sorry I don't no why I don't delete this
Ok. Last chance for me.
I'm learning everything from the scratch.

Slider gone this time.

Your posts here are off-topic.
Your laptop has a guide you should follow:
https://www.tonymacx86.com/threads/...book-zbook-using-clover-uefi-hotpatch.261719/

You did not follow it.

Plan on running the macOS installer to restore all your Apple provided kexts to original (because I think you deleted or corrupted one or more of them).