dikkiedirk

After trying several patches, possibly all wrong I have come to the conclusion that it is not possible to get brightness control working on this laptop or I am on the wrong track. Another possibility is that I have no expertise to solve this problem. So far the patches I tried were all done in the DSDT, but shouldn't they be done to SSDT-2? Because there I find PEGP.DGFX, BCM, BQL and BCL and LCD. IF so, can anyone of you analyse this SSDT-2 an possibly patch it? ACPI.zip

I already have an even simpler PNLF patch in my DSDT. I would like to know where and how the patch that I posted should be placed. The link you posted seems specific for Haswell with Intel graphics. The laptop I have is Nvidia only.

Can you please tell me where and how to place the patch in the attachment? patch.txt

ACPIbacklight resulted in a black screen.

If I knew where to put it. Do you some more tips or options to try?

Again, no change, Shouldn't the be something like @0built-in? together with PNLF?

It did nothing, but still boots, phew.

Just curious: where did you patch it with? Can this patch also be applied in clover like an EFI string. Clover was installed and DSDT patches were made with Prebook Installer Clover Edition. I like to learn from WHAT you have done and WHY. And also HOW it was done. Do you expect brightness control will work after applying the patch? Are the patches that were done in Prebook Installer still in place? My patched DSDT already had the PNLF patch in. The attached DSDT from you is exactly 1 Byte smaller than mine, so nothing seems to be added.

I have already done a lot of homework, studying and learning. Regarding hackintoshing and also Mac OS. Completely new stuff for me. I attach complete clover folder and ioreg. CLOVER 3.zip Dirk’s MacBook Pro.zip

Thanks for the quick response. Because I am a beginner at hackintoshing it takes some time to post the files you ask for. I probably need some tools to am I right? How do I get DSDT or do you need SSDTs too? How do I get such an ioreg file? What does ioreg tell you? Do you need specific information about the laptop screen itself? You probably need info about where certain values are written? How great is the risk to brick my current install? How do I attach the required files. Many thanks in advance.

I have 10.11.2 running on my Elitebook 8570w. Lots of features work like sound, wifi, bluetooth, speedstep. One thing is not though, Screen Brightness Control. This probably due to the fact my laptop screen isn't recognised. About this Mac shows a TV under Displays. So how can I get the screen be recognised as a Applebacklightdisplay. I found out that some injections are needed, but which? And where and how to put them there. Can someone help me to solve mysteries? Maybe my assumptions are all wrong and the problem is somewhere else. Please correct me if I am wrong.