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nguyenhung9x2020 / HP-PROBOOK-4540S-HACKINTOSH

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Brightness controls not working #12

Open HeyPapito opened 3 years ago

HeyPapito commented 3 years ago

Can’t turn down brightness with keyboard button or in macOS. Everything else working great

cciRRus commented 3 years ago

Yes, brightness control does not work: keyboard buttons nor Display Preferences, no way to adjust brightness. I was told that the reason is because the display is detected as an external display, instead of a laptop LCD display. We need to somehow change that.

From the screenshot provided in this project, we can see that the first display, labeled "Built-in Display", is represented by a picture of an external monitor.

HeyPapito commented 3 years ago

brightness is working now. Everything works except connecting bluetooth devices for some reason

cciRRus commented 3 years ago

I discovered the fix: replace SSDT-PLNF.aml with RehabMan's version. Get it from:

https://bitbucket.org/RehabMan/applebacklightfixup/downloads/

RehabMan-BacklightFixup-2018-1013.zip [dated 2018-10-13]

While the zip file contains the kext, it is NOT REQUIRED.

After using this SSDT-PLNF.aml, at Display preferences, it correctly shows the display as a laptop LCD.

Hope this helps!

HeyPapito commented 3 years ago

Didn't have to do that when i installed big sur. worked straight away after installling

does your bluetooth work? i have the same card in the specs on here (BCM94352HMB)

cciRRus commented 3 years ago

I started with 11.3.1 and the EFI.zip here. Everything works except the brightness control. I put in RehabMan's SSDT-PNLF.aml, brightness control works. To be absolutely sure, I replaced it with the original SSDT-PNLF.aml in the EFI.zip here, or the official one from OpenCore, and then brightness control fails. So I conclude that the fix is to use RehabMan's SSDT-PNLF.aml.

Sorry, I don't have that wireless module; mine does not support Bluetooth.