cciRRus

No issues with graphics acceleration with the release EFI.zip on my ProBook 4540S. Perhaps you should check that you loaded the right EFI.zip, and the files inside are not corrupted...

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...

I discovered the fix: replace **SSDT-PLNF.aml** with RehabMan's version. Get it from: [https://bitbucket.org/RehabMan/applebacklightfixup/downloads/](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...

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...