RehabMan
Moderator
- Joined
- May 2, 2012
- Messages
- 181,016
- Motherboard
- Intel DH67BL
- CPU
- i7-2600K
- Graphics
- HD 3000
- Mac
- Mobile Phone
When I said "it works fine for me without it" I was referring to AppleBacklightInjector.kext. Right now I'm using the Kaby Lake value of 1388 which appears okay.
You will still need an appropriately coded AppleBacklightInjector.kext for the brightness data/steps.
Without it, you'll see "Default" in ioreg AppleBacklightPanelA, which generally does not work for complete brightness range.
Not surprising that 0x56c would be used as the same was used for Skylake/KabyLake.
You can get a full binary dump of the ig-platform-id data using the -igfxdump boot flag for WhateverGreen.
No CFL hardware here to test with.
Hopefully someone with a real Coffee Lake Mac can help us out. Either that or we can possibly find it by reversing AppleIntelCFLGraphicsFramebuffer.
Yes.
Or by guessing just by looking at the brightness profiles added in AppleBacklight.kext Info.plist.