Hi RehabMan, sorry for reply late, I have set LMAX to 0x56c , but the issue('wake up' with black screen only backlight) is still exist.
And I found whether I use AppleBacklightInjector.kext or not (just use config patches and SSDT-PNLF.aml,SSDT-config). the backlight control is fine on my machine . and I found when I use AppleBacklightInjector.kext to l/e ,in terminal ,I use sudo touch /System/Library/Extensions && sudo kextcache -u /. it seems AppleBacklightInjector.kext was loaded.
but in apple extension interface. It appears unload(you can see it below).
And I found a new kext AGDCBacklightControl.kext load when I not install the AppleBacklightInjector to l/e.
when a install AppleBacklightInjector to l/e. rebuild cache,restart computer . although the AppleBacklightInjector is not load in apple extension interface .the AGDCBacklightControl.kext can not load . In other words .the AGDCBacklightControl.kext can only
load when l delete the AppleBacklightInjector.kext in l/e.
My system is 10.13beta (17A360a) ,In last versions 10.13 beta (17A352a)I can see the AppleBacklightInjector appears load in Apple extension interface.
if AppleBacklightInjector.kext are broken in 10.13 beta(17A360a). but I feel my backlight control can work fine without it.
sorry for my poor English.
Thanks for your suggestion ! thank you very much.
here is the latest the latest Reporting files.