kasti0

as mentioned here https://github.com/hieplpvip/AppleBacklightSmoother/issues/8 and here https://github.com/hieplpvip/AppleBacklightSmoother/issues/6 the display brightness can´t be completely turned off with the AppleBacklightSmoother.kext. This isn´t a hardware bug as the backlight can be turned off...

Yes you can switch it off completely under windows. The reason for this kext is to make the transition between brightness steps smoother. But the dev of this kext seems...

So you just don’t have fan control or not any fan read-out at all? Seems like there’s some SSDT writing necessary to get full control over the fans

Unfortunately not. It seems like there is a new kext called YogaSMC that tries to add as much functionality as possible to the Lenovo lineup (Yoga, Thinkpad, ideapad)