- Jun 18, 2015
- Lenovo ThinkPad T470 Sr2f0
- HD 620
It seems likely you removed the native Apple backlight kexts.
Run the macOS installer to restore all your system/Apple provided kexts to vanilla.
Note: Also, SortedOrder not necessary. And SortedOrder with DSDT.aml listed in it is complete nonsense. SortedOrder is only for SSDTs, not DSDT. You should remove your SortedOrder setting entirely.
thank you very much, dear RehabMan, I updated the native Apple backlight kext and the brightness control is working now with slider in system preferences. I cant however control with brightness keys.
Also please guide about the battery status which is not working. If not here, where should I post to get help in this regard.
Thanks once again. Have a nice day(night)!