Hello! I spent some more hours over the ACPI code and found the following:
There are _CST tables, but they are loaded dynamically during the
runtime. But none of the _CST state deliver a fourth state (C4) nor
does it replace the third state (as done on some other laptops).
So the kext for Intel PowerManagement must do something here
(AppleIntelCPUPowerManagemen.kext).
I disassembled the kext with the otool, but it's hard, because I
have to learn how MacOS/Darwin works...
If anybody has a good tool for reverse-engineering kext code, please
help.
It seems, that the C-State levels are controlled my writing data so
some special addresses, so the kext should do something similar, but
I haven't found it yet...
Regards
Sven
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