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[Solved] Brightness Issues - ThinkPad X201 macOS 10.12.6

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Recently I've installed macOS 10.12.6 (Sierra) on my ThinkPad X201, and I could get everything working, except for the brightness.


I can't make it work, I've applied a bunch of patches on DSDT and couldn't get working, so I decided to apply these patches in SSDT and... I couldn't get working as well.


After a while doing some search I realize that for macOS 10.12.4 and above, the patches that I was applying doesn't work, and I would have to use the AppleBacklightInjector kext patch.


I've tried the kext patch and doesn't work too. Am I doing something wrong? or my system doesn't support MacOS brightness control at all?

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Do you have CPU power management/SpeedStep properly working for your i5-560M?


I ask because:

  • your files include a CPU power management SSDT table generated by Pike R Alpha's tool
  • your Clover config does not generate P-States/C-States
  • your Clover config has AICPUPM patch enabled

i.e. you use the CPU power management setup usually applicable to SandyBridge/IvyBridge, not to Arrandale.

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