Resetting SMC is different for non-portable Macs, but it’s still easy enough and the problems it addresses are the same. If you have a Mac with Apple silicon, just restart. The boot time after resetting a machines SMC can be a bit longer than usual, that is normal. Reset the SMC: Reset the System Management Controller (SMC), which controls how your Mac manages power. Apple lists numerous signs that your SMC may need to be reset, including when your fans run at high speed, when the power button is unresponsive, or when your Mac shuts down unexpectedly. No big deal, but if you have made many changes to your hardware behavior you will want to adjust stuff like sleep behavior again. Note: you will need a wired, Apple-layout keyboard in order to perform this reset. After the Mac restarts for the second time, release the keys. Go to step 1 If you have a 2018 iMac Pro, head on over to this guide as this guide will not work for your particular machine.
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