Your Mac goes all sluggish, you open Activity Monitor, and there at the top of the CPU list is kernel_task, taking 100% or more. Why?
SMC
When you wake your laptop up in the morning, it’s clear it has been awake half the night. How to ensure it gets a proper night’s sleep.
How to reset them, and what they do. Includes coverage of the SMC functions in T2 chips, and how to reset them too.
Diagnostic, Recovery, Safe, Startup Manager, Verbose, reset SMC/NVRAM, firmware restore, Target Disk/Display, Single-User (SUM) in outline.
From hardware diagnostics to pmset and resetting the SMC, all you need to know about diagnosing wake and sleep problems.
What should you do with a Mac whose fans keeping coming on full blast, with high CPU loads from kernel_task, and sluggish performance?
Adds details of the sequence of screens displayed at each stage, to help diagnose boot problems.
How did it take Apple so long to tell users of the imminent death of Back to My Mac? And why does Apple replace fully-functional Smart Keyboards?
Single-diagram summary of how a modern Mac starts up in macOS 10.12 or 10.13, from pressing the Power button to running the kernel.
Important info about resetting the NVRAM with a firmware password, and new procedures for resetting the SMC in Macs with T2 chips.
