Intel Macs tell you why they last shut down, in the ‘shutdown cause code’ written to the log by their System Management Controller. What do Apple silicon Macs do?
pmset
Using a combination of iohid and BatteryCenter, macOS checks attached UPS and wireless keyboards, mice and trackpads ever 2-5 seconds.
Fed up with your M1 MBP always starting up, or waking from sleep, when you open its lid? How might you change that behaviour?
There’s no SMC, so you can’t reset it. Although there’s still NVRAM (PRAM), that can’t be reset either: full details of both for M1 models.
From hardware diagnostics to pmset and resetting the SMC, all you need to know about diagnosing wake and sleep problems.
FileVault is most secure and robust when you shut your Mac down. But there are many times when you want full protection when only sleeping.
The Eclectic Light Company 