How to enable hibernation on M1 Mac

Question

I am trying to enable Windows-like hibernation (powering off the device) on an M1 Mac mini. Current power mode configuration of any Mac can be displayed with pmset -g command, and this command's output does not include a hibernatemode entry. I try to enable hibernation with sudo pmset -a hibernatemode 25 where 25 indicates power-off hibernation. Unfortunately this doesn't power the device off because the power light is still on when I put the device to sleep. Curiously enough, running pmset -g again still does not include a hibernatemode entry.

Is hibernation removed in new M1 Macs or macOS Big Sur? If not, what is the correct way to enable it?

Answer 1

Hibernation on Mac m1 just released yesterday. Just update your mac to MacOS Big Sur 11.3 to enable hibernation.

You can see the change log here:

https://support.apple.com/en-us/HT211896

to enable it you can use this command:

sudo pmset -a hibernatemode 25

just for your information based on man pmset

SAFE SLEEP ARGUMENTS
     hibernatemode supports values of 0, 3, or 25. Whether or not a hibernation image gets written is also dependent on the values of standby
     and autopoweroff

     For example, on desktops that support standby a hibernation image will be written after the specified standbydelay time. To disable
     hibernation images completely, ensure hibernatemode standby and autopoweroff are all set to 0.

     hibernatemode = 0 by default on desktops. The system will not back memory up to persistent storage. The system must wake from the
     contents of memory; the system will lose context on power loss. This is, historically, plain old sleep.

     hibernatemode = 3 by default on portables. The system will store a copy of memory to persistent storage (the disk), and will power memory
     during sleep. The system will wake from memory, unless a power loss forces it to restore from hibernate image.

     hibernatemode = 25 is only settable via pmset. The system will store a copy of memory to persistent storage (the disk), and will remove
     power to memory. The system will restore from disk image. If you want "hibernation" - slower sleeps, slower wakes, and better battery
     life, you should use this setting.

     Please note that hibernatefile may only point to a file located on the root volume.

So by default, the hibernate mode for a MacBook is 3, other device(imac, mac mini) is 0.

Actually, 3 is safe mode and uses very low energy also wake up faster, my MacBook can live for weeks just using this mode. So I recommended staying in default mode.

Answer 2

See the attached image to create a shorcut in the Shorcuts app and add a keyboard shorcut to run it. This can be done in the (i) Menu -> Details Tab

SCRIPT UPDATE

# Stopping services conflicting with hibernate
pkill SIGSTOP AMPDeviceDiscoveryAgent
pkill SIGSTOP AMPDevicesAgent
tmutil stopbackup

# Change pmset settings
sudo pmset -a hibernatemode 25
sudo pmset -a ttyskeepawake 0
sudo pmset -a tcpkeepalive 0
sudo pmset -a womp 0
sudo pmset -a powernap 0
sudo pmset -a networkoversleep 0

# Wait for OS sync new settings
sleep 3

# Call hibernate process
pmset sleepnow
# Wait 30 sec or more for macOS to hibernate

# Stops execution and continues when waking up. 
sleep 15

# Set pmset hibernatemode back
sudo pmset -a hibernatemode 3

# Loading stopped services
launchctl start com.apple.AMPDevicesAgent
killall Finder