Use the command sudo pmset -b to change any setting that you have which is different from the above values. The settings that enable deep sleep/hibernate to disk is shown below If for some reason, you mess up your power management settings, you can go to System Preference s/Energy Saver and click on Restore Defaults to get the default power management settings back
To get your current power management settings run pmset -g custom Start Terminal (Go to Finder/Go/Utilities/Terminal or use Spotlight Search and type Terminal) These settings are enabled via the command pmset which is available via Terminal Here is some help with pmset
A notebook with a fully charged battery can remain in standby for up to thirty days without being plugged in to power.Īfter some trial and error, I managed to find the setting that will enable my MacBook Pro to go into “deep sleep/safe sleep/hibernate to disk” when it went into sleep mode. Standby extends how long a notebook computer can stay asleep on battery power. Then, the power turns off to some hardware systems such as RAM and USB buses. During standby, the state of your session is saved to flash storage (SSD).
Earlier models enter standby after just over an hour of sleep.
Mac computers manufactured in 2013 or later enter standby after being in sleep mode for three hours. Standby Modeįor Mac computers that start up from an internal SSD, macOS includes a deep sleep mode known as Standby Mode. Below is the part in the above article referring to deep sleep. In the above article, it did list that there was a Standby Mode which would put MacBooks to deep sleep (aka hibernate to disk) however that happened only after the MacBook was in sleep mode for 3 hours! I was looking for something that will enable it much sooner. Hmm, now that I know what it is called, and that it can be enabled (at this stage, only when your battery is running extremely low), I started looking for a way to enable it. Aha, Apple calls hibernate to disk Safe sleep, which only happens when your battery is running extremely low. I managed to find an article from Apple that listed all the supported sleep modes, and oh wait a minute, what is that I see. To my surprise, when I went to configure hibernate to disk on my new MacBook Pro, my previous steps didn’t work ? Ok, I was running MacOS Sierra now, however I expected the process to be the same.īeing the person that rarely gives up (and hibernate to disk was a feature I really really wanted), I started researching on what had happened to it. True hibernation (hibernate to disk) is same as the hibernate mode you get with Windows. In my view this is much better than sleep mode because my system state is written to disk, instead of being kept in RAM, which needs to be powered on (this is sleep mode).
One of the features I absolutely loved was hibernate to disk. I had been using a MacBook Pro 13 inch last year, running OS X Mavericks. I would happily pay more to get 32GB on it. I absolutely love my MacBook Pro 15inch, it runs anything I throw at it, my only gripe is that the memory cannot be upgraded beyond 16GB. I decided to go back to a MacBook Pro a few months back, because my Surface Pro 3 was just not capable of running virtual machines. I had meant to have this blog posted a few months back, unfortunately it got stuck on my todo list and never quite made it out, till now.