Standby mode extends how long a laptop can stay in deep sleep on battery power, which could be as long as 30 days. During this deep sleep mode, the state of the user’s session is copied to the SSD and macOS turns off some hardware systems, such as RAM and USB buses. These Macs enter standby after being in sleep mode for three hours, while earlier models enter standby after just an hour of sleep. Standby mode is limited to Macs that start up from an internal flash drive. macOS will also turn off some of its hardware systems to save power. Standby saves the user’s current session – open applications, files and windows – on their hard drive.

Some computers enter special sleep modes called standby and safe sleep, helping them conserve even more energy. Things change when you leave a Mac idle for a long time. You may already be familiar with the ‘short term’ energy-saver settings in macOS: which switches off the display and puts the hard disk(s) to sleep after a short period of inactivity. What Happens When You Leave Macs Idle for a Longer Period of Time? Do you get the feeling that your Mac is really slow to wake up from sleep mode? Do you see a black screen for a few seconds instead of the login screen after opening your MacBook’s lid and you don’t know why? Well, you’ve come to the right place, since we’ll explain why your Mac is slow to wake up and how this relates to Apple’s energy saving features built into macOS.

Mini mac is running slow