My iMac running OS High Sierra (installed more or less a year ago) recently started waking up in the middle of the night. We manually sleep the computer before retiring but it wakes up every night. We have tried turning the Wifi access off but it still wakes up on its own.
Ideas?
Thank you.
iMac, Mac OS X (10.1.x)
These steps and other helpful information can be found here: If your Mac doesn't sleep or wake when expectedIf your Mac wakes unexpectedly
Your Mac might wake for these activities:
- Network activity that uses the Wake on Demand feature. Examples of network activity include iTunes sharing, photo sharing, printer sharing, file sharing, and using Back to My Mac.
- Enhanced notifications from FaceTime, Messages, and other apps and services.
- Bluetooth activity. To prevent Bluetooth devices from waking your Mac, choose Apple menu > System Preferences, then click Bluetooth. Click the Advanced Button, then deselect "Allow Bluetooth devices to wake this computer."
If you have a MacBook Pro (2016 or later) or MacBook (Retina, 12-inch, 2017), note that these models are designed to start up when you open their lids or connect them to power.
These steps and other helpful information can be found here: If your Mac doesn't sleep or wake when expectedIf your Mac wakes unexpectedly
Your Mac might wake for these activities:
- Network activity that uses the Wake on Demand feature. Examples of network activity include iTunes sharing, photo sharing, printer sharing, file sharing, and using Back to My Mac.
- Enhanced notifications from FaceTime, Messages, and other apps and services.
- Bluetooth activity. To prevent Bluetooth devices from waking your Mac, choose Apple menu > System Preferences, then click Bluetooth. Click the Advanced Button, then deselect "Allow Bluetooth devices to wake this computer."
If you have a MacBook Pro (2016 or later) or MacBook (Retina, 12-inch, 2017), note that these models are designed to start up when you open their lids or connect them to power.
Thanks Starr.C. Very helpful. I deactivated the Bluetooth wake on Bluetooth access and my computer slept all night for the first time in two weeks. It is not so grumpy and much happier now. :-) 👍
Why does my iMac wake up in the middle of the night?
