computer wakes up at night

Question

computer wakes up at night

My new iMac 27" 5K screen will light up at night. I put the computer to sleep and the screen will light up for a minute or 2 and then go dark again. This is an issue because the computer is in the bedroom and the light wakes up my wife. Happy wife, happy life - and a tired wife isn't happy.

I've been dealing with this by shutting down in the evening, but I'm sure there is a simple item I can click to prevent this.

Thanks

iMac (Retina 5K, 27-inch, Late 2015), iOS 9.2

Posted on Jan 13, 2016 5:21 PM

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Answer 1

dialabrain

Level 10

136,331 points

Jan 13, 2016 5:34 PM in response to dazed&confuse

Make sure "Wake for internet access" and "Enable Power Nap" are disabled in System Preferences>Energy Saver.

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Answer 2

Jan 13, 2016 5:46 PM in response to dialabrain

Good ideas. I already had both of those unselected, so that's not the problem here. But thanks for replying.

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Answer 3

dialabrain

Level 10

136,331 points

Jan 13, 2016 6:07 PM in response to dazed&confuse

Welcome. Mine does not wake on its own so my only other thought is some third party app that's causing it to wake.

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Answer 4

chroot

Level 4

1,102 points

Jan 14, 2016 12:04 AM in response to dazed&confuse

If 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 your Mac doesn't sleep or wake when expected - Apple Support

We can consider the first bullet crossed off and the iMac shouldn't have enhanced notifications. Have you checked for bluetooth?

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