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Question: iMac keeps waking from sleep every minute

Ever since upgrading to High Sierra, I've noticed that my iMac is constantly waking up from sleep to do some background processes for a minute or two, and then returns to sleep for 10-30 seconds before waking up again.


Is there a way to check what processes are constantly waking up my iMac?


Here's a snapshot of my Activity Monitor. Does anything look out of the ordinary?


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iMac with Retina 5K display, macOS High Sierra (10.13.2)

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Try disabling "Wake for network access" and "Enable Power Nap" in System Preferences > Energy Saver.

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Dec 21, 2017 9:20 PM in response to Fusion Factor In response to Fusion Factor

Does anything look out of the ordinary?


Various non-Apple "syncing" services, for one. Try disabling or otherwise preventing them from doing whatever they do, and observe the results.

Dec 21, 2017 9:20 PM

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Question: iMac keeps waking from sleep every minute