My computer wakes up at 5:59:39 every morning. How to stop that from happening

power-managementsleep-wake

For some reason my 2017 iMac running macOS 10.14.6 keeps waking up from sleep at exactly 5:59:39 AM every morning. If I look at the logs using pmset -g log at this time it consistently reports:

2019-11-07 05:59:39 -0500 Assertions            PID 77(powerd) Created UserIsActive "com.apple.powermanagement.wakeschedule" 00:00:00  id:0x0x900009fac [System: PrevIdle PrevDisp DeclUser kDisp]
2019-11-07 05:59:39 -0500 Assertions            Kernel Idle sleep preventers: IODisplayWrangler
2019-11-07 05:59:39 -0500 Notification          Display is turned on
2019-11-07 05:59:40 -0500 Assertions            PID 77(powerd) Created UserIsActive "com.apple.powermanagement.wakeschedule" 00:00:00  id:0x0x900009faf [System: PrevIdle PrevDisp DeclUser kDisp]
2019-11-07 05:59:41 -0500 Assertions            PID 77(powerd) TimedOut UserIsActive "com.apple.powermanagement.wakeschedule" 00:00:02  id:0x0x900009fac [System: PrevIdle PrevDisp DeclUser kDisp]
2019-11-07 05:59:41 -0500 Assertions            PID 77(powerd) TimedOut UserIsActive "com.apple.powermanagement.wakeschedule" 00:00:01  id:0x0x900009faf [System: PrevIdle PrevDisp DeclUser kDisp]

I don't understand what those log entries mean and searching for the terms in them hasn't yielded anything revealing so far.

In the Energy Saver system preferences, I have the following options enabled:

  • Prevent Computer from sleeping automatically when the display is off
  • Wake for network access
  • Enable Power Nap

In the "Schedule" settings the "Start up or wake" setting is disabled.

Why is my computer waking up? And what can I do to stop it?

Best Answer

You should use the Terminal command pmset -g sched to determine if there is any repeated wake from sleep scheduled or some other app/system service which has set a wake event.

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