Sleep Wake Failure

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Level 1

12 points

Sleep Wake Failure

iMac reboots in sleep modus after High Sierra Upgrade "Sleep Wake Failure"

The problem still remains after update to macOS High Sierra version 10.13.2. (iMac model 13.1, late 2012)

When High Sierra was released I took the upgrade like I always do. When my iMac goes to sleep my system is rebooting after a different period of time.

The startup sound plays twice. Then the apple logo appears on the screen with and progress bar (as if something were installing).

Once High Sierra starts it displays a message "Your computer was restarted because of a problem: "Sleep Wake Failure"

I can’t find a solution for the problem in Apple Support or on the internet.

Looking for help.

iMac, macOS High Sierra (10.13.2), iMac model 13.1, late 2012

Posted on Dec 11, 2017 1:11 PM

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Answer 1

Jan_b_300 Author

Level 1

12 points

Jan 22, 2018 11:14 AM in response to Jan_b_300

In my case even a clean installation didn't fix the problem of Sleep Wake Failure.

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Answer 2

Jan_b_300 Author

Level 1

12 points

Jan 25, 2018 1:42 PM in response to Jan_b_300

Did a clean install of version 10.13.3 on my iMac late 2012, no other programs installed. The Sleep Wak Failure is still there.

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Answer 3

Feb 1, 2018 2:38 PM in response to Jan_b_300

Hi. I've been having this problem for a few weeks now and even with a software upgrade yesterday it is still happening. Did you fix it? I'd love to know how. Thanks.

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