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Sleep function on my iMac

My computer accepts sleep function and blacks out but after 30minutes or so wakes up again, without prompting, to a bright blue screen (without screen saver). I have rebooted and switched off completely but this has made no difference to the problem.

iMac 21.5" 4K, macOS 10.14

Posted on May 25, 2020 7:35 PM

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Posted on May 26, 2020 9:55 AM

It's probably turning on because you have enabled Power Nap and Wake for network access. Try disabling both to see if that helps. If your iMac has an SSD then disable Put hard disks to sleep. If the HDD is put to sleep along with the computer, then there is a long delay when waked up because it takes the HDD time to spin up.


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Question marked as Top-ranking reply

May 26, 2020 9:55 AM in response to Subiman

It's probably turning on because you have enabled Power Nap and Wake for network access. Try disabling both to see if that helps. If your iMac has an SSD then disable Put hard disks to sleep. If the HDD is put to sleep along with the computer, then there is a long delay when waked up because it takes the HDD time to spin up.


May 25, 2020 8:50 PM in response to Subiman

You can save us asking dozens of questions by submitting a report...

EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.

http://www.etresoft.com/etrecheck


Pastebin is a good place to paste the whole report if you capture the URL while there…

https://pastebin.com/


Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

Sleep function on my iMac

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