After I installed OS 12.5.1 on my iMacs, they no longer sleep, nor do my screen savers work. This is happening to both my 2015 iMac and 2020 iMac. I restored the defaults in the Energy saver preferences to no avail.
Is there anyone that has had this problem?
Any suggestions?
iMac 27″, macOS 12.5
Hi JFMorgan4568,
Thank you for posting in Apple Support Communities! Since noticing this issue, has your Mac been restarted?
Restarting your Mac, can help with many random issues we may face. To restart your Mac:
Shut down or restart your Mac - Apple Support
Have a good one!
As for restarts give this a try: boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.
NOTE: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following;
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files
Thanks for all of your replies. I did put the 2020 iMac into safe mode and the problem persisted.
Having spoken with two different support advisors it seemed the best answer was to reinstall the OS 12.5.1.
That still did not fix the issue until I fully erased my hard drive and reinstalled the 12.5.1 OS and the rest of my software. I chose not to recover anything from time machine.
It seems to be working as it should however it's only been a few hours since it's been up and running. I will update further if still have more issues.
Lastly, this issue happened to my 2015 iMac, and I have not addressed that one yet.
As it turned out I was wrong.
Having eased my hard drive and reinstalled the OS 12.5.1 did not resolve the sleep or screen saving issue on 2020 iMac. The problem with my computer not sleeping and ignoring the system preferences settings continues.
I am taking the computer to the Apple Store next week.
I have the same issue with MacBook Air M1 OS12.5.1.
Restart/shut down will not correct this!
Good Luck!
I upgraded to OS 12.6, the sleep now works as it should.
OS 12.5.1 sleep issue
