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screen saver not working

I have my screen saver to come on after 1 minute of no activity. It will not come on by itself. I have tried rebooting the whole system to be sure. I implemented a Hot Corner so I could manually put my screen to sleep. It sleeps and then wakes back up in 10 seconds. I am afraid I will ruin the screen by it being on all the time and I have run out of things to do about it.

iMac Line (2012 and Later)

Posted on Jan 20, 2020 4:21 PM

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Question marked as Top-ranking reply

Posted on Jan 21, 2020 10:07 AM

To trouble shoot further you can:


Try a SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot and test will take a little longer as caches get rebuilt.

This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.


Test issue in another user (or guest user) account  https://support.apple.com/en-us/HT204443

This will tell you if it a universal issue or isolated to your user/admin account. 


2 replies
Question marked as Top-ranking reply

Jan 21, 2020 10:07 AM in response to Might4Right

To trouble shoot further you can:


Try a SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot and test will take a little longer as caches get rebuilt.

This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.


Test issue in another user (or guest user) account  https://support.apple.com/en-us/HT204443

This will tell you if it a universal issue or isolated to your user/admin account. 


screen saver not working

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