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display does not go into sleep mode after OS upgrade big sur

My display does not go into sleep mode after the OS upgrade to big sur 11.4. Nothing I have done is working. The screensaver will not work either.

iMac Line (2012 and Later)

Posted on Jun 7, 2021 9:39 AM

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Posted on Jun 7, 2021 10:30 AM

Test to see if the problem is also present: a) in Safe Mode, and b) when logged in to a new user account



Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

4 replies

Jun 8, 2021 1:05 AM in response to hopko

It may be a one-off incident, but you do have a lot of old stuff that may cause issues with the more recent OS.


[Not Loaded] LaCieScsiType00.kext - com.LaCie.ScsiType00 (1.9.1 - SDK 10.5)

[Not Loaded] hp_io_printerclassdriver_enabler.kext - com.hp.hpio.hp-io-printerclassdriver-enabler (19.16.0 - SDK 10.10)

[Not Loaded] hp_fax_io.kext - com.hp.kext.hp-fax-io (5.22.0 - SDK 10.9)

[Loaded] ufsd_NTFS.kext - com.paragon-software.filesystems.ntfs (15.5.90 - SDK 10.10)

[Not Loaded] Seagate Storage Driver.kext - com.seagate.driver.PowSecDriverCore (5.2.7 (26995) - SDK 10.4)

[Not Loaded] BJUSBLoad.kext - jp.co.canon.bj.print.BJUSBLoad (10.75.21 - SDK 10.8)

[Not Loaded] CIJUSBLoad.kext - jp.co.canon.ij.print.CIJUSBLoad (16.0.10 - SDK 10.9)



The Lacie and Seagate stuff is very old, and not needed. Your mac does not need third party drive vendor software.

The Paragon software is needed if you want to read and write to NTFS formatted drives, but if you use make sure it is fully up to date.

[Edit: it seems to be]






display does not go into sleep mode after OS upgrade big sur

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