Computer does not enter sleep mode properly

Question

Computer does not enter sleep mode properly

My Mac is supposed to be in sleep mode after 15 minutes. After the latest update of Mojave, i will approach the computer and see that it is not in sleep mode, but is stuck on the log in screen and the colors are all contorted and with a weird color scheme with a lot of baby blue and pink colors.

When I activate the keyboard or trackpad, the computer changes to the normal color scheme for the sign on screen.

Something is preventing the computer from actually going to sleep or low-power mode.

iMac Line (2012 and Later)

Posted on Jan 5, 2019 12:04 PM

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Answer 1

Top-ranking reply

John Galt

Level 10

146,402 points

Jan 5, 2019 12:17 PM in response to jonfromwilsonville

Please read If your Mac doesn't sleep or wake when expected - Apple Support.

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Answer 2

Jan 5, 2019 4:26 PM in response to Ruskes

Not sure how to proceed with your recommendations nor do I understand what you're suggesting- looks them same to my attachment above.

Unless something stands out here, there seems to be a problem with an application that has changed the sign-out, sleep and other schedules and this has not always been the case, perhaps some malware...

I have captured the screen of my original question, my computer is supposed to be sleeping and yet it is sitting on this messed up lock screen instead-

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Answer 3

Ruskes

Level 4

1,421 points

Jan 5, 2019 12:43 PM in response to jonfromwilsonville

There are 2 ways to look what is going on

1 use Terminal app located in your Utility folder and copy paste this command

pmset -g assertions

It should display what is keepng it from going to sleep

2 In Activity Monitor right click on on empty space in the coulomb bar and add the "Preventing Sleep" to it to see

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Answer 4

Ruskes

Level 4

1,421 points

Jan 5, 2019 2:07 PM in response to jonfromwilsonville

You are correct wrt IODisplayWrangler it is normal.

So you do not see anything preventing it from shutting down the display and go to sleep mode ?

If you know how to use the Console let me know so we can do something there

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Answer 5

Jan 5, 2019 2:17 PM in response to Ruskes

Here is what is displayed in the Terminal:

Assertion status system-wide:

BackgroundTask 0

ApplePushServiceTask 0

UserIsActive 1

PreventUserIdleDisplaySleep 0

PreventSystemSleep 0

ExternalMedia 0

PreventUserIdleSystemSleep 1

NetworkClientActive 0

Listed by owning process:

pid 59(UserEventAgent): [0x00000191000b8210] 00:02:56 BackgroundTask named: "com.apple.backupd-auto"

Created for PID: 90.

pid 720(backupd): [0x000001af0001823e] 00:02:26 PreventUserIdleSystemSleep named: "Time Machine backup"

pid 720(backupd): [0x000001af000b823d] 00:02:26 BackgroundTask named: "Time Machine backup"

pid 117(hidd): [0x0000002500098046] 00:00:00 UserIsActive named: "com.apple.iohideventsystem.queue.tickle.4294968649.3"

Timeout will fire in 900 secs Action=TimeoutActionRelease

pid 274(mds_stores): [0x00000215000b8278] 00:00:44 BackgroundTask named: "com.apple.metadata.mds_stores.power"

pid 410(sharingd): [0x0000023200018282] 00:00:14 PreventUserIdleSystemSleep named: "Handoff"

Kernel Assertions: 0x10c=USB,BT-HID,MAGICWAKE

id=502 level=255 0x4=USB mod=12/31/69, 4:00 PM description=com.apple.usb.externaldevice.14300000 owner=IOUSBHostDevice

id=504 level=255 0x4=USB mod=12/31/69, 4:00 PM description=com.apple.usb.externaldevice.14600000 owner=MacBook Air SuperDrive

id=505 level=255 0x100=MAGICWAKE mod=12/31/69, 4:00 PM description=en1 owner=en1

id=506 level=255 0x8=BT-HID mod=12/31/69, 4:00 PM description=com.apple.driver.IOBluetoothHIDDriver owner=AppleHSBluetoothDevice

id=507 level=255 0x8=BT-HID mod=12/31/69, 4:00 PM description=com.apple.driver.IOBluetoothHIDDriver owner=AppleHSBluetoothDevice

Idle sleep preventers: IODisplayWrangler

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Answer 6

Ruskes

Level 4

1,421 points

Jan 5, 2019 2:28 PM in response to jonfromwilsonville

Here is what I would fix..

pid 720(backupd): [0x000001af0001823e] 00:02:26 PreventUserIdleSystemSleep named: "Time Machine backup" 
   pid 410(sharingd): [0x0000023200018282] 00:00:14 PreventUserIdleSystemSleep named: "Handoff"

also all below

Kernel Assertions: 0x10c=USB,BT-HID,MAGICWAKE

   id=502  level=255 0x4=USB mod=12/31/69, 4:00 PM description=com.apple.usb.externaldevice.14300000 owner=IOUSBHostDevice

   id=504  level=255 0x4=USB mod=12/31/69, 4:00 PM description=com.apple.usb.externaldevice.14600000 owner=MacBook Air SuperDrive

   id=505  level=255 0x100=MAGICWAKE mod=12/31/69, 4:00 PM description=en1 owner=en1

   id=506  level=255 0x8=BT-HID mod=12/31/69, 4:00 PM description=com.apple.driver.IOBluetoothHIDDriver owner=AppleHSBluetoothDevice

   id=507  level=255 0x8=BT-HID mod=12/31/69, 4:00 PM description=com.apple.driver.IOBluetoothHIDDriver owner=AppleHSBluetoothDevice

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Answer 7

Jan 5, 2019 2:02 PM in response to Ruskes

IODisplayWrangler is the only thing showing for solution #1. This appears to be a normal operation for the screen dimming. Option #2 looks normal as well.

Thank you for the assist.

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Answer 8

Jan 5, 2019 2:03 PM in response to John Galt

Thank you. I am not detecting any issues with the sleep/wake operation, it is more about the the weird screen colors and behavior when trying to sleep.

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Computer does not enter sleep mode properly

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