2017 Macbook Pro Sleep Issues

Question

Level 1

15 points

2017 Macbook Pro Sleep Issues

I have a 2017 non-touchbar MBP with a Samsung SH850 USB-C monitor I just purchased. Everything works great when the computer is on and I'm using it in clamshell mode.

However when I put it to sleep, the monitor tries to go to sleep, but after a few seconds I hear the "blonk" sound on the computer as if I had just plugged in the power, and the screen comes on black for a second, then goes back off. Then the process repeats itself, 1-3 minutes or so.

This also seems to disconnect the USB hard disks I have connected to the monitor's USB hub, as when I wake the system from sleep I see a ton of "Drive not disconnected / ejected properly' notifications on the right.

I also tried shutting down still connected via USB-C to the display, and the computer turned back on all by itself!

HELP!!!

MacBook Pro (13-inch, 2017, 2 TBT3), macOS Sierra (10.12.6), null

Posted on Oct 23, 2017 8:40 AM

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Answer 1

CarlAVII

Community Specialist

Oct 24, 2017 4:06 PM in response to MCusuma1

Howdy there MCusuma1,

It sounds like as your computer is going to sleep, it comes right back on of its own accord. We would suggest having a look at the following article about sleep/wake issues on one of our Macs:

If your Mac doesn‘t sleep or wake when expected

If your Mac wakes unexpectedly

Your Mac might wake for these activities:

Network activity that uses the Wake on Demand feature. Examples of network activity include iTunes sharing, photo sharing, printer sharing, file sharing, and using Back to My Mac.

Enhanced notifications from FaceTime, Messages, and other apps and services.

Bluetooth activity. To prevent Bluetooth devices from waking your Mac, choose Apple menu > System Preferences, then click Bluetooth. Click the Advanced Button, then deselect "Allow Bluetooth devices to wake this computer."

If the previous steps don't work

These additional steps may help identify or resolve the issue:

Reset the SMC.

Reset NVRAM.

Disconnect external devices other than your Apple keyboard, mouse, and display. If that resolves the issue, gradually reconnect your devices, testing each time, until you find the device that is interfering with sleep. Then check the documentation that came with the device, or contact the device manufacturer.

Start up in Safe Mode to see if the issue is related to non-Apple startup items, login items, or kernel extensions.

Try to isolate the issue by using another user account.

If you still see the issue, contact Apple Support.

Take care!

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Answer 2

AppleJoe

Community Manager

Oct 25, 2017 11:31 AM in response to MCusuma1

Thanks for the update MCusuma1. Looks like your next best bet will be to contact Apple Support.

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Answer 3

MCusuma1 Author

Level 1

15 points

Oct 25, 2017 7:00 AM in response to MCusuma1

I have tried all of these steps, and also did a clean install of MacOS High Sierra. The issue persists.

One thing I noticed last night is the issue only occurs when I tell the system to go to sleep via the Apple menu. If the system enters sleep via the sleep timer, the issue does not occur.

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Answer 4

MCusuma1 Author

Level 1

15 points

Oct 29, 2017 12:54 PM in response to MCusuma1

I have contacted Apple support and have even been to the genius bar and have been unable to solve the issue. It's pretty annoying how the only way to get this functionality is to buy the very expensive LG Ultrafines.

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