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User profile for user: cowasaki_darren
cowasaki_darren Author
User level: Level 1
5 points

MacBook Pro (16-inch, 2019) 2.6 GHz 6-Core Intel Core i7 - Monterey 12.1 Fails to wake from sleep

I upgraded to 12.1 last week and since then if I leave it to go to sleep by closing it then pick it up more than a few hours later the battery is flat and it will not come out of sleep. I can take 15 minutes of messing around re-starting it, clearing the NVRAM etc


This has only happened since the upgrade and the computer was working fine until I did the upgrade. It is about 18 months old.


If I just close the lid and return a few minutes later it is ok.

MacBook Pro 16″, macOS 10.15

Posted on Dec 28, 2021 11:20 PM

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User profile for user: TheLittles
TheLittles
User level: Level 10
196,313 points

Posted on Dec 28, 2021 11:31 PM

cowasaki_darren Said:

"MacBook Pro (16-inch, 2019) 2.6 GHz 6-Core Intel Core i7 - Monterey 12.1 Fails to wake from sleep: I upgraded to 12.1 last week and since then if I leave it to go to sleep by closing it then pick it up more than a few hours later the battery is flat and it will not come out of sleep.[...]"

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Troubleshooting Mac Power:

A. Black Mac Screen:

Go Here: If your Mac doesn't Turn On or Start Up - Apple Support

Using External Devices: Try Resetting the SMC and NVRAM, but this time, using an external keyboard. Connect an external monitor and see if you get an output.


B. Mac Power Issues:

Try a New Charger:

If it is currently charging from a charger, then use a new charger:


C. A Few Links to Refer to Power:





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User profile for user: TheLittles
TheLittles
User level: Level 10
196,313 points

Dec 28, 2021 11:31 PM in response to cowasaki_darren

cowasaki_darren Said:

"MacBook Pro (16-inch, 2019) 2.6 GHz 6-Core Intel Core i7 - Monterey 12.1 Fails to wake from sleep: I upgraded to 12.1 last week and since then if I leave it to go to sleep by closing it then pick it up more than a few hours later the battery is flat and it will not come out of sleep.[...]"

-------


Troubleshooting Mac Power:

A. Black Mac Screen:

Go Here: If your Mac doesn't Turn On or Start Up - Apple Support

Using External Devices: Try Resetting the SMC and NVRAM, but this time, using an external keyboard. Connect an external monitor and see if you get an output.


B. Mac Power Issues:

Try a New Charger:

If it is currently charging from a charger, then use a new charger:


C. A Few Links to Refer to Power:





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MacBook Pro (16-inch, 2019) 2.6 GHz 6-Core Intel Core i7 - Monterey 12.1 Fails to wake from sleep

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