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Macbook Sleep Wake failure in EFI (Failure code:: 0xffffffff 0x0000001f)

I have two macbook's, one model end 2018 and one model begin 2019.

They both suffer from the same problem with a fresh installation (also reset NVRAM, PRAM, SMC).


The crash reason: Sleep Wake failure in EFI

Failure code:: 0xffffffff 0x0000001f


I already contacted Senior Support for this and have a running case for both.


If you run into the same problem, please let me know here.

To trace down the problem more info of different devices can be useful.


If I get feedback that solves it, I'll post it here.



MacBook Pro 15”, macOS 10.15

Posted on Nov 18, 2019 1:33 AM

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Posted on Apr 19, 2020 8:00 AM

I had the same problem, and finally found a very odd solution. In my case, after a lot of frustrating work, I traced the problem to an old USB hub I was using on my new mac. Once I disconnected the old USB hub, the problem immediately stopped. In my case, it was surprising and very lucky to discover that the problem seemed to be associated with an attached electronic component. Hope this helps you.

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Macbook Sleep Wake failure in EFI (Failure code:: 0xffffffff 0x0000001f)

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