Macbook Pro 16 inch panic (PowerPlay Failed Resume)

I am facing the following panic every morning. The Macbook seems restarted itself every night and failed?


This panic happened from last week suddenly. I tried several ways but the issue is still there.


  1. unplug the external monitor connector after it went sleep.
  2. unplug every lines and make it naked after it went sleep. still saw the panic!!!!


Is anyone facing the same issue with me?


panic(cpu 0 caller 0xffffff7f94d4b97b): GPU Panic: mux-regs 5 3 7f 1f 0 0 severity 3 WS-ready 0 switch-state 0 IG FBs 0 EG FBs 2:0 power-state 0 3D busy HDA idle system-state 2 power-level 5:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.

Backtrace (CPU 0), Frame : Return Address
0xffffff82027d3700 : 0xffffff8010d215cd 
0xffffff82027d3750 : 0xffffff8010e5a3c5 
0xffffff82027d3790 : 0xffffff8010e4bf7e 
0xffffff82027d37e0 : 0xffffff8010cc7a40 
0xffffff82027d3800 : 0xffffff8010d20c97 




MacBook Pro 16", macOS 10.15

Posted on May 5, 2020 3:05 PM

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Question marked as Top-ranking reply

Posted on Jul 13, 2020 6:49 AM

I actually don't think it is strictly a software issue. Several people have said the problem was resolved by a logic board replacement. It may be a software issue in the sense of an incompatibility between the OS and some characteristic of the processor or other hardware, but from my investigation and other peoples' experience, hardware is almost certainly a factor.


The specs for my two 16" machines --one with the problem and one without--only differ in a couple of respects. The one without the issue is a 2.3 GHz 8 core i9 processor, 64 GB RAM and 2 TB SSD and the machine with the problem is 2.4 GHz, 8 core i9, 64 GB RAM and 4TB SSD.


Both have the same graphics card--Radeon Pro 5500M 8GB--and both are running macOS 10.15.5 (19F101). The only apparent differences between the two machines are the processor and the 4TB drives, and the fact that the problem machine was built a couple of months later. Everything else seems identical including Boot ROM and Kernel Version.


Whether or not a coincidence, the problematic machine has the same specs as snowdoniafan's. I do see another poster reported the problem with a 2.3 GHz, 16 GB model, but didn't say what size SSD. As I said, all things considered, including yosefitche's report that a logic board replacement cured the problem, leads me to believe hardware plays some role in this. We will see what happens when I get the new machine back from Apple.


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35 replies

Jul 12, 2020 9:59 AM in response to ddbullfrog

The current work-around proffered by Apple support is to be sure you are running 10.15.5 fully update to build 19f101,

then disable


System preferences > Energy saver ...


Power Nap ...


in both battery and Power adapter settings


if that does not resolve the issues, you have a unique problem, and should use the "Contact Support" link to get additional guidance or arrange for service, as appropriate.


.

Jul 12, 2020 10:08 AM in response to Grant Bennet-Alder

Reading these threads in detail as I have, there are a large number of customers who have tried the basic* “disable power nap”, “workaround”, and found it to not resolve the issue.


I and others have tried this and all other suggestions eg disabling graphics switching, enabling / disabling prevent wake.


On call with Apple support I ran through this as others have and they do at least acknowledge it as an issue (albeit, claiming it as a software issue, of which I am not convinced).


I do not think it is accurate or fair to describe this as a unique problem. There are many who have the same issue and have invested significant hours trying the same suggestions in good faith.


*As you will know from my other thread I have tried this and all other posited workarounds. In fact, I’ve also tried pmset config to disable hibernation altogether, increase those specific timeouts, hardwire dGPU or iGPU only and no resolution. And to recap, this is the case from a clean install, where onboard hardware diagnostics does not fail.

Jul 12, 2020 10:35 AM in response to snowdoniafan

Readers here, myself included, are other Users like you, NOT Apple employees.


The Apple-supplied work-arounds suggested should solve all these GPU-panic-after-sleep issues. And if they do not, it is up to you to push your case with Apple support until you get one of:

• a filed Bug report from the First Responder (who is trained to be NICE, not technically deep), or

• a session with a second-level support person that ends in resolution or a filed bug report, or

• an arrangement for mail-in or in-person service.


All I can do is provide the best guidance as I know it. The first responders at Apple support do not work for me (they work for you) and you need to demand they step up to solve any remaining issues after you have diligently applied their recommended work-arounds.

Aug 13, 2020 7:02 AM in response to uogbuji

An update: None of the power management settings suggestions worked. The machine was crashing every time it went to sleep. Then it started to get so bad that I'd get the "This machine restarted because of an error" grey on black screen, then the progress indicator, which would get around two-thirds before it went blank, the fans blasted again, and after a moment the grey/black error would come back, and this boot loop cycle would sometimes happens twice or thrice in a row. If thrice I'd get a blank screen with a grey stop sign, and I'd have to wait several minutes before attempting a boot again. In all cases, it would eventually reboot again, after so much babysitting, but the very next time it went to sleep it would die once more, which basically rendered it useless for productivity. I have video of the boot loop, and I'll try to post it. In any case, whenever I finally get it to boot, it shows the "GPU panic" error report. I finally gave up and took it back to the Apple Store two days ago. There were no Genius Bar appointments for over a week but they let me in when they looked up my history with this problem. I demonstrated the problem to the tech (easy enough given its consistency). He suggested that last time the logic board had been replaced at a repair center and this time he would order the logic board & Touch ID kit and have the repair done there, in store, where they're become familiar with my travails. Estimated 7 days, so fingers crossed I'll finally be done with this nightmare when I get it back.

Sep 16, 2020 11:17 PM in response to ddbullfrog

I had to send mine in for repair and they replaced the logic board, I’m guessing the logic board is the motherboard because, it said they literally replaced everything in the computer even the touchbar, processor, SSD and ram as well as the audio jack. All my audio connections worked better once I got it back from repair a lot of things worked better than it did when I first got it, maybe they needed to recall these but never went through the process.

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Macbook Pro 16 inch panic (PowerPlay Failed Resume)

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