Level 1

21 points

The computer was restarted because of a problem.

panic(cpu 2 caller 0xffffff7f929f797b): GPU Panic: mux-regs 4 3 3f 1f 0 0 severity 3 WS-ready 0 switch-state 0 IG FBs 1 EG FBs 0:0 power-state 4 3D idle HDA idle system-state 2 power-level 5:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.

Getting this error message whenever using my MacBook Pro 16" after sleep for more than 1hr. Now getting quite irritating. Called Apple Support and ran Disk diagnostics, Rebooted in diagnostic mode for hardware test, did the Reset of SMC controller due a one sec burst of fan activity when restarting. All diagnostics reporting no issues.

I think more users need to complain to Apple Support to get this issue escalated. The rep I talked to gave me the impression that this is a problem that only I am having.

Posted on May 2, 2020 6:28 PM

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mkbrnrht

Level 1

4 points

Posted on May 7, 2020 7:00 PM

This same issue has been plaguing me for weeks with a brand new MacBook Pro 16". Came across the following:

https://forums.macrumors.com/threads/sudden-graphics-corruption-16-macbook-pro.2230856/

"Okay so I'm only seeing it in Chrome, at least today. I turned off Chrome's hardware acceleration and it seems to have disappeared... Not really sure whats going on."

I did made the same change in chrome settings just now and it fixed it instantly. Where as before the machine would crash coming back from sleep, now goes into sleep instantly and wakes just as it should.

Again, I just tried this a moment ago, but it seems to do the trick. I'll update if the problem comes back.

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38 replies

Aug 6, 2020 1:23 AM in response to digitalsil

Leaving my MacBook at the apple store for a couple of weeks means I don't work for a couple of weeks.

I can't do that, especially when there's no guarantee it is actually going to be fixed, or that it would only take two weeks.

I'd rather just switch the power nap off than lose work.

I expected apple to do a bit more about this, and at least acknowledge there's something wrong here.

I will continue to buy the MacBook Pro in the future, as it is really usually the best laptop out there, but my next purchase is going to be a few months in after it is released, just to make sure there are no unexpected surprises.

I've had enough of this issue and the "butterfly" keyboard of the previous models.

sparktoronto Author

Level 1

21 points

May 2, 2020 7:41 PM in response to Grant Bennet-Alder

Changes to preferences in Energy Saver does nothing to fix this problem. Also not related to battery level as it happens when battery is near 100%.

May 8, 2020 2:43 AM in response to Moshe Gottlieb

WhatsApp desktop isn't the culprit - crashed again when it wasn't running.

I don't think I have any Electron based apps running.

sparktoronto Author

Level 1

21 points

Jun 23, 2020 9:21 AM in response to gitochige

I also did a fresh re-install without any third party software and problem continues.

I agree. We expect that Apple computers should work with trusted third party applications.

sparktoronto Author

Level 1

21 points

Jul 15, 2020 7:48 PM in response to snowdoniafan

I just updated macOS to 10.15.6.

I let my computer sleep and after 1hour it didn't do the normal crash,

It was getting worse before where I would have to restarted maybe three times just to get past the progress bar on startup.

Seems much more stable right now.

Praying it's not a hardware issue.

Definitely not a third party app in my case as some users seem to insist in defence of Apple.

Will continue contacting Apple Support until they give me an explanation or appropriate resolution for this incredibly frustrating experience with a very expensive purchase.

Good luck all and hopefully Apple will acknowledge this issue and provide some acceptable guidance or public update.

Aug 6, 2020 12:00 AM in response to sparktoronto

Hi everybody.

Two weeks ago I did the same thing as Sparktoronto, because my patience was over. Having tried everything, even a new clean install of Catalina 10.15.6 my Mac wouldn't even finish the installation. So I took my 3 month old Mac to the reseller Pro Warehouse were I always buy my stuff. They had the machine for 9 days and yes they came to the same conclusion and replaced the logic board an touchpad unit. So to everybody with this issue off hissing vent quits and unexpected shutdowns, endless opening/closing lid issues; apparently there's something wrong with some logic boards. If you have still a warranty, go for the replacement at your reseller.

My MacBook Pro 16" works good again with Catalina 10.15.6 installed. It was no software issue but Apple Hardware that failed!

Good luck out there

sparktoronto Author

Level 1

21 points

Aug 6, 2020 6:58 AM in response to Moshe Gottlieb

This issue has gotten progressively worse for me. Now I can only boot up in SAFE MODE as it continually restarts and crashes with the loud fan noise. In my case, the Apple Store technician ran a test and observed problems for about 30min. They told me it will take max 3 days to repair. I am keeping my MacBook Pro until they call me when the parts come in. Resellers or other authorized stores want to keep it for full 2 weeks which I also cannot agree to. Definitely not satisfied with Apple quality control on their top of line laptop. Practically I am forced to get the Apple Care now because I cannot trust them anymore.

Jul 12, 2020 8:45 AM in response to snowdoniafan

RE: safe Mode:

Conventional Wisdom is "happens in Safe mode, but not in regular mode, means it's something you added"

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The computer was restarted because of a problem.