Macbook pro 16 2019 freezes randomly and restarts

Ok, try this. Boot machine with the shift key pressed(safe mode, if you have "filefault" enabled press shift key again after entering your password). Let the machine stand for a few minutes in safe mode then reboot, press alt command p and r to reset pram.

Now test your machine.

Please let me know if this fixes anything.

Yep indeed it is HW. I just escalated my case to the executive team because I was not getting any feedback for what they are waiting on. They finally got back to me and gave me more info.  They are waiting on a logic board.  I guess they are plumb out of them and they need to get it from China.  They confirmed the GPU failure is caused by the logic board and is indeed required to fix. They said part of the delay is when you have an upgraded GPU, memory, SSD, its configured as a customization and they need a matching logic board.

So for those hoping and waiting... don't hope for a software fix. This is a hardware problem and its confirmed by Apple.

Restart on wake is generally the GPU panic issue and is evidenced by a dialog box after reboot stating a problem has occurred and if you want to send it to Apple. If that is what you have it’s the bad problem and the freezing usually occurs before the panic issues. So I would assume you have the worst problem and it’s hardware related. You are recommended to get it to Apple and get it repaired.

Mine failed before taking to the apple store and I just showed them my video I took. All you need to look for in the activity monitor logs is the signalHardwareError ... GPURestart. Show them that, it's definitive proof.

I should have my repaired machine tonight.

This almost mirrors the chain of events that happened with my 2019 16’ MBP! Spent hours on the phone with Apple support, re-imaged multiple times, etc. & at the end of the day I received a full refund from Amazon (they were excellent)! I then purchased a MacBook Air & haven’t had one single problem! It’s HW, Apple refuses to admit it, literally hundreds (if not thousands) of MBP owners are experiencing the same issues & it won’t be fixed by some miracle SW update no matter how long you wait! Do what you can to get your money back people, that’s your only hope to “fix” this problem unfortunately!!!

For me I got this same problem at first day using my macbook pro 16inch; you can open you activity monitor, and search the name of process highly occupying cpu, for me its a process related to icloud, 160%!! and I shut down the icloud service, which i pay for 100g, on my computer. And no freeze nor shut down later. You can try shutting down the icloud service.

Apple escalated my case to Engineering, and they determined from my logs that the freezes were correlated with the Superhuman email app. Something to do with a 'Video Wake Lock' event.

Does anyone who's also experiencing these freezes also have Superhuman installed?

kinkarso wrote:

Apple escalated my case to Engineering, and they determined from my logs that the freezes were correlated with the Superhuman email app. Something to do with a 'Video Wake Lock' event.

Does anyone who's also experiencing these freezes also have Superhuman installed?

Haha ... yeah... don't let them tell you this. Send it in. Its a hardware problem. They tried to tell me that mine was due to the MBP being on the same network as a Sonos. I laughed myself silly when I heard that.

Its hardware. I sent mine in, they verified a faulty logic board, and they sent me a new laptop. Everything has been working more-or-less fine since.

Remember this... if its freezing for everyone, its likely software. If its freezing/panicing for a few, its likely hardware.

I wish people would read this entire thread... its clear that its hardware.

Bad Magic != the GPU issues discussed in this thread.

Powerplay failed to resume/initialize is the hardware problem and will not be fixed by software. If you got those, expect those panics to return. Other GPU style panics, YMMV for whether its software or not.

I wouldn't make a blanket statement telling people there is a fix for this without explaining the actual panic. That gives a false hope. The Powerplay failed to resume/initialize was confirmed by Apple as a hardware problem and will require a recent logic board manufactured March or later.

It’s hardware. Been through this with them. Had the executive team tell me and it’s been stated numerous times in this thread.

You need to send it in. You need a new logic board.

if it’s software, we all have the problem. If it’s hardware, only some of us. You are in the some of us category. My new replacement from Apple does not have this problem.

Umm... but I’m not wrong. :-). Read the thread :-)

Look at it this way. Why does my machine work but yours does not? If it’s software, shouldn't mine panic too? Why do a majority of the MBPs work fine, but only some don’t? That’s strongly evident of hardware or something in common between those few.

I have been through this. Philux has been through this to an extreme. It was claimed by Apple it is hardware... at the executive level.

if you have the panic, you will see. It’s hardware and you will get it replaced. If you don’t, your panics get worse. It gets to the point where only booting in safe mode gets you in.

im not here to argue with you or fight about it. I came here to share the experience and help others because many are waiting and hoping for a magic software fix.

Hey... if Apple can offer a software fix that somehow fixes these minority of MBPs, great. But I have a feeling you may panic your way to your warranty running out by waiting and then you will pay for that logic board.

Good luck!

I have read the 24 Pages and I disagree with your conclusion.. so far.. CPU/GPU panics is not always related to only hardware. Thise can be caused by problems in the Kernel. I had both Bad Magic AND CPU/GPU Panic. On a fresh new 10.15.4 with no ekstra software installed. 13 crashes in 24 hours.

After reset NVRAM and SMC, reload OS, and disable Power Nap (and the day after enabling Power Nap again), I have been running straight for 9 days without one single crash, on 10.15.4. All my software has been installed, and the MacBook has been transported and sent to sleep 100 times. No problems.

it was shipped from china 2. April 2020.

My MacBook Pro 16" has the same problem.

Abnormal shutdown after sleep, error reports:

"Panic(cpu 4 caller 0xffffff7f910d997b): 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 15:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.

"

pmset -g log > ~/data/temp/pmset_log_20200509_2

2020-05-04 09:51:55 +0800 ShutdownCause SMC shutdown cause: -20:

2020-05-04 09:51:55 +0800 HibernateStats hibmode=0 standbydelaylow=0 standbydelayhigh=0 0

Sleep/Wakes since boot:0 Dark Wake Count in this sleep cycle:2

2020-05-04 09:51:55 +0800 Sleep Entering Sleep state due to '': Using AC (Charge:0%)

2020-05-04 09:51:55 +0800 Failure Failure during wake: PEG0() : Some drivers failed to handle setPowerState

Sleep/Wakes since boot:0 Dark Wake Count in this sleep cycle:2

log show --predicate 'eventMessage contains "Previous shutdown cause"' --last 24h

Filtering the log data using "composedMessage CONTAINS "Previous shutdown cause""

Skipping info and debug messages, pass --info and/or --debug to include.

2020-05-10 18:13:12.592035+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20

2020-05-10 18:42:47.462838+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20

2020-05-10 20:56:34.822806+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5

2020-05-10 22:49:56.754095+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 7

2020-05-11 07:06:21.070393+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20

2020-05-11 07:54:21.367612+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20

2020-05-11 08:14:24.568634+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20

2020-05-11 09:31:11.427823+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5

2020-05-11 10:11:46.969820+0800 0xc9       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20

Control Center panic log shows:

{"caused_by":"macos","macos_version":"Mac OS X 10.15.4 ","os_version":"Bridge OS 4.4 (17P4281)","macos_system_state":"running","incident_id":"563E3A24-6F70-4DBA-885B-298E49F6CCE3","timestamp":"2020-05-11 00:14:15.00 +0000","bug_type":"210"}

....

...

"build" : "Bridge OS 4.4 (17P4281)",

"crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001",

"date" : "2020-05-11 00:14:14.97 +0000",

"incident" : "563E3A24-6F70-4DBA-885B-298E49F6CCE3",

"kernel" : "Darwin Kernel Version 19.4.0: Mon Mar 2 20:38:56 PST 2020; root:xnu-6153.101.6~2\/RELEASE_ARM64_T8010",

"macOSOtherString" : "\n** In Memory Panic Stackshot Succeeded ** Bytes Traced 362096 **\n",

"macOSPanicFlags" : "0x4",

"macOSPanicString" : "panic(cpu 6 caller 0xffffff7f8eb0a97b): 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 15:0 power-retry 0:0 connect-change 0 : PowerPlay Failed Resume.\n\n\nBacktrace (CPU 6), Frame : Return Address\n0xffffff81fbe03700 :

======

I have tried:

1) reinstall MacOS, 10.15.4. (not swap ssd, I think swap SSD is only left thing to try :-( )

2) disable Power Nap

3) Never use Chrome

3) Disable Graphic Switching

4) pmset -g standby 0

5) disconnect all USD/TB devices

6) reset SMC and NVRAM/PRAM

7) login with a new user

What's I found is that the problem doesn't occur in Safe mode. It only occurred in normal login mode. So I guess there may be some driver issue. I checked the install.log in /var/log directory, iBridge version updated automatically before manually update to MACOS 10.15.4 and before Mac runs into this problem. So I highly double it is caused by Apple software bugs.

I think I found the culprit for my random freezing. I used to experience random freezing at least once a day, even when im not doing anything. System is idle. In all of that instances, Viber is open and seems the first one to freeze.

Ever since uninstalled Viber, my machine has been super stable for 2 weeks now. No random freeze anymore.

Im not sure why this has fixed my issue, but this just goes to show that, at least for me, this is not hardware issue.

Just stumbled upon this thread while trying to diagnose issues with my own 16" MBP. 2.6/I7 machine with 32GB of Ram. Purchased in November, arrived in December, but my corporate IT was not ready to support Catalina so it sat from January until May waiting and waiting -- but finally they were ready to support Catalina so we got it all set-up and I started using it at home over the past 2 weeks. Hallelujah, I have missed you Mac! But this morning I got a screen freeze, fans to 100%, and on reboot after login, black screen fans to 100% reboot. I was eventually able to boot into safe mode and have seen both PowerPlay issues in my logs. I called Apple and they're sending me a package to send this back for the logic board replacement. Meanwhile, after letting the machine sit for a few hours, it actually booted without issues. I assume I should just follow-through and send it for repair once the box arrives and that just because it is working now is no indication that it will continue to do so...