Macbook pro 16 2019 freezes randomly and restarts

Same issue with this error report

panic(cpu 0 caller 0xfffffff01abb77b4): macOS watchdog detected

Debugger message: panic

Memory ID: 0x6

OS version: 17P4281

macOS version: 19E287

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

Kernel UUID: 3695E9D9-323E-350E-9A6E-65819BE397D7

iBoot version: iBoot-5540.105.2

secure boot?: YES

x86 EFI Boot State: 0x16

x86 System State: 0x0

x86 Power State: 0x0

x86 Shutdown Cause: 0x5

x86 Previous Power Transitions: 0x405060400

PCIeUp link state: 0x89271614

Paniclog version: 13

Kernel slide: 0x0000000012b80000

Kernel text base: 0xfffffff019b84000

mach_absolute_time: 0xa798f2cb4

Epoch Time: sec usec

Boot : 0x5e90f376 0x0008eaef

Sleep : 0x5e91047f 0x00020583

Wake : 0x5e91bbd1 0x0001cf06

Calendar: 0x5e91be61 0x00039412

Panicked task 0xffffffe000803c00: 3038 pages, 220 threads: pid 0: kernel_task

Panicked thread: 0xffffffe000b35520, backtrace: 0xffffffe01132b4b0, tid: 363

lr: 0xfffffff01a448764 fp: 0xffffffe01132b4f0

lr: 0xfffffff01a4485c0 fp: 0xffffffe01132b560

lr: 0xfffffff01a562e7c fp: 0xffffffe01132b610

lr: 0xfffffff01aa1162c fp: 0xffffffe01132b620

lr: 0xfffffff01a447f28 fp: 0xffffffe01132b990

lr: 0xfffffff01a448280 fp: 0xffffffe01132b9e0

lr: 0xfffffff01b27e934 fp: 0xffffffe01132ba00

lr: 0xfffffff01abb77b4 fp: 0xffffffe01132ba30

lr: 0xfffffff01aba8be4 fp: 0xffffffe01132baa0

lr: 0xfffffff01abaab0c fp: 0xffffffe01132bb50

lr: 0xfffffff01aba831c fp: 0xffffffe01132bbe0

lr: 0xfffffff01ab6f780 fp: 0xffffffe01132bc10

lr: 0xfffffff01a97eabc fp: 0xffffffe01132bc50

lr: 0xfffffff01a97e340 fp: 0xffffffe01132bc90

lr: 0xfffffff01aa1c514 fp: 0x0000000000000000

So I got my proper replacement (not a repair this time) about 2 weeks ago now. I didn't want to say much just in case this one still freezes & restarts. Everything that was freezing the previous ones isn't freezing this one, I have been using it heavily. Not even any bad magic crashes (or whatever crash log replaced that in 10.15.4).

The macbook arrived with 10.15.3 pre-installed, 10.15.4 was released while it was shipping over to me. The build date is March 2020.

With 10.15.3 pre-installed, it froze and restarted with no 3rd party software. Did initial setup, logged in and it froze while downloading files. I then saw 10.15.4 had been released and updated through system prefences, over the top of 10.15.3. It froze and restarted in sleep, right after system update, nothing installed.

I thought stuff it, I'll try a clean install, nothing was on there anyway. After the clean install it hasn't frozen for 2 weeks, with about 200 apps installed for work and doing a lot of heavy tasks on it. Peripherals plugged in, external monitors. No crash, all good.

For the clean install (and I think this is important), I used Internet Recovery (hold command + R on boot). Before that though, I reset the NVRAM & SMC, then once those were done I entered Internet Recovery. In Internet Recovery, before installing 10.15.4 I went in to Disk Utility and deleted both APFS containers (right click on drive and choose to delete each container) for the main internal drive, then erased the disk after deleting containers. Apple support never tell you to erase the APFS containers. The T2 encrypts the APFS containers and I think this is where the issue stems from. After deleting the containers & erasing, I installed 10.15.4. Since doing that, the macbook hasn't crashed once, no issues whatsoever for a solid 2 weeks with a lot of use every day. I didn't restore any backups whatsoever, I spent a few days downloading apps fresh from the web & copied data in user folders manually over from backup drive.

Who actually knows if it's fixed since apple won't admit a thing in regards to this situation, not even make note of it in update changelogs. Take this advice with a grain of salt, don't hold me responsible for erasing your system and the problem is still there...this is just my experience.

Either way this is what I expected "off the shelf" and I've lost a lot of time and even some clients to this situation. 5 months and I finally seem to have a mbp 2019 16" that works. 10.15.1 -> 10.15.3 appear to be dudds with this machine but 10.15.4 is working for me, after a totally clean install.

I hope this helps, I was going to wait a month before reporting but it pains me to see so many still affected by this. Unsure why it doesn't pain apple engineers the same way. My original mbp 2019 16" and logicboard replacements had November 2019 build dates, this latest one is a March 2020 build date, so this might not work on 'older' builds.

@philux, good to hear you finally may have a good one. My experience is the same as yours. It's clear to me that there is an anomaly in many of these 16" MBPs. I finally have one that is stable and mostly doesn't crash. Mine is a March 2020 as well.

This is an underscore to others that they need to get theirs replaced and hoping for a software fix is just wasting time.

Yep my previous ones would freeze/restart with gpu switch or during sleep, sometimes a bad magic crash with things plugged in. No matter what I did to those (NVRAM/SMC reset, full erase) they always suffered the issue.

I think it was a combination of bad hardware and Catalina bugs.

The latest one I got seems to have suffered from Catalina bugs with its preinstalled 10.15.3 which carried over when updating to 10.15.4 over the top of 10.15.3, but a clean install of 10.15.4 has fixed it for now. I've even applied the supplemental update and it's still good, although I'd have to note the supplemental update messed up a lot of my settings including device name & launchpad sorting.

Basically this entire situation is from inconsitency, which is a pretty bad thing to have on a computer in the first place. They need to be consistent!

Идентичная проблема. Зависает после сна и перезагружается, может зависнуть во время работы, после перезагрузки, не всегда, включается. После перезагрузки сыпятся ошибки - kernel Panic / gpu Panic,  ноут :

MacBook Pro (16-inch, 2019),2,3 GHz 8‑ядерный процессор Intel Core i9,16 ГБ 2667 MHz DDR4,AMD Radeon Pro 5500M 4 ГБ

Intel UHD Graphics 630 1536 МБ. Сдаю в авторизованный сервис, ход истории отпишу. Всем здоровья !

Since the 10.15.4 supplemental release, my $3200 16" MBP is now crashing with a kernel panic every 2 hours. I could make it for a couple of days prior to installing it so I suggest waiting for 10.15.5.

This is absolutely disruptive, infuriating and inexcusable.

If you got to 10.15.4 supplemental by updating over the top of previous macOS versions (like 10.15.1 -> 10.15.2 -> 10.15.3 -> 10.15.4) your install might be bugged. Try clean installing 10.15.4 so it isn't installed over the top of previous versions, as much of a pain that is.

Thanks for the suggestion but already done that. It crashed regularly with the update and it crashes regularly after the full install. I wish I'd kept my crappy 15" with the defective keyboard, at least I wasn't loosing work due to random panics.

Yep same for me, I bought it on initial release then all the replacements they gave me were from November 2019 until I hit my rocker and demanded one with a 2020 build date.

The 2019 build date machines suffered from two types of panic, waking from sleep (Catalina bug, affects other macs) and gpu switch (hardware bug, only affecting mbp 2019 16").

This latest 2020 build date machine only suffered a wake from sleep panic with its pre-installed 10.15.3 and me installing 10.15.4 over the top. When I clean installed 10.15.4 it hasn't had a kernel panic once. I've even left it powered on for 2 weeks straight now, shutting the lid at night and recharging as necessary just to make sure I can use it like every other mac I've owned.

I was about 16 weeks behind in my work because of all this but am now only 4 weeks behind since so many clients gave me the flick, they couldn't call me as I was on the phone to apple support most of the time (17 hours logged) trying to get a 2020 build date machine, which work fine without gpu panics as m0unt41nman pointed out. One of the jobs I took on then lost would have recovered the cost of this machine too. I have a fast self-built windows desktop but one of the main reasons I got this mbp 2019 16" was I broke my knee so couldn't sit at my desk properly, so what a joke that I then had to spend 8 hours driving my manual car to & from the repair centre when apple delivered the original one to my place (purchased through apple online).

Same problem here,

Mainly when using web browsing, it also happened while recording a video with PhotoBooth, do you guys believe it can be a problem linked to the Video Card?

It seems to happen when an extra graphics effort may be needed to me.

No

for me it has nothing to do with video. It is random. Sometimes I am working on a Word doc. Sometimes on Safari

sometimes on mail

totally random. Sometimes every 30 minutes, sometimes not for days.

Same on my 16", no rhyme or reason. No crashes for days then every hour for 5-6 hours. Web browsing, using calendar, zoom or even when not doing anything.

Yesterday, it crashed differently, screens went black but keyboard stayed lit. After about 60 sec, it just shut down, not the usual fan wind-up or clink sound, just dead. No panic message on restart, either, after a minute or two, the OS loaded.

The supplemental has made it less stable.

Just an update on my progress. My prior MacBook would unexpectedly freeze for 10 seconds, then the fans would go 100% for 5 seconds, and the machine would then power off or restart. I would check the logs after this issue and get a "bad magic" kernel panic. They sent me a brand new replacement. This issue seems to be resolved with a brand new replacement. This is a hardware issue (unless you're having panics due to the most recent version of Catalina). If you're having kernel panics, bad magic issues, or unexpected shut downs/reboots, then I'd recommend to get a replacement as soon as possible. This is the only way to resolve this issue.

I spent countless hours troubleshooting the issue with Apple and sending it out for repair twice. The first repair, they only reinstalled MacOS and updated my T2 firmware. This didn't resolve it. The second repair, they replaced my Touch ID Board and Logic Board. This also didn't resolve the issue. I then requested a new replacement (since I'm still within my warranty). They approved this and were able to send me this brand new replacement. This replacement does NOT have any issues and now the issue is resolved.

Please keep in mind that Apple (US) will only send a replacement after a certain number of repair attempts (usually 2-3 attempts), if you're past the 14-day return date. So please make sure to get started on the repair process and after the second/third repair, ask for a replacement. This is the only way to resolve the issue. It was the only way for me to resolve the unexpected shutdowns and reboots with "Bad Magic" kernel panics. I have read prior that this is the only way others have fully resolved this issue. I hope you all have the same success as me!

Yes, but my replacement also freezes randomly and restarts. Both were custom ordered in February (16-inch, 2019)

The replacement which arrived in March also does exactly the same thing. Waiting for APPLE to reopen so I can return it :(

Ridiculous for a laptop that cost over $4,000

I have the exact same issue with my 2019 16” MBP. I sent it off to Apple, they replaced the logic board and sent it back. Interestingly, when I sent it to them it was running 10.15.4, the latest update to the OS, but when they returned it to me from Apple, it was running 10.13 with no mention as to why. Then, two days later, the supplemental update (with no mention of correcting this issue so many of us are clearly having) to 10.15.4 was released. I updated, and that same day my MBP started freezing, crashing and rebooting over and over again. A clean install did not help. So, after this, and a lengthy wait for a troubleshooting call, it went back to Apple for a second round of repair. Two days later, they sent it back stating that they “could not reproduce the problem”. Again, it returned to me running 10.13 and no mention of why. After reading a post by a user who said try to prevent the hard disk from sleeping and do not allow the display to sleep, so far no crashes, but this is a ridiculous “solution”, if you can call it that. I doubt it will continue to work too. I am a professor at a major university desperately trying to teach online from home while all this has occurred. It has taken my stress and medically controlled blood pressure well beyond Already high pandemic associated levels.

Apple needs to extend our warranties on these machines for at least another full year. I do not trust it. $3000+ and this is what I get? More importantly, do something about it now!

Not cool, Apple. Do the right thing by your loyal customers (like me, a Mac user since 1985).