Macbook pro 16 2019 freezes randomly and restarts

So after 15 days of use on the macbook pro 16 base model, I've had random shutdowns, sleep wake freezes, display glitches with old tv-style bad signal on some portion of the screen, fan surges, and constant shutdown-restart cycles preventing logging in.

Today I talked to apple support, resintalled macos, wiped the ssd then did a fresh install of catalina. And now the laptop doesn't load completely, reaches about 70% on boot, fan surge for 1 second and the shutdown-restart cycle loops again. Only way to get in macos is through safe boot which is unusable due to unbelievable choppiness and lag.

Very disappointed and having my trust in apple shattered. I requested a replacement and I'm sure as **** asking for a refund if I get a single issue with the replacement. Which will also mean returning to windows... After almost a decade of apple.

> Today I talked to apple support, resintalled macos, wiped the ssd then did a fresh install of catalina. And now the laptop doesn't load completely, reaches about 70% on boot, fan surge for 1 second and the shutdown-restart cycle loops again. Only way to get in macos is through safe boot which is unusable due to unbelievable choppiness and lag.

This is exactly what was happening to mine.

Oh wow. I'm having second thoughts about having requested a replacement over a refund now. Did you get a different device?

I'll update here when I get the new one. I'm now browsing windows laptops in Anticipation of the worst.

I shipped the laptop this morning and I will be receiving a full refund. I ended up ordering a MacBook Air 2020 instead. But now, I am realizing the kernel panics and other issues arose after updating what is an otherwise wonderful laptop to Catalina 10.15.4.

After wiping the SSD and doing a fresh install of 10.15.4 yesterday, my Mac would switch on and off constantly without ever reaching the log in screen. Before wiping the device, I could type in my password but the laptop's fan would surge and the device would end up shutting down. Accessing macOS could only be done through safe boot which also made the device unusable.

The issues (kernel panic; glitchy section of the display on boot; section above the Touch Bar hot to the touch) started and got worse after the update.

My conclusion is that the software has effectively destroyed the hardware, the same thing will happen to my air when I get it...

OK. So I received my 16 Mac Pro 3 days ago, 4 crashes right away. That was one of the most disappointing moments I had recently ... then I did a bit of research and tried everything possible. Now I believe it's software prob. Here's what I did.

1. Changed from Chrome to Safari.

2. Disabled Power Nap.

3. Disabled Graphic Switching.

4. Disabled the Turbo Boost. Enable it while I really need it for heavy task.

It never crashed again! So definitely try these before you seriously consider returning it. God bless your apple.

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.

Hi interesting, i have the power on 70% fan surge issue, i have decided not to re-install the OS it was totally fine before 10.15.4

usually on its 3 attempt it will log in fine.

I am also on beta 10.15.5 beta 4 and have the same issues.

Just to add to everyone else's input, I have two 16" MBPs and I am having the same issues as described here on both of them. One was purchased on the first day the 16" was available. The second was purchased a couple of weeks ago (manufactured on April 27, 2020). So the new LB hasn't made a difference for me.

I set up my second 16" yesterday and installed all of my software for work (MS Office, Teams, OneNote, Chrome, Skype). When I woke up my new MBP this morning it was at the login screen because it crashed overnight.

So both of my 16" MBPs have the same issues described here. The first one was purchased on the very first day the 16" MBP was available. The second one was manufactured on April 27, 2020. So at least for me, having a newer LB did not make a difference.

I have a case number for my first laptop. I've done all of the usual steps (reset SMC, reset PRAM, re-installed macOS) so the product specialist wants me to wipe the SSD at this point and reinstall everything. I will open a new case number for the second 16". But now I need to figure out whether to return the new 16" and maybe get a 13", but I really wanted the power for photo and video applications.

It's definitely disappointing that both machines have the issue and clearly it's not random. I hope they can figure out what the heck is happening here.

Also both of my laptops tend to get really hot. I'm on 10.15.4.

I have a case open with Apple, as well, for the "PowerPlay Failed Resume" panic.

I spoke with a Senior Advisor, as well as a product specialist, and they both said that the issue is software related and they're shooting to get the fix released in the next patch update.

When I mentioned random, I meant it is happening consistently, to many machines, but not dependent on one or a few of the same programs/activities/peripherals or not etc. It happens randomly. Random=occurring without definite aim, reason, or pattern!

Apple wouldn't replace my 16" MBP as they said a software update will solve the issue (fans spinning up then crashing, GPU Panic). I'm not totally convinced as this only seems to be impacting 16" MBP, if it was a software issue then why wouldn't it be impacting other machines?

Apparently the latest beta doesn't fix it either and to be honest I'm not very happy spending £2.5K on a machine and having to wait for Apple to release a so called fix. I spoke to them a couple of weeks ago and still no sign of this being rectified.

Exactly the same issues here it only started since 10.15.4 , 10.15.3 was fine I am on the latest beta and it’s still the same it reboots several times on power up , with the fan issue, it eventually gets to the login screen :( . They need to fix ASAP

Interestingly, even though I have graphic switching off, power nap off etc, when I put the lid down the machine goes to sleep as expected. In the morning I open the lid and wait for the fans and reboot (every time). What I didn't realise until the other day, and bearing in mind I have been putting the machine to sleep for weeks before I goto bed, is that the system will constantly keep crashing and rebooting whilst the lid is closed. I only found this out because my wife told me that my machine was making some funny sounds! So goodness know how many times it crashes and reboots whilst I've been in the land of nod!

Same with me. I started crashing when it went to sleep mode but suddenly it started crashing every 5 minutes. So I took it back to the store and they replaced with another one. So far, so good (after 3 hours of use). LOL. I'll purchase Apple Care for sure.

I followed what laurencebear suggested above and it worked for 3 days:

1. Changed from Chrome to Safari.

2. Disabled Power Nap.

3. Disabled Graphic Switching.

4. Disabled the Turbo Boost. Enable it while I really need it for heavy task.

I thought this worked since I went three days with no issues. Last night while sleeping it crashed with the same error log as previous crashes. :(

I'm going to call Apple later today. I have 2 MBP 16s and they both have this annoying issue. One was purchased the day they became available and the other was purchased a couple of weeks ago. So the second one would have any updated LB if they really did update it.