MacBook Pro 16 2019 10.15.4 Kernel Panic / Reboot When Plugged In -- Help!

I got a new one today, very strange. I was using the laptop plugged in to my dock, also had the lid open. I wanted to undock so I ejected all of my external drives, closed the lid and unplugged the TB3 cable. I took the laptop right up stairs, just a few mins later and opened the lid to continue and it was just black screening me, however the keyboard backlight was on and the TouchBar was also on. I let it sit for a minute to see if the screen was going to come back on, and nothing. It eventually just shut down, so I pressed the power button to try and get it turned back on. After a few attempts it decided to boot back up, and then I got the error below. This is on 10.15.5 with second patch.

LOL I have already updated to the 10.15.5 supplemental update (Jun 1, 2020) and still am experiencing this. The supplemental update was for a kernel security vulnerability but the crashes discussed on this thread aren't happening due to the kernel privilege exploit. (I assume you have already read the supplemental update release note.. https://support.apple.com/en-us/HT211215)

@10_Gauge is one of the lucky ones ..

I used my 13" i5/8gb/256gb today for 2 location photoshoots, came back home Airdropped the 2 Capture one Session folders to this 16in i9/64gb/1TB/8gb5500M, left the computer for about 30 minutes and came back ... When i opened the first session The 1tab Youtube music that was playing started twitching, squeeking, everything froze and music just kept skipping, till the fans when full speed for 1 sec and macbook turned off . This is the error .

This computer is unreliable if you are working next to clients . It will embarasse you at least 1x a day .

Meanwhile senior costumer support Anna didnt accept my 14day return thinking i was the issue .

Might put an ad up and sell it for 3500 after paying 4300 for it.

back in 2018 i had a 2017 i7 16gb 15in macbook was so solid quit, ran low temperature with multiple apps open + 4k screen. This one goes up to 75c just for plugging my 4k monitor. Apple needs to admit they shouldnt have put i9s on these machines.

[Edited by Moderator]

Hey there! Sorry for the troubles! I’d say for this issue, this would be the best article to follow:

https://support.apple.com/en-us/HT200553

This can be caused by a number of things, I’d say if none of the steps fixed it, to contact Apple Support. If this is caused by something new they don’t know about, I’m sure they’d be interested, as nothing reported/nothing fixed. But in my experience, it’s either due to an external device plugged in, or some third party app extension or plugin installed that is conflicting with the operating system or some other program or process.

Especially if this happened after an update that’s probably the case, so updating all third party apps is also best to do if possible. Or uninstalling for testing purposes. Hope that helps.

Hey again, I read the thread, just giving some general advice. Some of which was to contact Apple to investigate, obviously the steps you’ve taken unfortunately haven’t worked, so I’d say that’s a good step to take. They work hard at making their products best they can, complaining won’t fix anything, but working with them may help not only you, but maybe even others. (Although I know not everyone has the time to do so). Just saying, maybe they have more resources than what you can find on google, or, like you said, just wait until it works itself out. Computers cost a lot nowadays, so I get it and hope it works out. If the hardware is ruled out, (Which of course might not be the case), I’d probably take a look at the firmware.....maybe this article can help:

Revive or restore Mac OS Firmware:

https://support.apple.com/guide/apple-configurator-2/revive-or-restore-mac-firmware-apdebea5be51/mac

Considering the situation and isolation done, I’d say restoring the firmware may be a valid step, Hope it works out!

Relevant article:

About the T2 Chip:

https://support.apple.com/en-us/HT208862

Same here:

• No peripherals connected ever
• 1st kernel panic was the day after updating from 10.15.3 to 10.15.4
• Supplemental update did not fix the kernel panic.
• Wen't back to Disable Power Nap workaround and at least that is still working for me.

I had same problem before and after the supplementary update 10.15.4.

Supplemental update did not fix the kernel panic.

Disabling power nap doesn't work for me.

I have a MacBook Pro (16-inch, 2019)

• Monitor Dell U2719DX
• Magic mouse 2
• Magic keyboard

I have a MacBook Pro (16-inch, 2019)

• Monitor Dell U2719DX
• Magic mouse 2
• Magic keyboard

Status here

My GPU Panic sleep problem is still solved. I have since installed my video-rendering tools, my developer tools, all my other stuff.

My energy saving stuff is back to normal.

Having it gooing to sleep on power, on batteries

Running 10.15.4

Solution for me was

My brand new macbook pro 16 (Shipped 2. april 2020) also restarted (crashed) over nigth - actually it crashed (Kernel Panic GPU) everytime it went to sleep mode. I had nothing installed except default OSX with updates.

Solution details

1. Reset: Pram & NVRAM (still crashed)
2. Reset: SMC (still crashed)
3. Internet Recovery Command+Option+R (when booting) (Crashed under installation, but continued afterwards)
4. Disabled "Prevent computer from sleeping automatically when the display is off." & "PowerNap.." in Energy Saver settings (Problems disappeared)
5. Two days later I enabled "Prevent computer from sleeping...." and "Powernap..." again (Still no problems)

I don't know if step 1-3 is necessary, but I think so.

So a macbook pro 16 that I almost returned, is now working perfectly - and I'm very happy:-)

Have you tried alle 4 steps? I worked for me an others. The internet recovery does not delete your own files.

At least try step 4.

Solution for me was

My brand new macbook pro 16 (Shipped 2. april 2020) also restarted (crashed) over nigth - actually it crashed (Kernel Panic GPU) everytime it went to sleep mode. I had nothing installed except default OSX with updates.

Solution details

1. Reset: Pram & NVRAM (still crashed)
2. Reset: SMC (still crashed)
3. Internet Recovery Command+Option+R (when booting) (Crashed under installation, but continued afterwards)
4. Disabled "Prevent computer from sleeping automatically when the display is off." & "PowerNap.." in Energy Saver settings (Problems disappeared)
5. Two days later I enabled "Prevent computer from sleeping...." and "Powernap..." again (Still no problems)

I personally don't think it is a hardware issue. Please refer to the steps I have listed in my former posts. Since then I have no problems anymore. Not even with the power nap option enabled.

The steps are:

• Reset System Management Controllers (SMC) according to the instructions given by Apple
• Additionally I reset the NVRAM or PRAM according to Apple's instructions
• Additionally I turned off power nap in the energy control.
• After a few days without problems I turned on the power nap option again

Since several days now I did not experience any issues.

Good luck!

Hey guys,

just wanted to let you know:

I have talked to Apple Support (above 1st level) about another issue and took the chance to ask about the kernel panics. They are aware of the issue and the engineers have tagged it as actively being investigated / fixed soon.

There are 4 'official' workarounds that are suggested in their documentation about the issue - many already being discussed here in the thread:

1. Disable "Prevent computer from sleeping automatically when the display is off"
2. Disable Power Nap
3. Unplug power cord before you send the computer to sleep (that includes closing the lid)
4. Shut Down before closing the lid

Just for the many people writing that they are worried. It is being addressed and everyone expects it to be solved in 10.15.5.

After all these issues I had with macbook pro 16, I today sold mine and bought new Dell XPS 17. Apple aint premium anymore in my opinion.

• Regular crashes
• Matlab and many software I use were not refined for mac os
• Multiple system crashes and failures when undocking from thunderbolt 3
• etc etc...

Paid premium for the device which "just works" but got completely opposite. Missed my desktop setup (which I sold to buy this crap).

1. described in detail every step I took (reset PRAM, SMC, wiped drive twice and reinstalled OS, disk diagnostics, hardware diagnostics)
2. had a log of every kernel panic my machine had since March (at least 1 per day)
3. refused to ship it off for severals reasons (I am a developer and can't be without the machine, didn't want to have my machine be the experimental machine for the Apple engineers to tear apart and try to uncover the issue.)
4. shared the amount of $$$ I've spent with Apple over the years (multiple iPads, watches, iPhones, laptops, etc.)
5. insisted that the problems were caused by 10.15.4 and insisted that my machine wasn't a "one-off" because of threads like this one (and the Mr. McIntosh thread)
6. promised to send a very detailed email to Tim Cook. I've successfully emailed CEOs in the past - not for trivial issues - only for issues that I repeatedly tried to have corrected by the service teams.
7. I wasn't rude or angry - just insistent that Apple should take accountability for putting the wrong type of gas in my car causing the engine to fail. My MBP was sweet until 10.15.4 - everything was a mess after 10.15.4.

can you tell me something about my report? I will try clean system tonight. Anyway with my backup every morning problem occurs. Disable power nap works. Then I tried to work with Parallels (still version 14 maybe that’s problem) settings and yesterday I turned back on power nap and at the morning it was fine. I can still return my mbp (till Friday) that’s why I ask. I don’t know what to do. If it is soft I can live with it