MacBook Pro 16" Kernal Panic During Restart when Plugged into Dual Monitors

The engineers who talk directly to customers do not get told the exact issue, and because Apple is so secretive, they have no way of discovering the exact issue.

If they say it is Hardware, then send them your Mac and have them fix it, guaranteed.

It is absolutely beyond me why you haven't been expelled from this forum already.

The sheer amount of ignorance and complete lack of knowledge is simply unbelievable.

There is absolutely no evidence supporting your "Problem with graphics chip" theory. This is pure uneducated speculation.

You spread these theories while completely ignoring the technical facts (such as the problem neither appearing in bootcamp or w/o any monitors in MacOS) as well as user reports clearly stating that the problem persists after a motherboard replacement.

BTW, the so called engineers are not development engineers. They are specially trained support people who have as little of a clue as our dear Grant.

NNEU wrote:

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It is absolutely beyond me why you haven't been expelled from this forum already.

Because other Users have awarded me in excess of 89,100 points for responses they deemed at least "helpful". I have achieved level 10, the highest level of helpfulness for senior technical contributors on these forums..

If you do not find my advice helpful, I suggest you ignore it. If you like, I will personally refund the full amount you paid for that advice.

Thanks. I sent my computer in and have been told that a part had to be ordered for replacement, but no other details. I've hooked up an older laptop to one 1 LG monitor and it has been working without any issue, so waiting to get the newer machine back to see if said repair actually works or not.

I recently upgraded to a 2019 16" with the same specs as yours except with 32GB RAM & 2TB HD and was also was experiencing kernel panics and restarts. It would always occur some time after putting the laptop to sleep while still connected to two external displays. This happened a few times, but then I did a random experiment and put the computer to sleep and then closed the laptop lid. For some strange reason, doing that has now eliminated all kernel panics and random restarts after putting to sleep while connected to external displays. Figured this may be helpful for some.

Might be worth doing an SMC reset and OS reload from the Internet. It took about an hour and, I can't promise that it will totally resolve it, but in my case, I went from a restart every hour or two after installing the 10.15.4 supplemental release to no restarts for the past few days. I have been doing this after each OS update and, while it didn't always eliminate the problem, it reduced the frequency on some releases, including this one.

Before I do all of that I've started with switching off the power-nap, will see if jus that solves is as indicated in some other threads I've visited.

Pretty poor of Apple to have this bug on their flagship MacBook...

Performed all of the above and still the same kernel panic issues. Now Apple has my computer in for repairs, it is going on 2 weeks now on hold at Apple for an ordered part that has not arrived, apparently the error messages reflect a bad logic board that needs replacing. Very frustrating.

AGREE. I sent my laptop in for repair on April 2 and received back 10 days later on April 21 with a note stating that the logic board and Touch ID boards being replaced, as well as clean OS install.

Connected to monitors, laptop put to sleep overnight...another kernel panic this am, same error messages as before.

VERY FRUSTRATING. Apple needs to escalate and resolve this issue now.

I'm a bit confused as to why you're posting this? Why not just contact Apple again and tell them your issue was no resolved? No one here is an Apple technician and only Apple can help you at this point. Have you considered requesting a replacement?

Trying to contact them; have requested a replacement and Apple stating that is not an option.

All information being posted to try to help understand what the problem is and being experienced by others as well, and following up with described problem that a logic board replacement did not solve the issue.

That's really odd. Not sure what Powernap is doing that requires disabling it to avoid KP's. I have PowerNap enabled on my 16" MBP and I've never experienced a KP. I've had it since late January. In fact it's been perfect all the way around.

I think the issues are occurring when connected to external monitors I suspect, in particular the Apple-endorsed LG 5K monitors, though it happens if connected to two Dell UHD monitors as well. Happens when manually placing the computer to sleep, or if the computer goes to sleep on its own. Using LG thunderbolt usb-c cables supplied with monitor directly, or in the case with Dell, one with an HDMI cable connected to the Apple adaptor. Have tried Apple thunderbolt cables direct to monitor and computer for LG as well.

Very frustrating. This issue has been going on for some time and not getting resolved.

"Very frustrating. This issue has been going on for some time and not getting resolved."

Perhaps because it's not affecting as many people as you may think. Case in point, I've never experienced a kernel panic and I'm a power user editing Final Cut Pro X and Logic Pro X projects weekly. It may be just a bad run of shipped computers. That does happen at times, but forums should never be used as law that something is widespread and not getting resolved simply because it's amongst forum members that are experiencing issues.

Yes, but if it were a bad run of shipped computers, and I sent my computer in to Apple and had the logic board replaced, as well as the Touch ID board, then the problem should be fixed. But the kernel panics continue after having these components replaced.

It appears to be the same kernel panic issues others in the forum are experiencing under the conditions described. The issue described for this situation has been going on for some time now without resolution in this case, and others as described, no one has suggested the forum be used as law or stated it is a widespread event that I'm aware of.