kernel panic on MBP 16

Thom, I have EXACT this issue. Only KPs when my 27inch AOC monitor is connected and in sleep mode, also got worse with 10.15.5. Vans are going 100% for just about a sec. before the KP.

I didn’t experience the issue in safe mode. Have you tried this?

I can be pretty certain it wasn't something I added - that was Apple's suggestion as well - the problem has persisted consistently despite a completely fresh wipe and install.

Having done all the resets and reinstalls, as well as seeing the direct effects of each subsequent update, as well as the fact that it's happening to multiple users - I think we can safely say this is a bug/series of bugs.

All we can do now is keep reporting the problem and hope that Apple gets around to issuing a fix sooner rather than later.

I had same kernel paniccissues and turned off powernap as an interim solution.

It was a SW Update a few weeks ago which resolved the issue. I turned powernap on again and had no issue since then.

The other real big issue with the fan noise remains.

Just disable Power Nap and restart. Let Power Nap ticked off. Seems the best working solution for now.

I've read that disabling power nap should fix the issue.

I just got a response from my apple support ticket: We know about this problem with MBP 16" and you should wait for the next Catalina update in order to check if the KP problems stopped.

I can confirm that my issue was fixed with 10.15.6

Hi. Thought I'd share here too, hoping Apple will take notice! I've been experiencing the kernal panic from sleep issue from 10.15.4 onward on my 16" MBP bought in February. Was onto apple support with no solution found (tried all the resets, clean reinstallations, eliminating external monitors, 3rd party software etc).

Then found the disable powernap "solution" with 10.15.4, which worked just fine.

Made the mistake of upgrading to 10.15.5 and the problem got worse, kp'ing from sleep every single time.

Today I installed the supplementary update (I keep hoping they'll solve the issue) and now it sleeps and wakes fine, so long as it isn't plugged into my external monitor (Dell U2715H). When plugged into the monitor it KPs during sleep every time, though the time it takes to KP varies (I hear it whoosh).

Have tried resetting the SMC again, switching off various power save options, none making any difference right now. I guess it's just a case of waiting for more updates to solve this.

AgentCircus wrote:

...

If safe mode really solved the issue, at least there’s hope that it’s definitely a software issue.

...

Restarting in Safe Mode is an experiment. In general, "works in Safe Mode, not in regular mode" indicates "it's something YOU added".

This is because safe mode does not load any third-party extensions, and only minimal Apple extensions (does not load graphics acceleration). Screen updates will be wonky and slow, but ultimately correct. No one is expected to run in Safe Mode on a daily basis. Safe mode exists for diagnosing problems.

Same for me with MacBook Pro 16, i7 CPU and Radeon Pro 5300M

Wake up from sleep is ending in black display, not responding system, crash or sometimes it works. I‘m sending at least once a day a crash report to Apple.

Chatting today with Apple support, they suggested to create a test account and watch wake up behavior.

Not sure where this is going to end, but will give it a try.

Hi folks,

I've been getting the same unexpected restarts too. The problem report notes a kernel panic but each time seems to be slightly different.

I've noticed that it tends to happen when I use whatsapp web.

I've had my MBP 16 inch since Dec 2019 and up until 2 weeks ago, I haven't had a problem however I only recently started using whatsapp on my Mac.

I stopped using whatsapp web in chrome/any browser and downloaded the app instead. I thought it was fixed until it did another restart yesterday. I'm wondering if this is at least one of the causes? I've uninstalled it so will see if it continues this week.

Phoned Apple support today and they also ran me through this article https://support.apple.com/en-gb/HT200553 .

I just find it odd how it was fine for a solid 4 months then only in the last 2 weeks started the restart unexpectedly.

I haven't reinstalled OS yet - that's the next step! ✌️😊

I've now unchecked 'enable power nap' on both battery and power adapter so will see if it continues!

Are you putting your macbook to sleep by closing the lid or by manually clicking 'sleep' on the Apple icon top-left and then closing your screen when display/keys go dark?

Thanks!

Hi Folks, I am very much in the same boat. After two rounds of shipping my 2019 16” MBP off to Apple for warranty repair, including a new logic board also, it is still freeze, shutdown, restart. Many time in a day. I did a clean install of 10.15.4 and also updated to the latest supplemental version, no change. Today, I found this thread...look at the post by Mountn41man, as I think he has this problem resolved:

https://discussions.apple.com/thread/250905859?answerId=252460159022

Apple needs to own up to this, as hundreds of us are experiencing the same issue. It is the hardware and we are wasting time and energy waiting for the savior update to arrive.

Then take advantage of your 14-day free return period and return it.