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

this doesn't work with my MacBook Pro 2014. I write this as I open the lid, send the error report after restart and first thing sign on here to see if anyone has a fix. Catalina is **** poor piece of software. It ought to be able to restore to older system without having to wipe drive - but that is the next thing to do, to get back to stable OS.

Wish I could run Windows on this laptop...so fed up.

I can confirm that I have the same issue. 16" MBP, 2.4GHz 8-Core i9, 64GB RAM. Started after upgrading to 10.15.4. Tried resetting the SMC which did not help. I tried to restore from Time Machine and that gave a few days without crashing, but then it started again today. VERY annoying. I have not had ViritualBox installed, so I am pretty sure that isn't the reason for my crashes.

I will try to turn off Power Nap.. If that fixes it I really hope they come with a more permanent fix soon. Power Nap was one feature I was happy to finally get when I upgraded to the 16" last year..

Been sending in the crash reports to Apple every time, now several times a day.

After disabling "power nap" I haven't had the issue. But I plan to keep a close eye on it.

I spoke with a senior Apple tech person yesterday and shared my crash logs. It seems that the issue (i.e., crash) doesn't occur when our systems go to sleep, but when they are woken up from sleep - an interesting distinction.

I am having the same issue: MacBook Pro 16" 32GB ram - kernel panics 2-3 times a day - started after upgrade to 10.15.4. Disabling all startup items didn't stop the problem. I booted in safe mode - no kernel panics while booted in safe mode - only tested this for 1 day. I just disabled the power nap and am crossing my fingers.

I've had exactly the same experience, close the lid and put on charge at night and when I open the machine up in the morning, the machine has rebooted with a panic in AppleIntelFramebuffer::setPowerState.

By unchecking "Enable Power Nap while plugged into the power adaptor" in System Preferences > Energy Saver > Power Adapter as suggested in this thread, I've had three trouble free mornings.

Thanks all and awaiting a fix from Apple.

Same here. ( 16"/i5/32/512) Had this reboot twice this week. In both cases it was left with lid closed. Plugged in.

Never had it before 10.15.4

Just disabled Power Nap and flipped Automatic Graphic Switching ( turned it off and back on )

Will post if I have any more reboots.

Apple, please fix! There is been at least seven new threads about this issue recently.

For me, disabling power nap fixed the issue completely (16"-MB Pro 2019), no more shutdowns since 5 days.

@Step89: Do you have that since the update? I suggest you to check for third party kernel extensions (in terminal: kextstat | grep -v com.apple). You could also try to unplug the power and all devices and check if the crash still occurs. Good luck!

@Timecop: yes I've only had the issue since the update. No 3rd party extensions and no devices plugged in. The crashes are becoming more frequent. I've reset PRAM and turned off the power nap setting as well.

I bought a brand-new MacBook Pro 16' three weeks ago and it crashes from the first day 5-10 times a day. I am so desperate. Even the latest update of MacOS provided today does not solve the problem. I cannot believe that Apple is pushing products like this to the market. I am simply not able to work with this product. Its the worst an most unstable system I have experienced ever.

By the way, I tried everything from a clean installation of macOS Catalina to all the kinds of reset mentioned before.

Apple help me or I will refund the product very soon and get myself a stable Windows 10 device.

I installed the supplementary release to 10.15.4 today. After that I had the laptop several hours in sleep mode with power nap enabled. No further kernel panics. It seems for me the problem is solved.

I have the exact same issue which is seriously killing my productivity and stressing me out since this device is pretty expensive and I was excited to use it.

MacBookPro16,1

8-Core Intel Core i9 2.4 GHz

32 GB

2 TB

Catalina 10.15.4 19E266

Will try the PowerNap hack but my hopes aren't high since it also crashes randomly while running (display on).

Disabling power nap doesn't work for me. Kernel panics started after 10.15.4 upgrade. Supplemental upgrade didn't help. I will try removing all peripherals. I think I had 1 day with no kernel panics provided nothing was plugged in. I'll see if that works - unacceptable though. Where is Apple with a fix? Ridiculous to pay this much for a 16" MBP with multiple kernel panics per day.

Same problem here, MBP 16 2019 10.15.4

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

macOSPanicString: panic(cpu 0 caller 0xffffff8009c91b2c): Sleep transition timed out after 180 seconds while notifying clients about upcoming system capability changes. Suspected bundle: com.apple.iokit.IOGraphicsFamily. Thread 0x74.

+ feedback report

+ crash report

Hope this problem will touch apple engineers.

I'm still on 10.15.4. Disabling "Power Nap" stop the daily crashes from going to sleep. But after a few days it happened again. This time a slightly different error message through: "panic(cpu 0 caller 0xffffff8007291b2c): Sleep transition timed out after 180 seconds while calling power state change callbacks. Suspected bundle: com.apple.iokit.IOGraphicsFamily. Thread 0xc2e8c."

I wish that Apple would fix this already.

I thought supplementary release 10.15.4 solved it for me. But the original problem is actually not solved.

I recently had my new MacBook Pro 16 2019 connected via a single USB-C cable to a CalDigit USB-C Pro Dock, using its power supply and an ethernet cable for network. No monitor connected though.

With this setup and the supplementary 10.15.4 release I didn't experience any kernel panic during sleep with power nap enabled .

However when I go back to the original setup, having only the original Apple power supply connected via Apple USB-C cable and using WLAN only then I get the kernel panics again during sleep when power nap is enabled.