Macbook Pro 16 crashes on sleep when external screen plugged

I have the same problem... Every day that I close the MBP 16 and use only the external monitor... The same log that you guys.

When the MBP restarts, the fan starting to work harder too..

Apple, what **** are you doing?

Yep exactly the same issue here MacBook Pro 16" crashes when sleeping with an external monitor..

panic(cpu 2 caller 0xffffff801669167c): Sleep transition timed out after 180 seconds while calling power state change callbacks. Suspected bundle: com.apple.iokit.IOGraphicsFamily. Thread 0x7cb0.

I tried that but it didn't work. (System Preferences -> Notifications -> Do Not Disturb -> Turn on Do Not Disturb and check "When the display is sleeping.")

Are there other settings that could also help? My monitor is also dell s2718d.

The only thing that works so far is turning sleep off completely. I really hope apple comes out with a fix soon...

Just chiming in to say I have this same problem. It has gotten worse with 10.15.5. I was able to find some combination of settings on 10.15.4 which allowed me to manually sleep the Macbook Pro while connected to an external display. Now that doesn't work any more.

It's not just Dell monitors I think since I am using an Acer Predator X34 monitor and it still happens.

Hy guys,

just to report that I have the same issue here. MBP 16 with 2 LG external monitors (bought at the Apple Store) daisy-chained with USB-C.

I had to stop using the MBP with the lid closed. I tried again today and after locking it, 2 min later, it crashed but this time, after the reboot I had an error message, which I never had before.

The message helped me find this thread actually.

I read in the comments that a fix is on its way... I guess we'll have to wait for it then !

In the mean time, I'll try the solution suggested earlier about the settings in the "Do not disturb" section.

I hope we'll have this issue fixed quickly !

Same issue, along with failed time machine backups to a network drive (smb) and glitches on webkit apps (chrome, brave, some apps) after waking up, that require reboot. All of these started to happen in the last couple of updates.

Please fix. We pay a premium for these machines. There's a reason I'm not buying an acer machine with windows. Fix now.

Problem allready exists, once again this morning.

panic(cpu 0 caller 0xffffff801889097c): Sleep transition timed out after 180 seconds while calling power state change callbacks. Suspected bundle: __kernel__. Thread 0x91a6b.

Backtracing specified thread

Backtrace (CPU 0), Frame : Return Address

0xffffff923df23900 : 0xffffff8018241868

0xffffff8215d93ab0 : 0xffffff801813c4d1

0xffffff8215d93b20 : 0xffffff801813ad0f

0xffffff8215d93b70 : 0xffffff80180fc1f1

0xffffff8215d93bb0 : 0xffffff801812163b

0xffffff8215d93c00 : 0xffffff8018872fd8

0xffffff8215d93c60 : 0xffffff8018872bda

0xffffff8215d93cb0 : 0xffffff80187e1272

0xffffff8215d93dc0 : 0xffffff801886e05d

0xffffff8215d93e00 : 0xffffff8018813cca

0xffffff8215d93ea0 : 0xffffff80188135f4

0xffffff8215d93ec0 : 0xffffff801815c605

0xffffff8215d93f40 : 0xffffff801815c131

0xffffff8215d93fa0 : 0xffffff80180c013e

I'm getting the same exact message, except I am NOT plugged to an external monitor. It started yesterday in the middle of a zoom meeting and it freaked me out as it was a super important meeting and I simply dropped out and computer shut down.

Issue with overheating and fan also happening here...

I'm having the same problem with my LG monitor.

panic(cpu 0 caller 0xffffff800609097c): Sleep transition timed out after 180 seconds while entering darkwake on way to sleep. Suspected bundle: com.apple.iokit.IOUSBHostFamily. Thread 0xded8a.

Backtracing specified thread

Backtrace (CPU 0), Frame : Return Address

2nd Brand New Machine in two weeks.

Bought a 8GB Ram model and had both of the issues below.

Exchanged for a 16GB Ram model. Same issues = systemic problems with current software/hardware interface.

I am having crash when sleep/plugged in issue even though I don't use an external monitor.

I am already on Catalina 10.15.6.

I have another issue too, not sure if they're related: pretty consistently my user interface locks up (can't type, move windows, etc. happens in all programs). I started up in safe mode and that issue has gone away for the time being.

Same issue here. Left the lid down, open it up after a while, boom, BSoD.

I have a dedicated GPU besides the integrated one. Once it was because of the Magic Mouse (reported Bluetooth) but another time was random, I just plugged in my iPhone before opening up the lid.

Same issue for me. I have an external Samsung Monitor. The issue got away, when the lid is closed, but once it's open it happens here and there over night. Pretty annoying. I've already updated to 10.15.7.

Still the same problem. MacBook 13 inch + 2x LG 4K from Apple store online, Catalina 10.15.7.

Every morning after Mac goes into sleep mode:

panic(cpu 6 caller 0xffffff8002e9092c): Sleep transition timed out after 180 seconds while entering darkwake on way to sleep. Suspected bundle: com.apple.iokit.IOThunderboltFamily. Thread 0x2ca5b.

Same issue for me with the last MBP16 and MacOS 10.15.7 + External Monitor LG 34UC99.

I will try to change some notifications settings but not very friendly

----

panic(cpu 0 caller 0xffffff800209092c): Sleep transition timed out after 180 seconds while calling power state change callbacks. Suspected bundle: com.apple.iokit.IOSkywalkFamily. Thread 0x32bbd.

Backtracing specified thread

Backtrace (CPU 0), Frame : Return Address

0xffffff81ffb5b900 : 0xffffff8001a41868

0xffffff92270cba10 : 0xffffff800193c4d1

0xffffff92270cba80 : 0xffffff800193ad0f

0xffffff92270cbad0 : 0xffffff80018fc1f1

0xffffff92270cbb10 : 0xffffff800192163b

0xffffff92270cbb60 : 0xffffff8002072f88

0xffffff92270cbbc0 : 0xffffff8002072b8a

0xffffff92270cbc10 : 0xffffff7f82e18c17

0xffffff92270cbd20 : 0xffffff7f82e170af

0xffffff92270cbd40 : 0xffffff7f82e16fb0

0xffffff92270cbd60 : 0xffffff7f82e16928

0xffffff92270cbd90 : 0xffffff800202e9d8

0xffffff92270cbdf0 : 0xffffff7f82e179fa

0xffffff92270cbe00 : 0xffffff8002013c7a

0xffffff92270cbea0 : 0xffffff80020135a4

0xffffff92270cbec0 : 0xffffff800195c605

0xffffff92270cbf40 : 0xffffff800195c131

0xffffff92270cbfa0 : 0xffffff80018c013e

Kernel Extensions in backtrace:

com.apple.iokit.IOSkywalkFamily(1.0)[CEB3CDA2-1D41-3238-BFBB-7097C2636DF5]@0xffffff7f82dff000->0xffffff7f82e45fff

dependency: com.apple.iokit.IONetworkingFamily(3.4)[26FE14A5-825D-35E4-BD06-C5B8A1AE1FD9]@0xffffff7f826b0000

BSD process name corresponding to current thread: kernel_task

Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev