What causes my MacBook Pro to restart after sleep?

I'm having this issue every 1-2 days after updating to Sequoia 15.0, I9 Macbook 2019

Just happened to me too, but I'm on Sonoma (14.7) and an old Intel Macbook (16" from 2019). I also had LG Ultrafine 24" connected in the clamshell mode.

panic(cpu 1 caller 0xfffffff022e8c0cc): Sleep/Wake hang detected @IOPMrootDomain.cpp:13000

This has been happening to me for the past month. I've noticed reports from people using an external monitor. I also use a 4K Dell monitor. This seems to confuse the Mac quite a bit, even before 2020.

Apple Care told me they won't help until I upgrade to Sequoia. Sigh.

- WiFi is never on, my 2019 16" mbpro is wired only.

- My mbpro is connected to TWO external monitors, a 24 LG Ultragear and a 32" LG HDR 4k

Found in another forum that users have similar problems due to Bootcamp. I have disabled my Bootcamp partition and exluded it from spotlight search. Since then I haven't had any more sleep-wake kernel panics. Does that solve your problems as well?

Has anyone found a solution? I've been running Sequoia fine but since about a week ago I've been restarting during sleep with the same error on restart. Upgrading to 15.2 didn't solve the issue either. I haven't installed any new software or added any new hardware before it started happening.

2019 Macbook Pro 16" (Intel).

Apple Care told me they won't help until I upgrade to Sequoia. Sigh.

• WiFi is never on mbpro is wired only.
• My mbpro is connected to TWO external monitors, a 24 LG Ultragear and a 32" LG HDR 4k
• "Automatically Adjust Screen Brightness" is off

By chance is this only happening on 16" Intel macbooks?

Me too, my system is the latest version 15.0, I just want to know what happened

These MacBooks have some issues when using external monitors. I use a Dell 4K 27" monitor with USB-C, recommended by Apple, and yet the computer's performance drops significantly in many areas. This has been happening since it was brand new, also occurred with my 2018 MacBook, and happens to a friend who has the same 2019 MacBook. Interestingly, if I mirror the screen to a TV over WiFi, this doesn't happen. It works fine. The issue seems to be with the cable.

Apple support is inefficient regarding this, at least here in Brazil. They only know how to follow protocols. Once, they said they would escalate my case to the engineering team in the U.S., but I never heard back. It's frustrating.

In the past few months, the computer's performance has declined even more. Here we go, falling into planned obsolescence once again.

Again...

panic(cpu 1 caller 0xfffffff01a0046d8): Sleep/Wake hang detected @IOPMrootDomain.cpp:13006
Debugger message: panic
Memory ID: 0x6
OS release type: User
OS version: 22P1072
macOS version: 24B91
Kernel version: Darwin Kernel Version 24.1.0: Thu Oct 10 20:30:11 PDT 2024; root:xnu-11215.41.3~1/RELEASE_ARM64_T8010
KernelCache UUID: 1A0755303883D8C6591FA3F711FA86B5
Kernel UUID: 3D08C93A-DB6E-3975-8B1B-5F2D8A7106D7
Boot session UUID: 2F1A7356-8552-44E5-8931-9A26B67F5B87
iBoot version: iBoot-11881.41.5
secure boot?: YES
roots installed: 0
x86 EFI Boot State: 0x16
x86 System State: 0x1
x86 Power State: 0x1
x86 Shutdown Cause: 0x1
x86 Previous Power Transitions: 0x100010001
PCIeUp link state: not available
macOS kernel slide: 0x1aa00000
Paniclog version: 14
Kernel slide:      0x00000000127f8000
Kernel text base:  0xfffffff0197fc000
mach_absolute_time: 0x1ae935f3f4bb
Epoch Time:        sec       usec
  Boot    : 0x6741458c 0x0000d230
  Sleep   : 0x6762337a 0x000e9762
  Wake    : 0x67623469 0x000945bd
  Calendar: 0x676234c5 0x000e1eff

Zone info:
  Zone map: 0xffffffdc00188000 - 0xffffffe200188000
  . VM    : 0xffffffdc00188000 - 0xffffffdce67ec000
  . RO    : 0xffffffdce67ec000 - 0xffffffdd334b8000
  . GEN0  : 0xffffffdd334b8000 - 0xffffffde19b1c000
  . GEN1  : 0xffffffde19b1c000 - 0xffffffdf00180000
  . GEN2  : 0xffffffdf00180000 - 0xffffffdfe67e8000
  . GEN3  : 0xffffffdfe67e8000 - 0xffffffe0cce50000
  . DATA  : 0xffffffe0cce50000 - 0xffffffe200188000
  Metadata: 0xffffffe3e2c44000 - 0xffffffe3e4444000
  Bitmaps : 0xffffffe3e4444000 - 0xffffffe3e4570000
  Extra   : 0 - 0

TPIDRx_ELy = {1: 0xffffffdeff6a9df0  0: 0x0000000000000001  0ro: 0x0000000000000000 }
CORE 0: PC=0xfffffff019b41354, LR=0xfffffff019b41350, FP=0xffffffeff3b1fe60
CORE 1 is the one that panicked. Check the full backtrace for details.
Compressor Info: 4% of compressed pages limit (OK) and 1% of segments limit (OK) with 0 swapfiles and OK swap space
Panicked task 0xffffffdf001239e8: 0 pages, 236 threads: pid 0: kernel_task
Panicked thread: 0xffffffdeff6a9df0, backtrace: 0xffffffeff3c7b820, tid: 4136316
		  lr: 0xfffffff019a05fa4  fp: 0xffffffeff3c7b890
		  lr: 0xfffffff019b3f228  fp: 0xffffffeff3c7b900
		  lr: 0xfffffff019b3e2fc  fp: 0xffffffeff3c7b9f0
		  lr: 0xfffffff0199c56bc  fp: 0xffffffeff3c7ba00
		  lr: 0xfffffff019a059e4  fp: 0xffffffeff3c7bdd0
		  lr: 0xfffffff01a0eb074  fp: 0xffffffeff3c7bdf0
		  lr: 0xfffffff01a0046d8  fp: 0xffffffeff3c7be30
		  lr: 0xfffffff019a61dac  fp: 0xffffffeff3c7bf20
		  lr: 0xfffffff0199d06c4  fp: 0x0000000000000000

Same on my i9 Macbook Pro 2019 with Sequoia 15.2 (since 15.0).

I have updated all deeper software such as VPN (Tunnelbear), Parallels Desktop or Paragon NTFS.

PowerNap is disabled. I have reset SMC and booted in SafeMode but the problem still persists.

I have no peripherals like external Monitor. Does anyone have a solution?

Same here, started a week or two ago. 2019 i9 MBP 16" connected to a Dell Ultrasharp U3425WE.

panic(cpu 0 caller 0xfffffff0227ca4a0): Sleep/Wake hang detected @IOPMrootDomain.cpp:12937
Debugger message: panic
Memory ID: 0x6
OS release type: User
OS version: 22P3051
macOS version: 24D60
Kernel version: Darwin Kernel Version 24.3.0: Thu Jan  2 20:06:28 PST 2025; root:xnu-11215.81.4~2/RELEASE_ARM64_T8010
KernelCache UUID: 3BB39ACE95BF51BF1B31787925CD59D2
Kernel UUID: 5E0311EE-A5B2-37BF-A7AE-F303066BB6B6
Boot session UUID: E20F01E7-37D4-4F55-A848-02EE29F14441
iBoot version: iBoot-11881.81.2
secure boot?: YES
roots installed: 0
x86 EFI Boot State: 0xd
x86 System State: 0x1
x86 Power State: 0x1
x86 Shutdown Cause: 0x5
x86 Previous Power Transitions: 0x100010001
PCIeUp link state: not available
macOS kernel slide: 0x12c00000
Paniclog version: 14
Kernel slide:      0x000000001afb0000
Kernel text base:  0xfffffff021fb4000
mach_absolute_time: 0x14b1c8e626e
Epoch Time:        sec       usec
  Boot    : 0x67aa45ba 0x00071e49
  Sleep   : 0x67ade2a1 0x0001c341
  Wake    : 0x67ade2a1 0x0007860e
  Calendar: 0x67ade2cb 0x000c6234

Zone info:
  Zone map: 0xffffffdc000f4000 - 0xffffffe2000f4000
  . VM    : 0xffffffdc000f4000 - 0xffffffdce6758000
  . RO    : 0xffffffdce6758000 - 0xffffffdd33424000
  . GEN0  : 0xffffffdd33424000 - 0xffffffde19a88000
  . GEN1  : 0xffffffde19a88000 - 0xffffffdf000ec000
  . GEN2  : 0xffffffdf000ec000 - 0xffffffdfe6754000
  . GEN3  : 0xffffffdfe6754000 - 0xffffffe0ccdbc000
  . DATA  : 0xffffffe0ccdbc000 - 0xffffffe2000f4000
  Metadata: 0xffffffe58373c000 - 0xffffffe584f3c000
  Bitmaps : 0xffffffe584f3c000 - 0xffffffe585060000
  Extra   : 0 - 0

TPIDRx_ELy = {1: 0xffffffde19c77260  0: 0x0000000000000000  0ro: 0x0000000000000000 }
CORE 0 is the one that panicked. Check the full backtrace for details.
CORE 1: PC=0xfffffff0222fea64, LR=0xfffffff0222fea60, FP=0xffffffe76746fe60
Compressor Info: 0% of compressed pages limit (OK) and 0% of segments limit (OK) with 0 swapfiles and OK swap space
Panicked task 0xffffffdfe66679e8: 0 pages, 237 threads: pid 0: kernel_task
Panicked thread: 0xffffffde19c77260, backtrace: 0xffffffe767487820, tid: 484447
		  lr: 0xfffffff0221c2020  fp: 0xffffffe767487890
		  lr: 0xfffffff0222fc8fc  fp: 0xffffffe767487900
		  lr: 0xfffffff0222fb9f0  fp: 0xffffffe7674879f0
		  lr: 0xfffffff0221816bc  fp: 0xffffffe767487a00
		  lr: 0xfffffff0221c1a60  fp: 0xffffffe767487dd0
		  lr: 0xfffffff0228b13a0  fp: 0xffffffe767487df0
		  lr: 0xfffffff0227ca4a0  fp: 0xffffffe767487e30
		  lr: 0xfffffff02221d980  fp: 0xffffffe767487f20
		  lr: 0xfffffff02218c6c4  fp: 0x0000000000000000

I still have the problems. It doesn't seem to be related to Bootcamp after all. I reinstalled macOS Seqouia (15.3.1) on a different partition and did not install any programs or make any settings here. The problem occurred too after a few days! So a reinstall of macOS will not bring any improvement. I reported the case to Apple Support. Maybe they can find a solution. I'll keep you updated.

No peripherals / no external monitor / only Apple Keyboard was connected via Bluetooth. MacBook Pro 16" 2019 i9 was on WiFi during standby.