SOCD report detected: (AP watchdog expired)

I have a 16 GB/1 TB M1 MacBook Air. It runs 24 x 7 and I am getting the following kernel panic:

SOCD report detected: (AP watchdog expired)

In my case I have and OWC Thunderbolt 3 dock connected. There are a bunch of peripherals connected to the dock. I sure hope this is a software issue. Not interested having to change out the hardware.

I have the exact same problem. Support suggested I take out everything connected to the M1 and any hubs, then restart at each phase and see what happened. (I did and all restarts worked properly)

This of course, was after doing an OS reinstall as well

They say if I can't replicate the error (get the M1 to crash), then they can't help me lol

Same log: SOCD report detected: (AP watchdog expired)

Would love to know a solution

Connected through a non-powered hub is a WD MY Book (I use this to back up certain files, once a month) and a Focusrite audio signal box.

Hub is connected directly to the M1, as is OWC for Time Machine, monitor, and dongle for wireless logitech keyboard

Also have speakers and an OWC for Time Machine connected to the M1

And like most of you all, support has unfortunately not been very helpful

Love to hear any fixes on this. Good luck to all!

M1 Mac mini - Just got: SOCD report detected: (AP watchdog expired). My screen was a sort of checkerboard pattern then system restarted. I have a WD My Book Studio connected via firewire 800 --> 2 Apple branded devices that convert it to USB-C. It's my Time machine backup.

I also get kernel panics on an almost daily basis which seem to be related to sleep/wakeup.

This is my second M1 mini, the first had to be returned because of login password bugs in Big Sur. Wouldn't accept the correct password.

Overall a nice machine, but I am getting frustrated with regular crashes. Makes me think I am running windows 10.

(M1 Mini, 16gb, 1TB)

Eh, again, I am not so sure it is USB of any kind causing this out of blue crash. I have an ancient WD USB 2.0 Journaled HFS+ HD hooked up. A less ancient (still sold) Seagate APFS HD, I think USB 3. Both powered.

Both are also direct into the Mini USB. Not the C port.

Over a few months now, I have only had the crash one time!

My money is 100% on something else. Probably system related and, maybe Apple fixed it with the 11.3 update. No crash since then.

Moi aussi. Just happened to me for the first time, and I've had this Mac Mini M1 for 4 or 5 months now. I had running:

• Youtube
• Chrome
• Safari
• Outlook
• Finder

I have a Seagate USB drive connected, and a powered USB hub with a Logitech webcam and a PreSonus Studio24C audio interface.

It went full green screen when I clicked within Finder to navigate to a different folder. Not coincidentally, I'm sure, Big Sur pushed an update this morning. I am now on 11.4. Before this update, it had never happened.

So I had the same issue just a few minutes ago. I have a Mac mini M1 with 16 GB of RAM. Had no problems for the last month. All the time I had the following devices connected:

• USB Microphone (Samson Meteor mic)
• unpowered USB-A-Hub
  • USB Mouse and Keyboard
  • Logitech USB Webcam
• USB-C Hub
  • Philips Full-HD Monitor via HDMI Port of the Hub
  • Creative Pebble V3 Speakers
• USB-C Sandisk Extreme external SSD 1 TB
• second Philips Full-HD Monitor via the HDMI Port of the Mac mini

The restart happend when watching a YouTube video in Firefox. Other apps running where Slack, Whatsapp Desktop and Zoom (no active video call, just idle).

Hopefully this is not a hardware error with the new chips...

A watchdog timer (WDT) is a hardware timer that automatically generates a system reset if the main program neglects to periodically service it. It is often used to automatically reset an embedded device that hangs because of a software or hardware fault.

It seems that this issue is not with all m1 Macs.. Its like a component defect in the logic board of some Macs....so only those users are facing problems.. Apple needs to be intimated somehow of this grave issue...but its baffling why they have not released a fix or an official statement regarding this serious issue

d3cbgf wrote:

my theory: ...there's some sort of leak or overflow that builds up over time, and eventually the system has to restart.

This would imply that relatively frequent manual shutdown/restarts would avoid the problem. I wonder if that's the case for people here. I tend to leave my computer running all the time, just shutting off the monitor to save power. I have this crash maybe once every two or three months.

additional information from terminal perspective (seeing lots of Realtek lol)

system_profiler SPUSBDataType

USB:

USB 3.1 Bus:

Host Controller Driver: AppleT8103USBXHCI

USB 3.1 Bus:

Host Controller Driver: AppleT8103USBXHCI

BillBoard Device:

Product ID: 0x2171

Vendor ID: 0x0bda (Realtek Semiconductor Corp.)

Version: 1.15

Serial Number: 12***FGH

Speed: Up to 12 Mb/s

Manufacturer: Realtek

Location ID: 0x00100000 / 1

Current Available (mA): 500

Current Required (mA): 0

Extra Operating Current (mA): 0

USB 3.0 Bus:

Host Controller Driver: AppleEmbeddedUSBXHCIFL1100

PCI Device ID: 0x1100

PCI Revision ID: 0x0010

PCI Vendor ID: 0x1b73

4-Port USB 3.0 Hub:

Product ID: 0x0411

Vendor ID: 0x0bda (Realtek Semiconductor Corp.)

Version: 1.21

Speed: Up to 5 Gb/s

Manufacturer: Generic

Location ID: 0x02500000 / 2

Current Available (mA): 900

Current Required (mA): 0

Extra Operating Current (mA): 0

4-Port USB 2.0 Hub:

Product ID: 0x5411

Vendor ID: 0x0bda (Realtek Semiconductor Corp.)

Version: 1.21

Speed: Up to 480 Mb/s

Manufacturer: Generic

Location ID: 0x02100000 / 1

Current Available (mA): 500

Current Required (mA): 0

Extra Operating Current (mA): 0

SteelSeries QCK Prism Cloth 3XL:

Product ID: 0x1516

Vendor ID: 0x1038

Version: 1.02

Speed: Up to 12 Mb/s

Manufacturer: SteelSeries

Location ID: 0x02140000 / 4

Current Available (mA): 500

Current Required (mA): 350

Extra Operating Current (mA): 0

Wired Gaming Mouse:

Product ID: 0x0036

Vendor ID: 0x258a

Version: 1.08

Speed: Up to 12 Mb/s

Manufacturer: SINOWEALTH

Location ID: 0x02130000 / 5

Current Available (mA): 500

Current Required (mA): 480

Extra Operating Current (mA): 0

YubiKey OTP+FIDO+CCID:

Product ID: 0x0407

Vendor ID: 0x1050

Version: 5.27

Speed: Up to 12 Mb/s

Manufacturer: Yubico

Location ID: 0x02120000 / 3

Current Available (mA): 500

Current Required (mA): 30

Extra Operating Current (mA): 0

SteelSeries Apex Pro TKL:

Product ID: 0x1614

Vendor ID: 0x1038

Version: 4.01

Speed: Up to 12 Mb/s

Manufacturer: SteelSeries

Location ID: 0x02110000 / 6

Current Available (mA): 500

Current Required (mA): 500

Extra Operating Current (mA): 0

USB 3.1 Bus:

Host Controller Driver: AppleUSBXHCITR

PCI Device ID: 0x15f0

PCI Revision ID: 0x0006

PCI Vendor ID: 0x8086

system_profiler SPPCIDataType

PCI:

pci8086,15f0:

Type: USB eXtensible Host Controller

Driver Installed: Yes

Tunnel Compatible: Yes

Pause Compatible: No

MSI: Yes

Bus: PCI

Slot: Thunderbolt@3,0,0

Vendor ID: 0x8086

Device ID: 0x15f0

Subsystem Vendor ID: 0x8086

Subsystem ID: 0x0000

Revision ID: 0x0006

Link Width: x4

Link Speed: 2.5 GT/s

pci144d,a809:

Type: NVM Express Controller

Driver Installed: Yes

Tunnel Compatible: Yes

Pause Compatible: Yes

MSI: Yes

Bus: PCI

Slot: Thunderbolt@4,0,0

Vendor ID: 0x144d

Device ID: 0xa809

Subsystem Vendor ID: 0x144d

Subsystem ID: 0xa801

Revision ID: 0x0000

Serial Number:

Link Width: x4

Link Speed: 8.0 GT/s

[Personal Information Edited by Moderator]

I shall correct myself, then. This is probably a timeout of the SoC management processor, whatever that may be. Something in the firmware locked up doing something, or perhaps there's a firmware bug. I'm hoping it isn't a hardware bug that can't be corrected with a newer firmware image.

As I said above, I did submit a feedback with the .panic report the last time I encountered the bug, and maybe that does something helpful that wasn't previously logged by paid testers working directly for Apple, or by other volunteer testers in the community.

Just to add another datapoint, here is my system setup:

• Mac Mini (M1 2020)
• 16 GB memory
• 256 GB storage
• Big Sur 11.4
• Received just 6 days ago and used Migration Assistant to migrate from an iMac 2020 (Intel) running Mojave.
• So far, the computer has only crashed overnight while asleep, not while I was using it; it's now happened two nights in a row.
• Peripherals:
  • HDMI: Main monitor
  • USB-C (1): Second monitor via HDMI plugged into USB-C hub (not powered)
  • USB-C (2): Elgato Cam Link 4K via USB 3 -> USB-C adapter
  • USB 3.0 (1): Powered USB 3.0 hub
  • USB 3.0 (2): [Nothing]
  • Ethernet cable (because in addition to crashing for no reason, this computer also has unforgivably bad wifi)

I just removed the unpowered USB-C hub that I was using to connect my second monitor via HDMI and instead plugged that monitor into its own USB-C adapter. Let's see if that works. I'm not exactly hopeful...

I've had my M1 Mac Mini (256GB 16GB RAM) running 24/7 since February. Only after the latest update (11.5.1) did I encounter the SOCD crash.

Devices I have had attached 24/7 since March.

8TB EasyStore WD (USB A)

Sabrent NVME enclosure EC-SNVE (USB C)

Anker USB C to DisplayPort

Logitech M270 (USB A)