What is SOCD report detected: (AP watchdog expired)?

What is SOCD report detected: (AP watchdog expired)? I have only had my Mac Mini a few days, and it has the latest Big Sur updates.


Yesterday, while watching a YouTube video, my Mac Mini restarted, and posted an error, "SOCD report detected: (AP watchdog expired)".


This morning, got to my machine, ready to work, and noticed the unit restarted, and a message was on the screen, 'SOCD report detected: (AP watchdog expired)'.


What does this mean? How do I fix it? Thanks


Posted on Mar 1, 2021 5:25 PM

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Posted on May 23, 2021 5:17 PM

I narrowed this down to the USB-A ports and older USB devices.


I had a USB 4-port hub with a few USB devices attached and it would do it. I took out the hub and just had a 10-year-old USB drive I was using for my TimeMachine backup and it still did it, but less often. I disconnected the USB drive and it hasn't done it for three weeks straight.


I now just hook up the backup drive abou3 times a week just long enough to do a backup and then disconnect it.

115 replies

Jul 15, 2021 5:48 AM in response to circatee

I just received one myself. I got a green screen, then it rebooted. The first thing I thigh was OMG I have the green screen of death, then I remembered I am on a MAC and it was a blue screen of death on my windows PC. I have a network in the house with a a number of devices. I have run into issues with software over the years but based on what I am reading it may be the external USB hub. Does that mean they under powered the Mac mini? It seems to be going on since 11.2, so that tells me Apple does not give a care on fixing it or even acknowledging the issue. I'm on 11.4.


If Apply care monitors this can you address this please. Please do not tell us to reboot. One reason we paid so much for the Apple is because we did not want Microsoft resolutions ("When in doubt reboot"). If there is a known issue then state what it is and when your estimated fix time is.


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What is SOCD report detected: (AP watchdog expired)?

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