SOCD report detected: (AP watchdog expired)

Eight days and counting, no more crashes/restarts. And when checking Terminal \ uptime, it has not restarted at night or anything.

I will add, I have a schedule setup now for Sleep. Sleep mode starts around 22:30 - 06:00...

I have a brand new MacBook Air and this has been happening to me from Day 1. I have been regularly engaged with 2nd level support. I have repeatedly wiped my disk, reinstalled Big Sur, and worked without any peripherals. It is still happening and they are now going to take my machine and replace the logic board (apple-speak for mother board).

Since this seems to be an edge condition, just changing the system environment (like moving HDD ports, etc.), could make the problem come and go. A Big Sur dot upgrade will be needed to fix it for good (even if it turns out to be an M1 hardware bug).

Hi all,

Just checking the following as common denominator:

how are you all with having the music app running when putting the M1 to sleep? It has only happened to me twice and it is likely that in both cases I had Music still running.

Good luck to us all!

I have two external disk connected USB-A always, not USB-c.

They are TOSHIBA 2T and HGST 1T sata driver.

And I found two times crashes, both green screen and reset, and cross macOS versions.

Some guys suggested disconnect ext driver or connect with an extension dock.

I didn't run the test.

Hope some path can solve the issue.

I've had my M1 Mini 16/512 since April, and just experienced this crash for the first time. I have been splitting my usage between the Mini and my Hackintosh via a TESmart DP KVM Switch. There have been instances when I switch, of the Dell Monitor not waking but never this crash. Reading the entire thread leads me to a couple of things that I have in common with others is the WD EasyStore 8TB drive, and this is the first week that I have used the machine continuously for more than a few hours. It has been running for 96 hours at this writing. I also have a hub attached w/a 2TB Samsung SSD installed, and a 6TB G-Drive connected to the USB 3.1 port on the hub. The WD rarely stays connected as it's a storage only, and I rarely read from that drive. It has been continuously connected during the current run. I am going to disconnect it, leave the machine on and see what happens in the next 3-4 days.

I managed to trigger this bug manually the other week. Running the latest version Big Sur 11.5.2 on an 8GB M1 Mac mini.

I have an WD Easystore external hard drive that I use for storing media. I simply did a finder search in a folder containing thousands of images, and this caused the system to immediately crash and reboot.

The crash was slightly different this time however. The moment it crashed, a bunch of rapid fire clicking sounds came out of the Mac mini's speaker. I double checked that it came out of the computer and not from the HDD. Also, instead of the screen turning completely green or pink before rebooting, it turned partially pink. There was a sort of a glitched-out, checkerboard pattern of pink squares all over the screen. This lasted maybe 5 seconds before it rebooted and I was greeted with the familiar SOCD AP watchdog pop-up.

I have not tried to repeat this, as I don't want to mess with any of the data on my hard drives. I figure it's worth sharing here though.

Look this might not be for everyone as it’s not cheap. Since starting to use a thunderbolt hub I haven’t had a crash in over a month or so.

I personally don’t know for sure but if the issue lies with the USB ports (as that was the problem for me), I would just run through the thunderbolt. It’s what I have done and I’ve had my M1 mini on since the last crash.

Expensive yes, but almost a bit of a investment as having an external SSD and other sorts through thunder gives great performance. Depends what you want I guess. Just my experience.

Thanks for letting me know! Are you sure the disk decryption has been completed though? It's supposed to run in the background after turning it off:

"Decryption occurs in the background as you use your Mac, and only while your Mac is awake and plugged in to AC power. You can check progress in the FileVault section of Security & Privacy preferences."

https://support.apple.com/en-us/HT204837

When it crashed, it showed a green screen. I have both WD HDD and Samsung T3 connected all the time. Hope this help.

Is your hub powered? That seems to make the difference with hubs

Best fix currently is eject the external drive during your streaming activities. Monitor thread for more details as they emerge.

External drive, not external monitor. Go ahead and leave your monitor plugged in. From what I have seen it’s just with external drives according to the posts that I have read

Send it back. We need to send Apple a message. These things are defective.

Just turn it off in preferences, security and privacy, FileVault. No need to do anything else.