M1 MacBook Pro crashes and restarts a few times a day

Around 2-3 times a day, my M1 MacBook Pro on macOS Big Sur 11.0.1crashes and restarts.

This will happen when I'm doing anything from browsing the internet to using xcode.


The screen looks like it glitches out to purple and then it just restarts automatically



MacBook Pro 13″, macOS 11.0

Posted on Dec 4, 2020 1:37 PM

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Posted on Jan 4, 2021 3:28 PM

Maybe some success.... I had a call with Apple Tech Support. Amazingly patient. Here is my configuration that crashes:

1 USB-C port is connected to an Anker 8-in-1 usbc hub which has HDMI, 2xusbc 2xusba, sd-card, ethernet.

1 usb-c port connected to a Dell monitor via a usbc to display port cable. More on why the separate connection to external display.


His conjecture was that somehow the video processor in the hub was confusing the M1 coming out of sleep.

So I used a basic usbc hub with no video out (just usbc power in, usbc to M1, 3xusba, SD-card). I used the other usbc port on the M1 to drive the external monitor.


I have had no crashes over the last few days.

However, when I connected the HDMI out of the Anker hub to my monitor, it promptly crashed.


Suggestions:

(a) Try to use hubs that don't have video out.

(b) Use the M1's own usbc to drive external monitors.

I do realize that not all of you will have the configuration or the same crashes that I do. Apple is looking through my crash logs to determine the cause; no hub should crash an OS.




154 replies

Dec 5, 2020 12:54 PM in response to gotfrap

Reading the stack trace and seeing this:

com.apple.iokit.IOBluetoothSerialManager 8.0.1f5


made me believe it was bluetooth related and I realized that this problem started around the same time I got my new Alexa Echo. So I stopped connecting my Mac to it and I haven't crashed since. Maybe too many devices connected at once, or maybe its the Alexa's fault.

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M1 MacBook Pro crashes and restarts a few times a day

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