M1A random resets when connected to external display

[mrianforest]

I have the M1 Air and an LG Ultrafine 5K display connected over thunderbolt together with a Sabrent 2TB thunderbolt 3 SSD in the other slot.

Randomly, the Air will restart but not before showing a pink screen and then that's that. It doesn't really do it whilst I'm using the machine, just when it's sat there doing nothing. Could be linked to the screensaver and energy settings maybe, not sure.

Anyway, looks like the bug has been around for a while as I've seen it on Google but wasn't sure if anyone knows of a fix, or a workaround for now maybe?

Cheers!

 

[pmbooks]

YES! Exact same pink screen flashed before shutdown/reboot, after about a minute following screen freeze. I too have the M1 Air and an LG external monitor. BUT, I see this happening also disconnected from the monitor (at work with monitor and at home without). Happening once or twice each day, for several weeks now. I thought the last Beta update (last night) might include a fix, but nope...just shut down again. EI back up regularly in case it bites dust, but eventually I'll have to call Apple and troubleshoot with them. Any luck yourself on this?

 

[mrianforest]

Ok well, I've managed to stop it.

I set the screensaver to show after 10 minutes.
In power options, I set "turn the display off after 10 minutes"

I also set:
Prevent computer from sleeping automatically...
and
Wake for network access

That appears to have stopped the random reboots.

 

[pmbooks]

Ok well, I've managed to stop it.

I set the screensaver to show after 10 minutes.
In power options, I set "turn the display off after 10 minutes"

I also set:
Prevent computer from sleeping automatically...
and
Wake for network access

That appears to have stopped the random reboots.

Can't wait to find out if these work for me. (shouldn't be too long, haha). How did you decide on these particular tweaks?

 

[mrianforest]

I figured it had to be something to do with power management and since then I've had no shutdowns whatsoever.

 

[pmbooks]

Sadly, it did not work for me, as I opened my computer from overnight sleep and it had shut down and rebooted between yesterday afternoon and this morning. Hmmm...

 

[ThirteenXIII]

not always a restart but mine freezes and I need to force shut it down. or other elements dont work. my work config is a M1 MacBook Pro (8GB ram/256gb) with LG UltraFine 5K.

 

[pmbooks]

Latest build (21A5522h) appears to have solved the issue for me.