Hmmm, second time in a week my M1 MacBook Pro has frozen and restarted itself while I was writing in Apple Mail. All standard up-to-date release versions of software.

@Miraz Hmmm you’re not alone in this; I wouldn’t worry about your new hardware! I run into fairly regular bugginess with Mail, particularly a reluctance to quit when I tell it to do so. It just sits there.

@Miraz hmm interesting. Run diagnostics. Sent back my MBP due to problem with trackpad

@pimoore Good thought re the OS update. Haven’t had any other issues at all.

@martinfeld Good to know. I quickly realised both problems came while using Apple Mail so that seems a likely culprit.

@rom I think it tracks back to Apple Mail. Be interesting if the next OS update changes anything.

@Miraz my M1 Mac Mini too. For me, I think it’s the cables I’m connecting to it to have a dual monitor setup.

Still researching but this seems to a big M1 issue

@tiff Interesting. No cables for me — in fact the battery was near fully charged and it wasn’t even plugged in to the power.

@Miraz strange! It’s been buggy for me but hoping it’s just Big Sur and not the machine as a whole

@Miraz Are you by any chance running any plugins? I use the excellent MailTrackerBlocker and as of the last OS update, Mail.app started doing weird things – slow to start and shutdown, random freezes etc. I turned off the plugin, restarted Mail.app and voila everything was back to normal. I then once again turned on the plugin, did the restart dance and have had no problems in the last week and a half.

@tiff I had this frequent freeze and crash issue on my M1 Air connected to a 24” monitor via HDMI. I switched the output to Display Port and have had zero issues since then. Maybe this is worth a try if your monitor supports Display Port.

@Miraz this is interesting. Been using Mail.app on MBP as well - pretty much stable even with SpamSieve. Is it only retrieving mail from iCloud? Maybe the Mail server is wonky. :)

@rom Thanks for the thought — mail comes from different servers. I’m not actually trying to troubleshoot, just observing the behaviour. If it starts to happen routinely, then I’ll worry. 😀

@pimoore I think that’s so. I hope the crash reports I’m dutifully sending off to Apple lead to some change somewhere.