I have no idea of what is happening since I can’t even find any decent logs in Console.app, but it seems that the latest update to macOS Tahoe (26.3) has a serious bug.

My desktop (a Mac Mini M2 Pro) has been crashing repeatedly since the update, and the symptom is always the same: it suddenly becomes sluggish (the mouse cursor slows down, then freezes completely), and then after a minute both my displays flash purple and then go black as the machine reboots.

For a machine that used to be on 24/7 with zero issues, this is a definite regression.

I’ve tried keeping ActivityMonitor open to see if I can spot any process that is consuming too much CPU or memory (the obvious suspect would be WindowServer), but everything looks normal until the crash happens, and there is only so much attention one can spare while, you know, doing productive stuff.

I have a sneaking suspicion that it might be Apple’s container framework, but I have no way to confirm that other than (I guess) stop using it for a few days.

But, again, the fact that I can’t find any logs or error messages in Console.app and that searching for anything inside it is still a nightmare is a testament to Apple’s general software quality and ability to troubleshoot anything these days…

I filed it as FB21983519 in case anyone cares.