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With your contribution you confirm my concerns expressed in this message:

Considering that it is impossible that all of our HUBs/Displays with Thunderbolt ports have failed at the same time since the introduction of Sequoia, at this point it is clear that the problem lies in the Kernel that has created some incompatibility.

If other users also confirm that they are using Thunderbolt devices connected to the computer when the problem occurs, we will at least have identified the cause.

Now the problem is getting Apple to understand this and hoping for a solution.
For me it happens without anything external connected (I only use an external devices when making backup).
Other than having Rosetta added I have an older printer driver installed. Behavior similar to describer here: no error messages. Sometimes the popup that the MBP could not restart logout due to risk of losing unsaved work, requiring manual intervention.
 
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For me it happens without anything external connected (I only use an external devices when making backup).
Other than having Rosetta added I have an older printer driver installed. Behavior similar to describer here: no error messages. Sometimes the popup that the MBP could not restart logout due to risk of losing unsaved work, requiring manual intervention.
Yeah, it is also not related for me. But it has been stable, as long as I don't keep system monitoring software, like istat menu, running.

What has not been stable, is the emoji picker and I am amazed how slow and badly implemented it is, for such a simple function. I have now installed emojifinder.
 
I am not able to reproduce this issue on a M4 16" MacBook Pro and M3 14" MacBook Pro. Did you run Etrecheck? Did you check your Crash Reporter Logs? Did you install any Third-Party Anti-virus or security apps or optimizer apps? Instead off using macOS beta versions, you should stick with the stable macOS Sequoia version.
 
I am not able to reproduce this issue on a M4 16" MacBook Pro and M3 14" MacBook Pro. Did you run Etrecheck? Did you check your Crash Reporter Logs? Did you install any Third-Party Anti-virus or security apps or optimizer apps? Instead off using macOS beta versions, you should stick with the stable macOS Sequoia version.
I tried everything. Etrecheck, Norton Antivirus, Logs, clean install, everything.
I use stable macOS Sequoia versions but I installed beta versions because the problem is still here, not only for me as you can read in this thread.
 
I tried macOS 18.3 beta 3 today. Nothing changed.
After the release of the stable build I will request a warranty replacement. At this point, I'm afraid it's a problem in the hardware of some Macs.
 
I tried macOS 18.3 beta 3 today. Nothing changed.
After the release of the stable build I will request a warranty replacement. At this point, I'm afraid it's a problem in the hardware of some Macs.
Did you end up getting a warranty replacement? I've been into the Genius Bar several times over the past two months to no avail. They did a revive on my machine, which didn't work. Then, the only thing they could suggest is to roll back to Sonoma (which took ~8 hours and did nothing). So I'm back to the latest version of Sequoia (actually just installed today -- though I'm not at all hopeful that anything will have changed). It does seem like it's hardware-related, huh? Oh well, it's hard to justify replacing my machine since it does everything else I need it to, even if it is nearly 5 years old.
 
Did you end up getting a warranty replacement? I've been into the Genius Bar several times over the past two months to no avail. They did a revive on my machine, which didn't work. Then, the only thing they could suggest is to roll back to Sonoma (which took ~8 hours and did nothing). So I'm back to the latest version of Sequoia (actually just installed today -- though I'm not at all hopeful that anything will have changed). It does seem like it's hardware-related, huh? Oh well, it's hard to justify replacing my machine since it does everything else I need it to, even if it is nearly 5 years old.
I haven't had time to devote to it in the last few weeks, but I formatted everything again, installed the operating system from scratch (Apple's servers installed Sonoma for me), upgraded to Sequoia, restored the Time Machine backup, launched the screen saver and after 30 minutes I went back to the computer and it had rebooted.
Truly speechless. I hope to be able to contact them next week. I work with this Mac and can't afford any interruptions at this time.
 
...upgraded to Sequoia, restored the Time Machine backup

Try to start from scratch without restoring from a TimeMachine Backup. It could be related to your user folder e.g. bad drivers...
 
Try to start from scratch without restoring from a TimeMachine Backup. It could be related to your user folder e.g. bad drivers...
As I seem to have written in the past, I also did a clean install without restoring Time Machine (with an empty account) but even then I had reboots with macOS 15.1. Seeing that it also rebooted with this secondary user then I restored my Time Machine backup by recreating my primary user.
It's not like I have that much time to waste each time. This time I restored the backup directly.
 
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