Rebooting on its own

grant123 · Veteran Joined: 23 Mar 2005 Posts: 1099

My Gentoo system has started rebooting on its own, frequently. There doesn't seem to be anything interesting in /var/log/messages. How should I look into this?

lekto · Posted: Tue Jun 04, 2024 2:19 pm Post subject:

It is summer now (at least in the northern hemisphere); your PC might just overheat, so check temperatures. Also, try to run LiveGUI USB to make sure it isn't your system's fault.

grant123 · Veteran Joined: 23 Mar 2005 Posts: 1099

I moved the SSD to another system and the behavior is the same unfortunately. Both systems are quite cool to the touch.

lekto · Posted: Tue Jun 04, 2024 2:46 pm Post subject:

It looks like there might be a problem with the system or the SSD.
Cold to the touch might also mean overheating if there is a poor connection between a CPU and a heatsink, but since both machines are cool, it probably isn't.

grant123 · Veteran Joined: 23 Mar 2005 Posts: 1099

This started happening after a fairly large emerge world update the other day so at this point I'm certain it's software. There must be some way to track it down? I would try a newer kernel but the system won't even stay up long enough to compile it.

lekto · Posted: Tue Jun 04, 2024 4:09 pm Post subject:

I had a "few times" similar issue when something broke after a system update, and I didn't know which package caused that. Run genlop -l and check what has been updated since the last time your system was working flawlessly, and mask them. Downgrade everything Portage wants. Now, make sure your system is stable, then start unmasking and updating packages and testing if your system is stable. After updating some packages, it might be necessary to reboot your machine.
This method always worked for me. If by change this "fairly large emerge world update" was emerge --emptytree @world after changing profile, I think it would be better to restore the system from backup and do emerge --emptytree @world a few packages at the time.

Hu · Administrator Joined: 06 Mar 2007 Posts: 22619

Did that recent large update include a new kernel? If so, start by dropping back to the kernel from before the update.

Banana · Posted: Tue Jun 04, 2024 5:20 pm Post subject:

To make sure it is not a temperature thing: Try at least something like https://wiki.gentoo.org/wiki/Lm_sensors and have a look at the temperatures
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grant123 · Veteran Joined: 23 Mar 2005 Posts: 1099

I'm still having this problem unfortunately.

I set up lm-sensors and everything is between 22C and 35C including the NVME sensor. Is there a bash one-liner that will dump 'sensors' to a file every 10 seconds so I can check the most recent readings after it reboots?

There must be a way to gather more info on why a system rebooted?

grant123 · Veteran Joined: 23 Mar 2005 Posts: 1099

After more testing I think this may be due to a USB network adapter overheating and freezing/rebooting the system. Still testing...

grant123 · Veteran Joined: 23 Mar 2005 Posts: 1099

I tried disabling power save mode on the USB adapter like this but it still reboots:

Banana · Posted: Thu Aug 08, 2024 6:07 am Post subject:

Did you check for loose connections or broken connectors?
What happens if you do not use the USB network adapter?
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AprilGrimoire · n00b Joined: 05 Jun 2020 Posts: 57