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Debian 11: random reboots, no clue!

Linux Kernel, Network, and Services configuration.
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Danielsan
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Debian 11: random reboots, no clue!

#1 Post by Danielsan »

Dear All,

my brother's Debian 11 is having an annoying issue: it looks like every time he logs into the session (XFCE, lightDM) and opens Firefox or Zoom the computer reboots mysteriously; usually it happens within 3 or 4 time in a row and then the session becomes stable.

Based on my knowledge I couldn't fin any clear insight, watching the logs (in attachment) I see when the computer is restarting but there is not any clear error, kern panic or segfault comment, it is really clueless for me; eventually I have been starting to think it may be some ram bank failure.

Any help is really appreciated, thanks!

D.
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0916-dmesg.7z
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0916-kern02.log.7z
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0916-syslog.txt.7z
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dlu2021
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Re: Debian 11: random reboots, no clue!

#2 Post by dlu2021 »

After a quick scan through the syslog.txt, I see eight of these, which look suspicious:

Sep 16 17:03:54 minitower systemd[1]: Started Unattended Upgrades Shutdown.

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Danielsan
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Re: Debian 11: random reboots, no clue!

#3 Post by Danielsan »

Hi thanks for the catch!

Actually we installed the unattended-upgrade package... May it be the cause?

I am going to uninstall it and check what is going to happen!

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Re: Debian 11: random reboots, no clue!

#4 Post by Danielsan »

We removed almost all the USB extra devices however it looks like the situation is getting worst. I have started thinking it may be an issue with the power unit and I asked him to use a Debian Live and check if the issue happens the same.

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Re: Debian 11: random reboots, no clue!

#5 Post by pcalvert »

What is the output of this command?

Code: Select all

apt policy intel-microcode
Last edited by pcalvert on 2021-09-22 17:06, edited 1 time in total.
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Re: Debian 11: random reboots, no clue!

#6 Post by Hallvor »

About unattended-upgrades:

Check the configuration file. I have enabled necessary reboots after upgrades on my Raspberry Pi 1.

Verify that in the configuration file: /etc/apt/apt.conf.d/50unattended-upgrades you have set:

Unattended-Upgrade::Automatic-Reboot "false";

This will prevent the software to issue reboot if needed by the upgrades.
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