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How do I find logs that report the cause of a system crash?

By John Parsons

My computer with Trusty is often rebooting, apparently in a random way. I have looked in system register but there are so many logs that is quite difficult to find the ones which only report the error that made the system reboot. How can I find only those which caused the reboot?

2 Answers

You can look at the logs leading to the last boot with

journalctl -b -1 -e

Of course, read man journalctl first.

You can begin by checking /var/log/auth* logs. Also look at this link for possible reasons.

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