Ubuntu shutdown log

Question

My pc with ubuntu server 12.10 installed on it shutdowns itself. How can i find the reason? I think that it is not depend on hardware.

any help will be appreciated

Answer 1

The most common reason for this behavior is over-heating. Is this a laptop? Can you feel the machine heating up before it shuts down?

Relevant log files should be in /var/log, specifically, have a look at /var/log/messages and maybe /var/log/pm-powersave.log and /var/log/pm-suspend.log.