F7 auto-rebooting unasked

Andreas Bernauer fedora at lysium.de
Mon Jun 11 09:48:46 UTC 2007

Beartooth wrote on Sun, Jun 10 2007 at 15:01 (+0000):
> On Sun, 10 Jun 2007 08:32:20 -0500, Mike Chambers wrote:
> > On Sun, 2007-06-10 at 12:58 +0000, Beartooth wrote:
> > 
> >> Actually, no, I don't even know what logs to look in, not where to find
> >> them. Is there a standard place to look?
> > 
> > /var/log
> > 
> > And  using the "uptime" command, you can see how long it's been since
> > your machine actually rebooted.
> Now there are three of them definitely doing it! Two more did it this 
> morning while I sat here.
> /var/log in two of them includes boot.log, boot.log.1, as well as
> .2,.3, 

You want to check /var/log/messages and look for 'klogd ... started'
messages (which get printed when the system boots).  My log files show
the BIOS RAM map after the klogd entry.

Say 'last' on the terminal after you suspect a reboot.  It shows which
users have been logged in and out lately.  It also shows when the
machine was rebooted (if within the log file's range).

> uptime for the three with problems lists times of around an hour; for the 
> old P2, it says 6 1/2 days.

Well, 6 1/2 days uptime does not look like regular reboots, does it?

> The strangest thing is that my main machine, which pulled the trick this 
> morning, is still running FC6.

Which sounds like a problem with some component that both of your
machines share, e.g. graphics driver as described or something else,
or your UPS.

> We have had a few short (like under 10-second) power glitches here
> lately; but all the machines are on UPSs, which barely managed to
> beep once. What's more, the main machine, which rebooted
> spontaneously for the first time this morning, is on the same UPS as
> the old P2, which did not.

I don't have UPS, but I know that the init process has a special mode
for power losses.  Usually, the machine is powered down as long as the
UPS has power.  See /etc/inittab, entries 'pf' and 'pr'.  Does the
problem go away, if you change the shutdown commands there?


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