Re: spurious reboot

[jgw%sdf.org@localhost]

Andy Ruhl <acruhl%gmail.com@localhost> wrote:

> On Mon, Nov 25, 2013 at 9:48 PM, Emmanuel Dreyfus <manu%netbsd.org@localhost> 
> wrote:
> > Hi
> >
> > I have a new x86 machine that reboots on its own a few times a day.
> > There is no kernel panic (I have ddb.onpanic=1 to be sure I could not
> > miss it), no warning message, nothing, it just reboots.
> >
> > Is there a way for a software bug to cause that? I assumed so far that
> > software problems would cause a panic, and therefore I focused on
> > finding a hardware problem. but now I have replaced every bit of the
> > machine except disk and RAM, I am not sure of that point anymore.
>
> This might not be very likely, but I've seen a hardware ACPI bug cause
> this.  You might try booting a different OS off of a USB stick or
> something and see if the problem continues.
>
+1. Had a laptop doing that due to something in the ACPI thermal system
reporting an occasional rediculously high CPU? temp.  Once I determined
that the system really wasn't overheating I simply changed the appropriate
script under /etc/powerd/ to not initiate shutdown.