Re: CPU fans shut off by Debian?
On Fri, 2005-07-08 at 15:39 +0100, michael wrote:
> On Fri, 2005-07-08 at 09:58 -0400, Stephen Lokitz wrote:
> > Hello,
> > I am running Sarge 2.4.27-2-686-smp on an intel SR1435VP2(which is
> > a 1U server platform) with dual 2.8 Xeon processors. I am required to
> > run the 2.4 kernel for my application. What appears to happen is that at
> > some random time after power on (~6-20 hrs), the cpu fans shut off which
> > causes the system to overheat and shut down. I can immediately restart
> > the system but the fans will not come on for 2-3 hrs after the initial
> > fail. The system without fans can only run for ~5 min before overheating
> > and shutting down again. Physically unplugging the power cord does not
> > affect this 2-3 hour time window. The server chassis has been replaced by
> > the vendor once. The server has been plugged into different outlets and
> > at different locations. We have already learned about the off by one bug
> > with acpi and are now passing the acpi=force kernel boot arguement. ACPI
> > is running, but the fans still stop and the system overheats. We have
> > been fighting this for about 6 weeks now. Any suggestions would be
> > appreciated. Please inform me if I have not provided enough information.
>
>
> Maybe I've misunderstand but if you have more than a single processor, I
> thought you must not use ACPI. Otherwise it may think, oh one of the
> processors is idle so I can power down... (and not realize your other
> processor is busy)
>
> However, this seems inconsistent with it not working when you then come
> back up.
>
> I guess we'd need to see your /var/log/syslog for more info...
actually, I think I was getting confused with APM not being thread safe
(and that the same is not true of ACPI)
--
Michael Bane
Atmospheric Physics Group
University of Manchester
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