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Re: CPU fans shut off by Debian?



Thanks again for your response.  Any other suggestions?  Our only current 
option remaining is to attempt to return the server and find another with 
different components that hopefully will not have the same problem.
	Thanks,
	Stephen Lokitz

On Fri, 8 Jul 2005, michael wrote:

> 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  The server chassis has been replaced by 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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