PE840 noisy back fan

[RB]

Two quick checks - if the system has redundant power, are both units
plugged in?  Is the system's case fully closed?

If everything else is cleared, those two conditions I've found most
often to be the cause of over-speed fans.

On 1/5/08, Peter <peter at ssbg.zetnet.co.uk> wrote:
> I've just taken delivery of a PE840 with the E2160 dual-core processor.
>  It's all fine, except that the back fan is seriously noisy, and I've
> not been able to find any way of
> slowing it down.
> I'm running Ubuntu 7.10, but I don't believe the fan is under the
> control of the OS in any case.
>
> I've run the OpenManage from the CentOS live CD (OM 5.1) but that
> doesn't seem to do anything except
> report the status. Same with IPMI which I can run from Ubuntu. Both
> agree that the fan is running at around
> 1800rpm vs the low threshold of 912 and a nominal of 988 (where I would
> expect it to be).
> The planar temp is reported at 25 degrees, and the
> Linux coretemp module reports the core temps as 30 and 31 degrees. The
> room temp is 20 degrees.
> These temps seem to indicate the fan is running unnecessarily fast - and
> noisily more to the point
>
> Interestingly IPMI has no processor temperature - the entity '3.1
> Processor' has a temp of -62 degrees!
>
> Have I got a BMC that's configured for a different processor?
>
> Is there any way of adjusting the fan speed in the BMC (which is what I
> assume is controlling it?).
>
> --
> Peter Hardman
> Breeder of Shetland sheep and cattle
>
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