PE840 noisy back fan

[Peter]

The PE840 has only one PSU, and yes, the covers are all closed.

RB wrote:
> 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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>>     
>
>
>   


-- 
Peter Hardman
Breeder of Shetland sheep and cattle