1435 fan issue

Mark Watts m.watts at eris.qinetiq.com
Wed Apr 18 08:17:24 CDT 2007

> Hi there.
> Apologies if this isn't quite the correct mailing list, but this does
> relate to /trying/ to install Linux on a Poweredge server :-)
> I have a dual-processor 1435 with 2GB RAM (4x512). For reasons not
> worth going into, I wish to "downgrade" this to a uni-processor
> machine with 1GB RAM.
> So I removed the second processor and 2x512 sticks, and the machine
> boots up. The setup menu all seems fine, and reports a single
> processor and 1GB RAM.
> However, I get diagnostic lights 1,2 and 3 lit up, but 4 not - which
> means "other error".
> And most importantly, the fans are going mental! Whereas they usually
> start up at high RPM then run down, in this configuration they start
> up high, run down, then very quickly go high again and stay like that.
> As soon as I put the second processor back (and the extra RAM as 2
> processors require 2GB RAM) everything goes back to normal.
> Can anyone think what may be wrong?
> Do you need to install a "blanking plate" over the LGA connector when
> a processor is removed? That's all I can think of.
> Any tips on what may be wrong will be greatly appreciated!
> Thanks very much.
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Look on the inside of the lid you removed - that may offer some clues...

Mark Watts BSc RHCE MBCS
Senior Systems Engineer
QinetiQ Trusted Information Management
Trusted Solutions and Services Group
GPG Key: http://keyserver.veridis.com:11371/search?q=0x455420ED
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