I had similar problems with a newly acquired system, and managed to
isolate the onboard Intel EtherExpress Pro as being the culprit in my
case. Using a different NIC worked much, much better. My system also had
an Adpatec 78XX adpater (not onboard). I tried both 3Com 3C905 and
Asante PCI 10/100 NICs and both seemed to work flawlessly, without any
previous system lockups.

"Jason A. Diegmueller" wrote:

> It is a dual-processored machine (capable of 4, only utilizing
> two PPro 200's at this time, 512k cache each), so I have
> SMP compiled it.  So at the current time, it basically is:
>  linux-2.2.11-SMP with raid0145-990824 with four 2gb drives
>  in a RAID-5.  The SCSI bus is onboard Adaptec 78xx.  The
>  network card is an Intel Etherexpress PRO.
> 
> The problem?  It locks up.  Solid.  I've never in my life
> seen a Linux box just lock up, with no hints anywhere in
> logfiles.  On the other hand, I've never gotten my hands on
> hardware this "big" (This sucker was $31k retail when they
> bought it).  The machine is currently virutally unused (other
> then qpopper for POP mail); SAMBA is setup on it, but is
> currently completely unutilized at this time.
> 
> It seems to lock hard every few days.  Maybe 3 or 4?  I see
> no coorelation of activity (ie, users doing something) and
> lockups, but am willing to dig a little deeper if someone has
> an idea.
> 
> I was wondering two things:
>  A. Are there any known incompatibilities with any of this
>     hardware?  I've seen some mentions of aix78xx, SMP, and
>     raid causing problem.  Is this what I'm bumping in to?
>  B. Is there anything I can do to figure out WHAT is causing
>     the hard lockups?  Again, no hints in /var/log/messages or
>     anywhere else.  Possibly a serial cable to a dumb terminal
>     constantly dumping system information?
> 
> Any information or clues would be more then appreciated.  Replies
> directly to the list are more then fine; I subscribe to both.
> 
> Thanks.
> 
> ::: Jason A. Diegmueller
> ::: Microsoft Certified Systems Engineer
> ::: 513/542-1500 WORK  //  [EMAIL PROTECTED]
> ::: Systems Administrator, Bertke Systems Innovations
> -====---====---====---====---====---====---====---====---====---====---====-
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-- 
Michael Sloan
The Printing House, Ltd.
[EMAIL PROTECTED]

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