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Date:      Tue, 09 Jan 2001 20:43:20 +0100
From:      Bert Driehuis <bert_driehuis@nl.compuware.com>
To:        stable@freebsd.org
Subject:   Re: Intel PRO/100+ driver or hardware? (Update)
Message-ID:  <3A5B69D8.C46CE2D1@nl.compuware.com>
References:  <89010000.979063602@grolsch.ai>

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"Jeroen C. van Gelderen" wrote:

> My conclusion is that the Intel cards I have are broken. They refuse to
> work reliably in an otherwise healthy low-end network. I may have a bad
> batch or maybe these cards are broken by design.

It is possible your motherboard vendor screwed up:

	http://developer.intel.com/design/support/faq/82559.htm

Apparently, some motherboard vendors let boards go out with wrong wiring
or capacitors (see the bottom of the page), and the symptoms match yours
(which, I must stress, may very well be a coincidence).

It is no doubt an oversight that this info is on the web site, seeing
that the "errata" for the 8255x seem to be available under NDA only...
And those errata make the difference between a reliable and an
unreliable drivern (actually, I think the developers did have access to
the errata; I see a workaround for at least one known issue with the
82559 in the if_fxp.c source).

Incidentally, the 3Com 3C905TX is actually worse in this respect than
the Intel 100Pro.

Cheers,

				-- Bert

-- 
Bert Driehuis, MIS -- bert_driehuis@nl.compuware.com -- +31-20-3116119
Dihydrogen Monoxide kills! Join the campaign at http://www.dhmo.org/


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