From: Kyle Moffett <mrmacman_g4@mac.com>
To: lsorense@csclub.uwaterloo.ca (Lennart Sorensen)
Cc: Joshua Kwan <joshk@triplehelix.org>, linux-kernel@vger.kernel.org
Subject: Re: [?] PCI BIOS masks some IDs to prevent OS detection?
Date: Mon, 16 Jan 2006 11:15:12 -0500 [thread overview]
Message-ID: <631F1A6F-EA27-4CDC-8D23-C7C6467FB28B@mac.com> (raw)
In-Reply-To: <20060116155353.GC18972@csclub.uwaterloo.ca>
On Jan 16, 2006, at 10:53, Lennart Sorensen wrote:
> Maybe the raid card has a pin shorted to ground, so all reads of
> that bit read as 0. That would explain why all the cards lost the
> same bit. It appears to be the highest bit on the bus that is stuck
> low.
>
> I see this fairly frequently on our own mainboards due to a problem
> with the soldering of a surface mount pci bridge chip on the bottom
> of the board.
I've also seen this problem with a faulty case where a small metal
support shorted a couple pins on the PCI riser. It gave odd PCI ids,
corrupted data, and crashed within a minute of booting. After
removing the metal bracket, it's been stable for almost a year.
Cheers,
Kyle Moffett
--
I have yet to see any problem, however complicated, which, when you
looked at it in the right way, did not become still more complicated.
-- Poul Anderson
prev parent reply other threads:[~2006-01-16 16:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-13 22:45 Joshua Kwan
2006-01-14 0:31 ` Alan Cox
2006-01-14 19:12 ` Onur Küçük
2006-01-16 15:53 ` Lennart Sorensen
2006-01-16 16:15 ` Kyle Moffett [this message]
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