Linux-kernel mailing list archive 2000-32,: Re: Adaptec 2930U2 problem followup

# Re: Adaptec 2930U2 problem followup

Rogier Wolff (R.E.Wolff@BitWizard.nl)
Mon, 7 Aug 2000 20:18:16 +0200 (MEST)

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Doug Ledford wrote:
> Bob_Tracy wrote:
> >
> > Been having problems with an Adaptec 2930U2 card in my machine at
> > the house. Naturally, it works fine with Win95. The problem has
> > been shown to be something peculiar to my motherboard after looking
> > at many test scenarios over the past several days. Basically,
> > there's no interrupt activity corresponding to the 2930U2 that
> > either Linux or FreeBSD can see. This results in an infinite
> > timeout/reset loop during driver initialization.
>
> This is usually only a problem on SMP motherboards. In that case, I tell
> people to boot the kernel with the option noapic and see if it helps the
> problem. In any case, linux isn't reading your IRQ routing information
> properly either due to a linux bug or a buggy BIOS. You could bring this
> problem up to Ingo Molnar if this is an SMP motherboard *and* noapic helps, or
> bring it up to Martin Mares otherwise since it would likely be a PCI problem.

Doug,

If it's the IRQ routing stuff, then the symptoms would be consistent
with: "But 2.0 worked just fine on this machine", right?

I have a client with exaclty the same problem, and the "but 2.0 works"
hint. (IBM machine by the way.)

Roger.

    --
    ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 **
    *-- BitWizard writes Linux device drivers for any device you may have! --*
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    ******  prejudices acquired by age eighteen.   -- Albert Einstein ********

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