Re: IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH] for idle=C1halt, 2.6.5

From: Len Brown (len.brown_at_intel.com)
Date: 04/27/04

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    To: a.verweij@student.tudelft.nl
Date:	27 Apr 2004 14:00:54 -0400

    On Tue, 2004-04-27 at 13:02, Arjen Verweij wrote:

    > After having his box run with cat /dev/hda > /dev/null for a night
    > straight no lockup has occured. The brand of his motherboard is Shuttle.

    My shuttle is a FN41 board in a SN41G2 system.

    I found "rev 1.0" BIOS (FN41S00X of 12/18/2002) on Shuttle's ftp site
    and downgraded to that, but still no hang.

    It may be this board never hangs no matter what,
    or perhaps C1 disconnect was simply disabled in that BIOS
    b/c there was no option for it in Advanced Chipset Features
    like there is for the most recent BIOS.

    Other things about my board.
    I run "optimized defaults", I don't overclock anything.
    Processor is an AMD XP 2200+
    Does anybody else see the hang with this processor model?
    I wonder if the hang is processor model or speed dependent?

    > Does anyone have some input on how to tackle this problem?

    Unfortunately I don't have tools for debugging nvidia + amd hardware.
    I would expect that those companies do, however. So encouraging them
    to reproduce the hang internally may be the best way to go.

    > buy Len the cheapest broken nforce2 board I can find at pricewatch.com and
    > have it shipped to his house :)

    I got tangled in this b/c this board (actually, the reference BIOS for
    this chipset) had some unusual ACPI related failures. If the failures
    turn out to be related to ACPI, I'll do what I can to help. But I
    expect that hardware debugging tools may be necessary before the
    hang issue is completely explained and solved.

    -Len

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