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

I don't think that the CPU model has much to do with anything, it is
pretty much chipset related. My last remark about buying you a mobo for
debugging purposes was a vain attempt at humor.

I'm just surprised of the lack of support the vendors and NVIDIA/AMD are
giving. I realise that Linux may be only a marginal part of the market for
those companies so it is not commercially justifiable to invest a lot of
time in this.

We all appreciate whatever input you may have, because a solution without
indepth knowledge of how ACPI/APIC code handles stuff is probably needed
to tackle this issue.

All I can do is gather info, and I'm currently thinking of a plan to get
the info we need.



On 27 Apr 2004, Len Brown wrote:

> 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 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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