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Date:      Sat, 9 Apr 2005 11:57:45 +0200
From:      Antoine Brodin <antoine.brodin@laposte.net>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        nate@root.org
Subject:   Re: Interrupt storm
Message-ID:  <20050409115745.31a0059c.antoine.brodin@laposte.net>
In-Reply-To: <200504081529.33026.jhb@FreeBSD.org>
References:  <b37cb09705032911295ce15f84@mail.gmail.com> <200504071607.47419.jhb@FreeBSD.org> <20050408141019.6cb045c1.antoine.brodin@laposte.net> <200504081529.33026.jhb@FreeBSD.org>

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John Baldwin <jhb@FreeBSD.org> wrote:
> I think your other link devices are meant to be used in APIC mode (note their 
> names start with 'A') and thus I think they are aliases for the other link 
> devices.  So when I turn off the alias, I turn off the non-APIC mode one as 
> well.  Working BIOSen handle this by having the same link device change its 
> behavior (different _PRS return values) depending on the PIC mode.  It's not 
> easy to determine if a link is just not used (for example, if no card is 
> plugged into a slot with a dedicated link) or if it's an alias.  I think 
> having two ACPI devices alias to the same hardware is a bug in the BIOS 
> though.  Perhaps your BIOS vendor can be convinced to fix this.  Can you see 
> if Linux has the same problem btw?

I've just sent a technical support request to ASUS. I'll let you know
when they reply.
Linux doesn't have the same problem: I tested with a knoppix live cd
yesterday.
dmesg: http://bsd.miki.eu.org/~antoine/knoppix36.dmesg , but it doesn't
look very helpful.

Cheers,

Antoine



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