linux-kernel - Re: linux-next: Tree for June 13: IO APIC breakage on HP nx6325

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Message-ID: <20080620115714.GC8637@srcf.ucam.org>
Date:	Fri, 20 Jun 2008 12:57:14 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	Ingo Molnar <mingo@...e.hu>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Len Brown <lenb@...nel.org>
Subject: Re: linux-next: Tree for June 13: IO APIC breakage on HP nx6325

On Fri, Jun 20, 2008 at 01:53:58PM +0200, Rafael J. Wysocki wrote:

> What exactly I observe is that in this case:
> 1) The cooling fan is 100% on, as though the box were overheating, which seems
>    to indicate some serious confusion of the platform (the mechanism turning
>    the fan 100% on is supposed to be transparent to software).
> 2) Everything seems to slow down substantially, at least as soon as X is
>    started.

What does ACPI claim the trip points are set to in this case? On the 
6125, if IRQ 2 is enabled in the APIC then the DSDT sets all the thermal 
trip points to 16 degrees C. I suspect this means that enabling IRQ 2 is 
the wrong thing to do on this chipset.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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