linux-kernel - Re: High cpu temperature with 2.6.32, bisection shows commit 69d258 (fwd)

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Date:	Wed, 10 Feb 2010 23:42:40 +0200 (EET)
From:	Dimitrios Apostolou <jimis@....net>
To:	Arjan van de Ven <arjan@...radead.org>
cc:	Wojciech Ploskonka <wploskonka@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alex Chiang <achiang@...com>, Len Brown <lenb@...nel.org>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Yinghai Lu <yinghai@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: High cpu temperature with 2.6.32, bisection shows commit 69d258
 (fwd)

On Wed, 10 Feb 2010, Dimitrios Apostolou wrote:
> Hi Arjan,

I have also added Wojo, the user that had the problem, to the CC list so 
you can ask him any details you might need.


Dimitris


>
> it seems that the changes inside processor module have bitten another user, 
> see relevant thread at archlinux bugtracker:
> http://bugs.archlinux.org/task/17771
>
> It can be summarised with the following quote:
>
>
> I've tested jimis's suggestion about booting with init=/bin/sh and later 
> modprobing next modules.
> I confirm that module called "processor" in any kernel26 2.6.32.* is a root 
> problem of high power consumption.
> Here's output of modprobing it:
>
> ACPI: SSDT 000000003f6d94fb 00238 (v01 PmRef Cpu0Ist 000003000 INTL 20050624)
> ACPI: SSDT 000000003f6d8e8c 005EA (v01 PmRef Cpu0Cst 000003001 INTL 20050624)
> Marking TSC unstable due to TSC halts in idle
> processor LNXCPU:00: registered as cooling_device0
> ACPI: SSDT 000000003f6d9733 000C8(v01 PmRef Cpu1Ist 000003000 INTL 20050624)
> ACPI: SSDT 00000000376d9476 00085 (v01 PmRef Cpu1Cst 000003000 INTL 20050624)
> Swtiching to clocksource hpet
> processor LNXCPU:01: registered as cooling_device1
>
>
>
> As I understand, in his case the C3 state is unstable and exits immediately. 
> I have asked him to post the dmidecode output so you can put him on the 
> exception list too. However I now believe that more and more users will be 
> facing the same problem, it's not something you find easily, especially on 
> desktop machines! What do you think?
>
>
> Thanks,
> Dimitris
>
>
>
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