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

From: Dimitrios Apostolou
Date: Wed Feb 10 2010 - 16:39:18 EST


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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