Re: Ubuntu overheating since 11.10 for a lot of thinkpad computers

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On 05/28/2012 05:25 PM, Ted Ts'o wrote:
> On Mon, May 28, 2012 at 12:54:38PM +0200, Julien Iguchi-Cartigny wrote:
>> Let's do a more useful correct bug report.
>>
>> Note that i'm not sure it is related with thinpad_acpi but since i've
>> no clues....
>>
>> My system is Thinkpad T500 with ubuntu 12.04 (3.2.0-24-generic-pae).
>>
>> Since ubuntu 11.10, I've noticed that my computer reboots when high
>> CPU charge due to excessive heat (more than 100°).
> 
> What is your CPU and graphics chipset are you using?  

$ cat /proc/cpuinfo

model name	: Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz
model name	: Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz

(dual core...)

$ lspci | grep Graphics

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series
Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)


I think it is Intel Chipsets

[snip]

> 
> So at least for me, it's a hardware problem,... 
>

I'm not sure of this:
- it starts around the kernel 3.0, before this everything was fine (and
I was using this computer since 1 year and half).
- the rather high level of Turbo mode seems strange (around 20-25% when
idle...)
- the presence of a similar bug in the "classical" acpi linux driver

> [snip]
> 
> My suggestion for people who are trying to work on this issue is that
> they specify things like what graphics chipset and CPU they are using,
>
> [snip]

The best way maybe to launch such investigation in the launchpad bug
report (which has the advantage to have a lot of people with a similar
problem).

Does anyone what are the most valuable informations to trace the problem
for developpers ?
- computer, cpu and graphic chipsets
- the turbo mode percentage
- ???

Thank you for your help.

Regards.

Julien

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