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Old 01-07-2010, 02:08 PM
George
 
Default CPU fan working more than it should

On 1/7/10, Arthur Machlas <arthur.machlas@gmail.com> wrote:
> On Thu, Jan 7, 2010 at 8:50 AM, George <pinkisntwell@gmail.com> wrote:
>
>> I just installed Debian on my laptop and I notice that the CPU fan is
>> working much more than it used to work on windows. It must be that
>> Debian changed the temperature threshold. How can I change it back?
>
>
> My guess is that you haven't enabled frequency scaling, so your cpu is
> running at full throttle non-stop.
>

Performance Monitor says it isn't. But what's frequency scaling?


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Old 01-07-2010, 02:41 PM
George
 
Default CPU fan working more than it should

On 1/7/10, George <pinkisntwell@gmail.com> wrote:
> On 1/7/10, Arthur Machlas <arthur.machlas@gmail.com> wrote:
>> On Thu, Jan 7, 2010 at 8:50 AM, George <pinkisntwell@gmail.com> wrote:
>>
>>> I just installed Debian on my laptop and I notice that the CPU fan is
>>> working much more than it used to work on windows. It must be that
>>> Debian changed the temperature threshold. How can I change it back?
>>
>>
>> My guess is that you haven't enabled frequency scaling, so your cpu is
>> running at full throttle non-stop.
>>
>
> Performance Monitor says it isn't. But what's frequency scaling?

I just noticed that a process named "events/0" is taking up between
10-14%. Is that normal? It's annoying.


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Old 01-08-2010, 12:59 AM
Olaf Reitmaier Veracierta
 
Default CPU fan working more than it should

On 07/01/10 10:38, George wrote:


Performance Monitor says it isn't. But what's frequency scaling?



http://en.wikipedia.org/wiki/Frequency_scaling

How to configure an use it? (See the modules way for Debian)

http://www.thinkwiki.org/wiki/How_to_make_use_of_Dynamic_Frequency_Scaling

--
----------------------------------------------------------------------
"You don't know where your shadow will fall",
Somebody.-
----------------------------------------------------------------------
Ing. Olaf Reitmaier Veracierta<olafrv@gmail.com>
----------------------------------------------------------------------
Personal Web Page -- http://olafrv.googlepages.com
----------------------------------------------------------------------


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Old 01-08-2010, 01:14 AM
George
 
Default CPU fan working more than it should

On Fri, Jan 8, 2010 at 1:59 AM, Olaf Reitmaier Veracierta
<olafrv@gmail.com> wrote:

> http://en.wikipedia.org/wiki/Frequency_scaling
>
> How to configure an use it? (See the modules way for Debian)
>
> http://www.thinkwiki.org/wiki/How_to_make_use_of_Dynamic_Frequency_Scaling

I have an AMD Sempron, so it looks like my processor is not supported.


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Old 01-08-2010, 02:08 AM
Olaf Reitmaier Veracierta
 
Default CPU fan working more than it should

On 07/01/10 21:44, George wrote:

On Fri, Jan 8, 2010 at 1:59 AM, Olaf Reitmaier Veracierta
<olafrv@gmail.com> wrote:



http://en.wikipedia.org/wiki/Frequency_scaling

How to configure an use it? (See the modules way for Debian)

http://www.thinkwiki.org/wiki/How_to_make_use_of_Dynamic_Frequency_Scaling



I have an AMD Sempron, so it looks like my processor is not supported.





Uhm, I think you can, try to load this modules:


AMD Sempron/Athlon/MP ( K7 ). The module to load
is powernow-k7
AMD Duron/Sempron/Athlon/Opteron 64/Turion ( K8 ).
The module to load is powernow-k8
Other (Unknown). Try the module acpi-cpufreq

See and practice your spanish here:
http://www.esdebian.org/wiki/cpu-scaling-debian



--
----------------------------------------------------------------------
"You don't know where your shadow will fall",
Somebody.-
----------------------------------------------------------------------
Ing. Olaf Reitmaier Veracierta <olafrv@gmail.com>
----------------------------------------------------------------------
Personal Web Page -- http://olafrv.googlepages.com
----------------------------------------------------------------------
 
Old 01-08-2010, 08:42 AM
Klistvud
 
Default CPU fan working more than it should

Dne, 07. 01. 2010 16:08:40 je George napisal(a):

On 1/7/10, Arthur Machlas <arthur.machlas@gmail.com> wrote:
> On Thu, Jan 7, 2010 at 8:50 AM, George <pinkisntwell@gmail.com>
wrote:

>
>> I just installed Debian on my laptop and I notice that the CPU fan
is

>> working much more than it used to work on windows. It must be that
>> Debian changed the temperature threshold. How can I change it back?


Apparently, ACPI implementations in laptops are buggy (or let's say
non-standardized) more often than not. I suspect M$ must have several
workarounds in place in order to run -- at least in general -- cooler
and more power-savvy than GNU/Linux. These workarounds may well be
industry secrets between M$ and the laptop vendors for all we know ...
You may read a write up on my humble experience with a heated, noisy,
jumpy laptop (gosh, sounds like my wife), by hopping over to the link
provided at the end of my post; just look for the heading "Laptops in
Heat". There you'll find more about ACPI, the thermal kernel module,
the trip points and related stuff, and also some relevant links for
further reading.


--
Regards,

Klistvud
Certifiable Loonix User #481801
http://bufferoverflow.tiddlyspot.com


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Old 01-08-2010, 04:25 PM
Arthur Machlas
 
Default CPU fan working more than it should

On Fri, Jan 8, 2010 at 3:42 AM, Klistvud <quotations@aliceadsl.fr> wrote:

Dne, 07. 01. 2010 16:08:40 je George napisal(a):


On 1/7/10, Arthur Machlas <arthur.machlas@gmail.com> wrote:

> On Thu, Jan 7, 2010 at 8:50 AM, George <pinkisntwell@gmail.com> wrote:
>
>> I just installed Debian on my laptop and I notice that the CPU fan is

>> working much more than it used to work on windows. It must be that
>> Debian changed the temperature threshold. How can I change it back?

Apparently, ACPI implementations in laptops are buggy (or let's say non-standardized) more often than not. I suspect M$ must have several workarounds in place in order to run -- at least in general -- cooler and more power-savvy than GNU/Linux. These workarounds may well be industry secrets between M$ and the laptop vendors for all we know ... You may read a write up on my humble experience with a heated, noisy, jumpy laptop (gosh, sounds like my wife), by hopping over to the link provided at the end of my post; just look for the heading "Laptops in Heat". There you'll find more about ACPI, the thermal kernel module, the trip points and related stuff, and also some relevant links for further reading.


--
Regards,

Klistvud
Certifiable Loonix User #481801
http://bufferoverflow.tiddlyspot.com

In addition to the info above, I use the PHC patch to allow undervolting of the CPU, or in my case CPUs. Without it on a default kernel my fan kicks in every 30 seconds or so. With it it doesn't kick in at all unless I do something like render video or compile a kernel. Haven't bothered to check the temp differences or do any real benchmarking.

*
Best,
Arthur
 

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