[ltp] Fan Setup

[Lior Uzan]

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What's the "watchdog" function?

On Tue, Feb 26, 2008 at 1:41 PM, Nils Faerber <
nils.faerber@kernelconcepts.de> wrote:

> Lior Uzan schrieb:
> > Hey all,
> > I have a T61. How do i keep the fan running all the time instead of only
> > when my pc passes a certain temp? (I don't remember if it was 50 or 52
> > celsius)
> > I don't like my CPU's temperature spiking whenever there's heavy load...
> > I passed the thinkpad_acpi driver the control_fan=1 option, now what?
>
> Look into /proc/acpi/ibm and do e.g.
>        cat fan
>
> You can set the level then (like on. off. auto), like
>        echo "level 0" > fan
> or
>        echo "auto" > fan
> or
>        echo "level 1" > fan
>        (lowest speed)
>
> But be careful. If you manually set the level then the auto function is
> disabled, i.e. if you set it to the lowest speed it will stay there
> regardless of how hot your CPU gets.
>
> > Alternately, how do i lower the temperature that the fan starts at?
>
> Pitily those AFAIK cannot be controled.
>
> Cheers
>  nils faerber
>
> --
> kernel concepts GbR        Tel: +49-271-771091-12
> Sieghuetter Hauptweg 48    Fax: +49-271-771091-19
> D-57072 Siegen             Mob: +49-176-21024535
> --
> --
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>

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What&#39;s the &quot;watchdog&quot; function?<br><br><div class="gmail_quote">On Tue, Feb 26, 2008 at 1:41 PM, Nils Faerber &lt;<a href="mailto:nils.faerber@kernelconcepts.de">nils.faerber@kernelconcepts.de</a>&gt; wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Lior Uzan schrieb:<br>
<div class="Ih2E3d">&gt; Hey all,<br>
&gt; I have a T61. How do i keep the fan running all the time instead of only<br>
&gt; when my pc passes a certain temp? (I don&#39;t remember if it was 50 or 52<br>
&gt; celsius)<br>
&gt; I don&#39;t like my CPU&#39;s temperature spiking whenever there&#39;s heavy load...<br>
&gt; I passed the thinkpad_acpi driver the control_fan=1 option, now what?<br>
<br>
</div>Look into /proc/acpi/ibm and do e.g.<br>
 &nbsp; &nbsp; &nbsp; &nbsp;cat fan<br>
<br>
You can set the level then (like on. off. auto), like<br>
 &nbsp; &nbsp; &nbsp; &nbsp;echo &quot;level 0&quot; &gt; fan<br>
or<br>
 &nbsp; &nbsp; &nbsp; &nbsp;echo &quot;auto&quot; &gt; fan<br>
or<br>
 &nbsp; &nbsp; &nbsp; &nbsp;echo &quot;level 1&quot; &gt; fan<br>
 &nbsp; &nbsp; &nbsp; &nbsp;(lowest speed)<br>
<br>
But be careful. If you manually set the level then the auto function is<br>
disabled, i.e. if you set it to the lowest speed it will stay there<br>
regardless of how hot your CPU gets.<br>
<div class="Ih2E3d"><br>
&gt; Alternately, how do i lower the temperature that the fan starts at?<br>
<br>
</div>Pitily those AFAIK cannot be controled.<br>
<br>
Cheers<br>
 &nbsp;nils faerber<br>
<br>
--<br>
kernel concepts GbR &nbsp; &nbsp; &nbsp; &nbsp;Tel: +49-271-771091-12<br>
Sieghuetter Hauptweg 48 &nbsp; &nbsp;Fax: +49-271-771091-19<br>
D-57072 Siegen &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mob: +49-176-21024535<br>
--<br>
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The linux-thinkpad mailing list home page is at:<br>
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</font></blockquote></div><br>

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