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List Archive: gentoo-laptop
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To: gentoo-laptop@g.o
From: "Francisco Figueiredo Jr." <fxjrlists@...>
Subject: Re: How to turn off cpu fan when I turn on my laptop?
Date: Mon, 08 Nov 2004 21:19:12 -0200
Pavel Riha wrote:
> On Tue, Nov 02, 2004 at 12:15:44PM -0200, Francisco Figueiredo Jr. wrote:
> 
>>I'm facing a little issue with my laptop and cpu fan.
>>
>>... 
>>
>>Kernel only turns off my cpu fan after the temperature passes the 48C 
>>and come back to 42, 43. And turns it on again when it reaches the 51C.
>>
>>When I reach this level, it is ok. Kernel works as expected turning the 
>>fan on and off. The problem is before reaching this level, the fan 
>>doesn't turn off.
>>
>>I'd like to know if there is something I could do to tell kernel to turn 
>>off my fan if temperature is below 42C for example, even after a fresh 
>>boot, when temperature starts with 35C.
> 
> 
> hmm ... are you sure, that the kernel even CAN stop the fan?
> I thing that no :(
> 
> I thing it's the bios(?) work or so.
> 


Hi Pavel,

Hmmm, strange, I thought kernel could do it.

I mean, when this laptop had Win Xp, as soon as the OS come up, the 
cooler stopped.

When I installed Gnu/Linux it keeps the cooler on. I thought it could be 
somehow managed by kernel because I saw somethings about thermal_trips 
points which would allow me to say what to do , turn cooling active mode 
on and off, based on the current temp of system.

The problem is only that when I turn my computer on, kernel, or maybe 
acpi doesn't check that and the cooler keeps on.

Regards,

Francisco Figueiredo Jr.

--
gentoo-laptop@g.o mailing list

References:
How to turn off cpu fan when I turn on my laptop?
-- Francisco Figueiredo Jr.
Re: How to turn off cpu fan when I turn on my laptop?
-- Pavel Riha
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Updated Jun 17, 2009

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