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 Forum index » Advanced Topics » Hardware
My CPU fan runs all the time in Linux
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chris062689

Joined: 18 Nov 2005
Posts: 17

PostPosted: Tue 18 Apr 2006, 13:48    Post subject:  My CPU fan runs all the time in Linux  

My CPU Fan constantly spins no matter what, it only does this in linux, any kind of linux, always happens.

I've tried EVERY kind of boot option imaginable, and it's beginning to urk me, because...

One) It could ruin my hard-drive and overload my PC
Two) It's annoying.

Would there be any way to regulate the fan to turn on ONLY when in the presence of heat?

Are any other people having this kind of problem?
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11068
Location: Arizona USA

PostPosted: Tue 18 Apr 2006, 16:49    Post subject:  

Other than discharge the battery (assuming you're talking about a laptop) and wear out the fan, it can't hurt your computer for the fan to run all the time. I will say that the inside of a computer gets full of dust when a fan blows air into it, so you might have to open it up more often to clean it out.

If I remember right, the problem of laptop fans running at full speed has come up several times in the forum. I think it has something to do with acpi, but don't quote me. Smile I don't know if it was resolved. Have you tried using the forum search?
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BlackAdder


Joined: 22 May 2005
Posts: 382

PostPosted: Tue 18 Apr 2006, 19:11    Post subject:  

Presumably your machine is a notebook/laptop.
There have been a couple of threads relating to ACPI. The latest is here, and is a good summary of how to get ACPI working with Puppy.
The steps described have been working for me, but ACPI has been described as having been designed by a bunch of monkeys on LSD, so this may not work for everyone.

HTH.
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chris062689

Joined: 18 Nov 2005
Posts: 17

PostPosted: Tue 18 Apr 2006, 19:29    Post subject:  

It's not a laptop.
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Flash
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PostPosted: Wed 19 Apr 2006, 00:14    Post subject:  

Then what is it?
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rarsa


Joined: 29 May 2005
Posts: 3053
Location: Kitchener, Ontario, Canada

PostPosted: Wed 19 Apr 2006, 10:15    Post subject:  

Some desktop motherboards come with windows drivers (or bios) to regulate the fan speed depending on temperature.

If your mother board depends on Windows drivers (as it is the case with some intel boards), you could go the motherboard's manuracturer web page and search for a linux daemon.

One thing is for sure: The fan spinning won't affect your HDD or overload the motherboard. Why would it do that? It's like saying that because your car radio is too loud your tires are gona get flat. (unless of course, your computer is sensitive to noise).

I agree that the fan noise is anoying.

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keenerd

Joined: 20 Aug 2005
Posts: 175

PostPosted: Wed 19 Apr 2006, 10:34    Post subject:  

He might mean his hard drive won't stop spinning, and is just calling disk noise "fan noise".


Chris,

If that is the case, you can make your hard drive (assuming it's /dev/hda) spin down with

hdparm -S12 /dev/hda

The number after S is the number of seconds, by fives. So 12 (times five) is sixty, or one minute.

You'll need to add that line to the end of /etc/rc.d/rc.local to make it permanent. Otherwise, it is forgotten on the next boot.
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GuestToo
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Joined: 04 May 2005
Posts: 4078

PostPosted: Wed 19 Apr 2006, 18:07    Post subject:  

some desktops use acpi ... mine does, for example
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chris062689

Joined: 18 Nov 2005
Posts: 17

PostPosted: Thu 20 Apr 2006, 13:47    Post subject:  

I know it's my cpu fan, because it's tacked onto my motherboard. I don't know why it keep s on spinning, but I still do not know how to solve this problem. I know it's my CPU fan. Since I opened it up and it's the fan right next to my motherboard. It does this in any other linuxes.

Is there any way I could pinpoint the problem?
(How do I turn the thing off, and only let it turn on when my computer gets hot? Since I know in windows, the fan used to get louder (means it's running faster?) when the computer got hot.

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Windows XP Home
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Free Puppy from it's many useless programs!
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MU


Joined: 24 Aug 2005
Posts: 13642
Location: Karlsruhe, Germany

PostPosted: Thu 20 Apr 2006, 14:03    Post subject:  

There is a Intel speedstep utility for Linux, to control CPU-speed, Fan and more.
But it is just supported by Kernel 2.6.
So you had to try the K26-Kernel, which is currently only available for Puppy 107: http://dotpups.de/puppy-releases/1.0.7/

There might be a Pupp2-K26 -Iso in the next days, as Barry currently tests it.

I don't know, if speedstep runs by default, or needs a module, so you had to google for that.

Mark
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rarsa


Joined: 29 May 2005
Posts: 3053
Location: Kitchener, Ontario, Canada

PostPosted: Thu 20 Apr 2006, 16:35    Post subject:  

Quote:
How do I turn the thing off, and only let it turn on when my computer gets hot?
Did you even read my post where I sugest going to your MotherBoard manufacturer website?
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Sage

Joined: 04 Oct 2005
Posts: 4784
Location: GB

PostPosted: Fri 21 Apr 2006, 02:09    Post subject:  

Is this thread a wind-up? Does the chipset have a fan, too?
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