Message-ID: <49C98280.4020402@diamondcut.com.br>
Date: Tue, 24 Mar 2009 22:01:52 -0300
From: "Renato S. Yamane" <yamane@diamondcut.com.br>
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To: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
CC: LKML <linux-kernel@vger.kernel.org>, jnelson@jamponi.net
Subject: Re: Thinkpad T61 - Fan running a lot of time
References: <49C94620.8040309@diamondcut.com.br> <20090324232328.GA23356@khazad-dum.debian.net>
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Henrique de Moraes Holschuh wrote:
> Renato S. Yamane wrote:
>> The fan speed is ~2600RPM (always under 3000RPM), and I think that is
>> not enough to cooling the processor, because is necessary 3min to
>> decrease 1?C in Core1 and only 40sec to increase 1?C.
>>
>> I think that is necessary a higher fan speed.
>
> Or a better thermal coupling between the fan assembly and the
> processor...  this is a weak area on thinkpads.
>
> If your box is still under warranty, I suggest you to use
> thinkpad-acpi fan control to keep your fan at level 7 (fastest normal
> fan level).  If that's not enough, call in for a motherboard
> replacement.

Updated BIOS to 7LETC5WW (2.25) and...

Fan speed is stabilished in ~3000RPM, temperature go to 42?C and fan 
speed still power-on.

# cat /proc/acpi/ibm/fan
status:         enabled
speed:          3028
level:          auto

# echo level 7 > /proc/acpi/ibm/fan
bash: echo: write error: Invalid argument

How can I change fan level?

Regards,
Renato
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