From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
To: "Renato S. Yamane" <yamane@diamondcut.com.br>
Cc: LKML <linux-kernel@vger.kernel.org>, jnelson@jamponi.net
Subject: Re: Thinkpad T61 - Fan running a lot of time
Date: Tue, 24 Mar 2009 22:29:25 -0300 [thread overview]
Message-ID: <20090325012925.GA30554@khazad-dum.debian.net> (raw)
In-Reply-To: <49C98280.4020402@diamondcut.com.br>
On Tue, 24 Mar 2009, Renato S. Yamane wrote:
> # echo level 7 > /proc/acpi/ibm/fan
> bash: echo: write error: Invalid argument
>
> How can I change fan level?
Read the driver documentation, at Documentation/laptops/thinkpad-acpi.txt.
Fan control is locked by default, for hardware safety reasons. The docs
tell you why, how to use the fan control interface, and how to unlock it.
Also, I suggest you get used to the hwmon fan control interface on /sys,
procfs is going away sooner or later...
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
prev parent reply other threads:[~2009-03-25 1:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-24 20:44 Thinkpad T61 - Fan running a lot of time Renato S. Yamane
2009-03-24 23:23 ` Henrique de Moraes Holschuh
2009-03-25 1:01 ` Renato S. Yamane
2009-03-25 1:29 ` Henrique de Moraes Holschuh [this message]
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