From: Bruno Ducrot <ducrot@poupinou.org>
To: Saurabh Nanda <saurabhnanda@gmail.com>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Laptop fan on Acer 4061NWLCi
Date: Mon, 3 Apr 2006 15:41:38 +0200 [thread overview]
Message-ID: <20060403134138.GA13970@poupinou.org> (raw)
In-Reply-To: <794f042d0604030408k3073a44dg70255e3342f4a2db@mail.gmail.com>
On Mon, Apr 03, 2006 at 04:38:06PM +0530, Saurabh Nanda wrote:
> Hi,
>
> I have recently bought an Acer 4061NWLCi laptop and am having trouble
> getting ACPI to work. I hope somoene will help me out :-)
>
> I am running Ubuntu Linux -- Breezy Badger 5.10. With the default
> Ubuntu kernel (2.6.12) ACPI did not work at all. I did not even get
> the battery status in GNOME. Then I installed the latest kernel (
> 2.6.16.1) and ACPI started working - at least partially! I could check
> my CPU temperature, AC adapter status, and battery status.
>
> The only thing not working is the CPU fan. I tried reading through my
> current(broken) DSDT and surprisingly there is no mention of a fan
> anywhere! In the Thermal Zone configuration there is no mention of
> _ACx (_AC0, _AC1, etc.) as well. I can post my DSDT to the list if it
> would help.
>
> Can anyone please help me in fixing this? Running my laptop without a
> fan is pretty dangerous as the CPU temperatures crosses 65 degrees
> celcius at times.
>
> Can I declare a fan and an active cooling temperature point in the
> DSDT, recompile it and hope that it would work? Has anyone else done
> this kind of a thing before?
Yes, only problem is to define _ON and _OFF methods in order to control
the fan device. Good luck...
With my own laptop (Acer TM 4102WLMi) I can only get the fan speed,
but that's all. I think it's possible to write some
different thresholds in order to control the cpu fan, but I don't
see why this is needed (after all 65 degree celcius should be ok for
a pentium-m). In the case of my Acer, the fan speed is available
at 0x5d, 0x5c on the EC space and I think there are some more Acer
models that define those.
Cheers,
--
Bruno Ducrot
-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.
next prev parent reply other threads:[~2006-04-03 13:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-03 11:08 Laptop fan on Acer 4061NWLCi Saurabh Nanda
2006-04-03 13:41 ` Bruno Ducrot [this message]
2006-04-03 15:56 ` Saurabh Nanda
2006-04-03 16:45 ` Bruno Ducrot
-- strict thread matches above, loose matches on Subject: below --
2006-04-03 15:31 Karasyov, Konstantin A
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060403134138.GA13970@poupinou.org \
--to=ducrot@poupinou.org \
--cc=linux-acpi@vger.kernel.org \
--cc=saurabhnanda@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.