fan & thermal

fan & thermal

[Nicolas Sabouret]

Hi,

Please excuse me if this question has already been raised but I couldn't 
find an answer in the archive.

I have a compaq laptop with ACPI running Debian with acpid and acpi 
installed. My problem is that the fan is always on (whereas it is mostly 
silent when running on windows).

I looked in the doc and I don't understand why I am on active cooling 
whereas the temperature is below the trip point:
$ cat trip_points
critical (S5):           96 C
passive:                 90 C: tc1=4 tc2=3 tsp=40 devices=0xcbf6e6e8
$ cat temperature
temperature:             49 C

Note that I do not have an "active" trip point defined. Also note that 
/proc/acpi/fan is empty.

Thanks in advance for your help,
	Nico.

PS: Please CC me in your answer.
-- 
Nicolas SABOURET
Laboratoire d'Informatique de Paris 6 (LIP6)
8, rue du Capitaine Scott, 75015 Paris, France
http://www-poleia.lip6.fr/~sabouret


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RE: fan & thermal

[Wang, Zhenyu Z]

It is like IBM Thinkpad R51.
No active cooling, No fan device. ACPI fan driver can't handle it.
Try to use acpi_os_name="Microsoft Windows NT" as kernel boot option to
see if that helps.

-zhen

-----Original Message-----
From: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org [mailto:acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Nicolas Sabouret
Sent: 2004年9月3日 15:35
To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: [ACPI] fan & thermal

Hi,

Please excuse me if this question has already been raised but I couldn't 
find an answer in the archive.

I have a compaq laptop with ACPI running Debian with acpid and acpi 
installed. My problem is that the fan is always on (whereas it is mostly 
silent when running on windows).

I looked in the doc and I don't understand why I am on active cooling 
whereas the temperature is below the trip point:
$ cat trip_points
critical (S5):           96 C
passive:                 90 C: tc1=4 tc2=3 tsp=40 devices=0xcbf6e6e8
$ cat temperature
temperature:             49 C

Note that I do not have an "active" trip point defined. Also note that 
/proc/acpi/fan is empty.

Thanks in advance for your help,
	Nico.

PS: Please CC me in your answer.
-- 
Nicolas SABOURET
Laboratoire d'Informatique de Paris 6 (LIP6)
8, rue du Capitaine Scott, 75015 Paris, France
http://www-poleia.lip6.fr/~sabouret


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Re: fan & thermal

[Nicolas Sabouret]

Wang, Zhenyu Z a écrit :
> It is like IBM Thinkpad R51.
> No active cooling, No fan device. ACPI fan driver can't handle it.
> Try to use acpi_os_name="Microsoft Windows NT" as kernel boot option to
> see if that helps.

I tried. It does not change anything (the fan stays on).

Nico.
-- 
Nicolas SABOURET
Laboratoire d'Informatique de Paris 6 (LIP6)
8, rue du Capitaine Scott, 75015 Paris, France
http://www-poleia.lip6.fr/~sabouret


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