CPU Fan does not switch-off

[Fourat Zouari]

I recently switched from debian etch to ubuntu Edgy.
Everything seems to work perfectly fine (autodetect), except one problem.
My CPU fan, once it starts, does not switch-off.
The fan switches off fine in Windows-XP. Was wondering if anyone faced this
problem and could suggest solutions or debugging tips.

here's some helpfull informations :

# dpkg -l|grep acpi
ii  acpi                             0.09-1
displays information on ACPI devices
ii  acpi-support                     0.90                                 a
collection of useful events for acpi
ii  acpid                            1.0.4-5ubuntu4
Utilities for using ACPI power management
ii  acpitool                         0.4.4-1                              a
small, convenient command-line ACPI client

# ps -ax|grep acpi
Warning: bad ps syntax, perhaps a bogus '-'? See
http://procps.sf.net/faq.html
    9 ?        S<     0:00 [kacpid]
   10 ?        S<     0:00 [kacpi_notify]
 3653 ?        Ss     0:00 /usr/sbin/acpid -c /etc/acpi/events -s
/var/run/acpid.socket
 3944 ?        S      0:00 /usr/lib/hal/hald-addon-acpi
 5413 pts/1    S+     0:00 grep acpi

# cat /proc/acpi/fan/FAN/state
status:                  on

# cat /proc/acpi/thermal_zone/THRM/temperature
temperature:             30 C
# cat /proc/acpi/thermal_zone/THRM/trip_points
critical (S5):           79 C
# cat /proc/acpi/thermal_zone/THRM/state
state:                   ok
# cat /proc/acpi/thermal_zone/THRM/polling_frequency
<polling disabled>
# cat /proc/acpi/thermal_zone/THRM/cooling_mode
<setting not supported>
cooling mode:   critical
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20070209/f1f4cdad/attachment.html>