Re: PROBLEM: CPU fan shuts down on load of fan.ko in kernel 2.6.18 and later

Salatiel Filho
2007-01-10T03:18:46Z

On 1/9/07, Karasyov, Konstantin A <konstantin.a.karasyov@intel.com> wrote:
> Hi Matthew,
>
> Could you please perform the following testing:

Well , i tried to perform this steps in my machine since i think my
fans are not working in linux. Well , for my surprise , i have
absolutely nothing in

# ls -lh /proc/acpi/fan/
total 0

>
> 1. boot, make sure the fan doesn't spin.
>
> 2. do 'cat /proc/acpi/thermal/*/*', check the following:
> - the 'state' field shows 'active[<smthng>]'
> (if not - perform some CPU-intensive task);
> - fan still doesn't spin,

#cat /proc/acpi/thermal/*/*
cat: /proc/acpi/thermal/*/*: No such file or directory

#cat /proc/acpi/thermal_zone/*/*
<setting not supported>
cooling mode: critical
<polling disabled>
state: ok
temperature: 60 C
critical (S5): 99 C
<setting not supported>
cooling mode: critical
<polling disabled>
state: ok
temperature: 27 C
critical (S5): 105 C

>
> 3. do 'cat /proc/acpi/fan/*/state', check the following:
> - the 'status' field shows 'on' (at least one of them);
> - fan still doesn't spin,
>

# cat /proc/acpi/fan/*/state
cat: /proc/acpi/fan/*/state: No such file or directory

> 4a. do consequently (as root) the following:
> - 'echo 3 > /proc/acpi/fan/*/state'
> - 'echo 0 > /proc/acpi/fan/*/state'
> (the fan should be that one, which shown 'on' in step 3)
>
> 4b. (if step 3 failed) do (as root) 'echo 0 > /proc/acpi/fan/*/state'
> consequently for each fan device under /proc/acpi/fan/, check the
> following:
> - fans start spinning;
> - fans' states are correct ('cat /proc/acpi/fan/*/state'
> command)
>
> 5. check if the fan(s) start spinning.
>
> Please, get back to me with the results, test flow description and
> commands' outputs.
>
> Also, you could try the patches from bugs ##7122, 7570 for 2.6.20-rc3 to
> see if it help.
>

any ideas why i have no /proc/acpi/fan/*?

Notebook HP Pavillion dv8230us

--
[]'s
Salatiel

"O maior prazer do inteligente é bancar o idiota
diante de um idiota que banca o inteligente".
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