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

Karasyov, Konstantin A
2007-01-11T14:16:28Z

Hi,

Unfortunately, thermal zones defined in your DSDT doesn't contain any trip points except critical, but the fan control requires at least one active trip point (_ACx) to be defined.
Also, there are no fan devices (i.e. device with 'PNP0C0B' HID) defined.

This means, that no fan and minimal thermal control is available on your system through the ACPI functionality.

Regards.
Konstantin.

>-----Original Message-----
>From: Salatiel Filho [mailto:salatiel.filho@gmail.com]
>Sent: Thursday, January 11, 2007 4:50 PM
>To: Karasyov, Konstantin A
>Cc: Matthew Brett; linux-acpi@vger.kernel.org
>Subject: Re: PROBLEM: CPU fan shuts down on load of fan.ko in kernel 2.6.18
>and later
>
>On 1/11/07, Karasyov, Konstantin A <konstantin.a.karasyov@intel.com> wrote:
>> Hi,
>>
>> Could you send acpidump command output?
>>
>sure. Attached
>>
>> Regards.
>> Konstantin.
>> >-----Original Message-----
>> >From: Salatiel Filho [mailto:salatiel.filho@gmail.com]
>> >Sent: Wednesday, January 10, 2007 6:19 AM
>> >To: Karasyov, Konstantin A
>> >Cc: Matthew Brett; linux-acpi@vger.kernel.org
>> >Subject: Re: PROBLEM: CPU fan shuts down on load of fan.ko in kernel
>2.6.18
>> >and later
>> >
>> >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".
>>
>
>
>--
>[]'s
>Salatiel
>
>"O maior prazer do inteligente é bancar o idiota
> diante de um idiota que banca o inteligente".
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