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

Salatiel Filho
2007-01-11T14:37:07Z

On 1/11/07, Karasyov, Konstantin A <konstantin.a.karasyov@intel.com> wrote:
> 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.

So who controls fan on and off when i am on linux ?

>
>
> 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".
>

--
[]'s
Salatiel

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