Re: Help with fan on fujitsu siemens

[Len Brown <lenb@kernel.org>]

On Friday 16 February 2007 13:25, you wrote:
> On 2/16/07, Len Brown <lenb@kernel.org> wrote:
> > On Friday 16 February 2007 02:46, Andras Lorincz wrote:
> >
> > > and the output of cat /proc/acpi/thermal_zone/*/* is:
> > >
> > > cooling mode:   active
> > > polling frequency:       30 seconds
> > > state:                   ok
> > > temperature:             49 C
> > > critical (S5):           105 C
> > > passive:                 79 C: tc1=3 tc2=1 tsp=80
> > > devices=0xf7e9c720
> > > active[0]:               65 C: devices=0xc17e4d9c
> > > active[1]:               55 C: devices=0xc17e4d38
> > >
> > > Some remarks:
> > >
> > >  - the polling frequency is not set by default so I
> > > run a script on startup which sets the polling
> > > frequency to 30 secs
> >
> > if you don't set polling frequency it is 0?
> > Does anything not work in that case?
> >
> > That is the ideal case -- as polling frequency 0
> > means that the system is event-driven.
> >
> > If you need to enable polling b/c something isn't working,
> > 3 seconds may be more prudent than 30 seconds.
> >
> > >  - the state reported by
> > > /proc/acpi/thermal_zone/THRM/state changes correctly
> > > according to changing temperatures but it is not in
> > > accordance with the real state of the cooler.
> >
> > Do you have /proc/acpi/fan/*/* files?
> > What do they say?
> >
> > -Len
> >
> 
> Now I'm playing around with 2.6.20. If I don't set the polling
> frequency at boot time then cat
> /proc/acpi/thermal_zone/polling_frequency gives me:
> 
> <polling disabled>
> 
> I also tried setting the polling frequency to 0 but doesn't help. ls
> /proc/acpi/fan gives me:

right, polling frequency of 0 disables polling.
when polling is disabled, the thermal system is event driven.

why do you want to enable polling -- what is not working
when it is disabled?

> FAN0  FAN1
> 
> and ls /proc/acpi/fan/FAN0 and ls /proc/acpi/fan/FAN1 give me:
> 
> state

s/ls/cat/

-Len