On 2/16/07, Len Brown <[EMAIL PROTECTED]> wrote:
On Friday 16 February 2007 13:25, you wrote:
> On 2/16/07, Len Brown <[EMAIL PROTECTED]> 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
The CPU cooler doesn't start spinning when temperature raises,
although the output of `cat /proc/acpi/thermal_zone/THRM/state`
changes according to the temperature, so if temperature is less than
55 then `cat /proc/acpi/thermal_zone/THRM/state` returns state ok, if
temperature is between 55 and 65 then it returns state active[1] and
finally if temperature is higher then 65, `cat
/proc/acpi/thermal_zone/THRM/state` returns active[0] but the cpu
cooler won't ever start. If I issue the commands `echo 3 >
/proc/acpi/fan/FAN0/state` and `echo 0 > /proc/acpi/fan/FAN0/state`
then the cooler starts but then never stops even if the temperature
falls bellow 55 and manually also can be stopped by `echo 3 >
/proc/acpi/fan/FAN0/state`.
The same situation with polling set or not.
-
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
