Re: cpufreq stops working after a while

[Mark Lord <lkml@rtr.ca>]

Pallipadi, Venkatesh wrote:
> > Mark Lord wrote:
> > Yup, thermal.
> > Trips shortly after I see 66C in 
> > /proc/acpi/thermal_zone/THM/temperature
> >
> > If I stop number crunching for a bit, the temperature drops down to the
> > low 50's, and the max freq then gets set back to 1100.
> >
> > Mmmm.. is there a way to control the high/low thermostat values there?
..
> What is the "cooling mode" you have in
> /proc/acpi/thermal_zone/THM/cooling_mode.
> Output of all files in that directory will help.

/proc/acpi/thermal_zone/THM/cooling_mode:
	<setting not supported>
	cooling mode:   critical

/proc/acpi/thermal_zone/THM/polling_frequency:
	<polling disabled>

/proc/acpi/thermal_zone/THM/state:
	state:                   ok

/proc/acpi/thermal_zone/THM/temperature:
	temperature:             49 C

/proc/acpi/thermal_zone/THM/trip_points:
	critical (S5):           95 C

==========

This is a passively cooled notebook, so there's no fan
to control.  They probably self-limit the CPU speed when
the temperature gets high to prevent meltdown of the drive.

But I would like to raise the lower limit if possible,
allowing the speed to bump back up at, say 58C rather
than waiting for 52C as it currently does.

??

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