2007-06-13 16:08:53

by Renato S. Yamane

Subject: [Processor] Hi-Temperature showed in trip points

Hi,
I have a laptop Toshiba M45-S355 (with Intel Pentium M Processor 750 -
1.86GHz) and trip points show me hi-temperature (that is unsupported by
this processor):

$ uname -a
Linux mandachuva 2.6.21.1 #1 PREEMPT Sun May 20 22:28:53 BRT 2007 i686
GNU/Linux

$ cat /proc/acpi/thermal_zone/TZCL/trip_points
critical (S5): 105 C

MAX temperature suported by this processor is 100?C (I see this in Intel
specifications), so I think that is not very good idea allow
temperatures higher than 100?C.

$ cat /proc/acpi/processor/CPU0/info
processor id: 0
acpi id: 0
bus mastering control: yes
power management: yes
throttling control: yes
limit interface: yes

Best regards,
Renato S. Yamane

2007-06-13 23:11:20

by Robert Hancock

Subject: Re: [Processor] Hi-Temperature showed in trip points

Renato S. Yamane wrote:
> Hi,
> I have a laptop Toshiba M45-S355 (with Intel Pentium M Processor 750 -
> 1.86GHz) and trip points show me hi-temperature (that is unsupported by
> this processor):
>
> $ uname -a
> Linux mandachuva 2.6.21.1 #1 PREEMPT Sun May 20 22:28:53 BRT 2007 i686
> GNU/Linux
>
> $ cat /proc/acpi/thermal_zone/TZCL/trip_points
> critical (S5): 105 C
>
> MAX temperature suported by this processor is 100?C (I see this in Intel
> specifications), so I think that is not very good idea allow
> temperatures higher than 100?C.

That trip point comes from the BIOS.. likely complain to Toshiba, if
anyone. Likely the CPU itself will start throttling or shut down well
before that temperature is reached.

--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from [email protected]
Home Page: http://www.roberthancock.com/

2007-06-16 07:03:57

by Pavel Machek

Subject: Re: [Processor] Hi-Temperature showed in trip points

Hi!

> I have a laptop Toshiba M45-S355 (with Intel Pentium M
> Processor 750 - 1.86GHz) and trip points show me
> hi-temperature (that is unsupported by this processor):
>
> $ uname -a
> Linux mandachuva 2.6.21.1 #1 PREEMPT Sun May 20 22:28:53
> BRT 2007 i686 GNU/Linux
>
> $ cat /proc/acpi/thermal_zone/TZCL/trip_points
> critical (S5): 105 C

echo right values into trip points to lower this.

Note: Len removed that functionality in 2.6.22.

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html