linux-kernel - Re: 2.6.32-rc5: unexpected thermal shutdown?

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Date:	Tue, 3 Nov 2009 20:17:34 +0100
From:	Pavel Machek <pavel@....cz>
To:	Frans Pop <elendil@...net.nl>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.32-rc5: unexpected thermal shutdown?

On Tue 2009-11-03 20:12:52, Frans Pop wrote:
> On Tuesday 03 November 2009, you wrote:
> > pavel@amd:~$ grep . /proc/acpi/thermal_zone/*/*
> > /proc/acpi/thermal_zone/THM0/cooling_mode:<setting not supported>
> > /proc/acpi/thermal_zone/THM0/polling_frequency:<polling disabled>
> > /proc/acpi/thermal_zone/THM0/state:state:                   ok
> > /proc/acpi/thermal_zone/THM0/temperature:temperature:           58 C
> > /proc/acpi/thermal_zone/THM0/trip_points:critical (S5):         127 C
> 
> Right, so this zone does not have a passive trip point. If it reaches 
> critical temp before THM1, it would cause exactly what you saw.
> 
> Try recreating the same situation while watching the temp for both thermal 
> zones.

Well, I'll try _not_ to recreate this situation :-). If it starts
happening too often, I'll play with passive limits. But... thanks!

> > 128C means "slightly fake" temperature sensor. It seems that it just
> > produces 128 in THM0 when temperature exceeds some other limit.
> 
> Hmm. If THM0 does not have *any* other values between 58 and 128 then the 
> above will probably not work. If it makes a few jumps, you should
> adjust

It has some values between 58 and 128, but I'm not sure how many.

									Pavel
-- 
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