linux-kernel - Re: 2.6.22-rc1-mm1 [cannot change thermal trip points]

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Message-ID: <20070517215321.GC7336@elf.ucw.cz>
Date:	Thu, 17 May 2007 23:53:21 +0200
From:	Pavel Machek <pavel@....cz>
To:	Len Brown <lenb@...nel.org>
Cc:	Maciej Rutecki <maciej.rutecki@...il.com>,
	Chuck Ebbert <cebbert@...hat.com>, len.brown@...el.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	torvalds@...ux-foundation.org
Subject: Re: 2.6.22-rc1-mm1 [cannot change thermal trip points]

On Thu 2007-05-17 15:08:39, Len Brown wrote:
> On Thursday 17 May 2007 09:36, Maciej Rutecki wrote:
> 
> > Many people need change trippoints, for example I have:
> > 
> > cat /proc/acpi/thermal_zone/TZ0/trip_points  | grep critical
> > critical (S5):           256 C
> > 
> > I _must_ change it to below 105 C, or edit DSDT table (too difficult to
> > me). I cannot use this kernel, when trip points are read only.
> 
> What bad things happen if you leave the critical trip point at 256?
> Do you find that you can drive the temperature over 105 and
> the system fails to shut down?

Something similar happened to me on XE3, yes.

(Actual values were different; BIOS specified critical temperature at
cca 95C, but hw killed the power at cca 83C. Setting critical trip
point at 80C made the problem go away.)
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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