linux-kernel - Re: swsusp and suspend2 like to overheat my laptop

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Date:	Wed, 9 Aug 2006 01:53:52 +0200
From:	Pavel Machek <pavel@....cz>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Suspend2-devel@...ts.suspend2.net, linux-pm@...l.org,
	ncunningham@...uxmail.org
Subject: Re: swsusp and suspend2 like to overheat my laptop

Hi!

> A few months ago, I installed suspend2 on my laptop.  It worked great for
> a few days, when suddenly my laptop started to get very hot and the fan
> costantly went off, and then I started getting these:

I take it as "if I keep it for a week powered off, it will not do
this".

> ---
> Message from syslogd@...alhost at Tue Aug  8 16:08:53 2006 ...
> localhost kernel: CPU0: Temperature above threshold
> 
> Message from syslogd@...alhost at Tue Aug  8 16:08:53 2006 ...
> localhost kernel: CPU1: Temperature above threshold
> 
> 
> Message from syslogd@...alhost at Tue Aug  8 16:08:53 2006 ...
> localhost kernel: CPU0: Running in modulated clock mode
> 
> Message from syslogd@...alhost at Tue Aug  8 16:08:53 2006 ...
> localhost kernel: CPU1: Running in modulated clock mode
> ---

P4 has thermal protection, so you are actually safe.

Nigel is right, this is acpi problem, but I guess we can help it.  Do
you have /proc/acpi/fan? Do you have /proc/acpi/ibm/fan? Can you try
playing with them?

And yes, this should go into bugzilla.kernel.org.

> Recently, I've decided to try out swsusp.  Well, it has been working fine
> for almost a week now.  But unfortunately, I just started to have my fan
> go off constantly, and I'm getting the above messages again (hence why
> the date on the messages is today). Checking out the temp, it's going into
> the high 70C. That's not too bad, but it only happens when suspending
> every night instead of shutting down.

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