linux-kernel - Re: 2.6.21-rc5: Thinkpad X60 gets critical thermal shutdowns

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Message-Id: <8393D4C0-57C5-4CD2-8CA4-E4241E74FB4E@mac.com>
Date:	Sun, 1 Apr 2007 14:57:57 -0400
From:	Kyle Moffett <mrmacman_g4@....com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andi Kleen <ak@...e.de>, "Brown, Len" <len.brown@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: 2.6.21-rc5: Thinkpad X60 gets critical thermal shutdowns

On Mar 31, 2007, at 02:36:08, Jeremy Fitzhardinge wrote:
> When I run 2.6.21-rc5 + Andi's x86 patches + paravirt_ops patches,  
> I've been getting my machine shut down with critical thermal  
> shutdown messages:
>
> Mar 30 23:19:03 localhost kernel: ACPI: Critical trip point
> Mar 30 23:19:03 localhost kernel: Critical temperature reached (128  
> C), shutting down.
> Mar 30 23:19:03 localhost kernel: Critical temperature reached (128  
> C), shutting down.
> Mar 30 23:19:03 localhost shutdown[19417]: shutting down for system  
> halt
>
> and the machine does feel pretty hot.  Interestingly, when the  
> machine reboots, the fan spins up to a noticeably higher speed, so  
> it seems that maybe something is getting fan speed control wrong.

Well, 128C is more than hot enough to boil water and well above the  
thermal tolerances of most CPUs, so I would imagine that were your  
CPU actually that hot it wouldn't be capable of printing the  
"Critical temperature reached" messages, let alone properly rebooting.

Cheers,
Kyle Moffett

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