linux-kernel - Re: 2.6.27-rc1: critical thermal shutdown on thinkpad x60

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Date:	Tue, 12 Aug 2008 13:55:30 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Milan Broz <mbroz@...hat.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	ACPI mailing list <linux-acpi@...r.kernel.org>
Subject: Re: 2.6.27-rc1: critical thermal shutdown on thinkpad x60

On Tue 2008-08-12 13:44:27, Milan Broz wrote:
> Pavel Machek wrote:
> > Hi!
> >>> On Tue, Aug 12, 2008 at 11:41:35AM +0200, Pavel Machek wrote:
> >>>>>> Aug  6 11:00:10 amd kernel: ACPI: Critical trip point
> >>>>>> Aug  6 11:00:10 amd kernel: Critical temperature reached (128 C),
> >>>>>> shutting down.
> >>>>>> Aug  6 11:00:10 amd shutdown[24414]: shutting down for system halt
> >>>>>>
> >>>>>> ...and machine went down at that point :-(.
> >>>>> I hope you can easily reproduce it?
> >>>>>
> >>>>> So it's new in 2.6.27rc1 and wasn't in 2.6.26? Can you please
> >>>> Yes, I'm very sure. It makes machine basically unusable.
> >>> Does this mean you can easily reproduce it?  
> >>> Please do a bisect then. 
> >>>
> >>>> Not that one :-(. Thinkpad does not even have fan device: it is
> >>>> controlled by hardware.
> >> Hi,
> >> I see exactly the same on my x60s, but during upgrade to 2.6.26.2.
> > 
> > Are you sure?
> 
> yes. maybe some userspace tool controlling frequency is involved, no idea yet.
> But it is 2.6.26 tree for sure.

So it definitely is in 2.6.26.2, and it definitely is in 2.6.26?

...because I'm using 2.6.26, and see nothing..

> >> Now, the CPU cores remains on 1.67GHz and fan is unable to cool them properly
> >> under heavy load (even if I set "level disengaged" through thinkpad fan control,
> >> temperature sensor shows after a while 128 C (probably not real temp,
> >> I expect some critical flag => and it properly switch off the
> >> system...)
> > 
> > How do you control fans? I could not get anything but -EINVAL from IBM
> > ACPI driver :-(.
> 
> you need add fan_control=1 to thinkpad_acpi module
> 
> http://www.thinkwiki.org/wiki/How_to_control_fan_speed
> http://www.thinkwiki.org/wiki/ACPI_fan_control_script

Thanks for pointers!

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