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

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Date:	Thu, 7 Aug 2008 12:38:18 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	kernel list <linux-kernel@...r.kernel.org>,
	ACPI mailing list <linux-acpi@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.27-rc1: critical thermal shutdown on thinkpad x60

Hi!

> > 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 :-(.
> 
> This one is quite repeatable:
> 
> Aug  7 10:46:24 amd dhclient: DHCPACK from 10.20.0.2
> Aug  7 10:46:24 amd dhclient: bound to 10.20.5.28 -- renewal in 7200
> seconds.
> Aug  7 10:50:46 amd kernel: thinkpad_acpi: unhandled HKEY event 0x6022
> Aug  7 10:51:03 amd last message repeated 48 times
> Aug  7 10:51:05 amd kernel: ACPI: Critical trip point
> Aug  7 10:51:05 amd kernel: Critical temperature reached (128 C),
> shutting down.
> Aug  7 10:51:05 amd shutdown[1928]: shutting down for system halt
> Aug  7 10:51:06 amd init: Switching to runlevel: 0
> Aug  7 10:51:06 amd kernel: thinkpad_acpi: unhandled HKEY event 0x6022
> Aug  7 10:51:09 amd last message repeated 7 times
> Aug  7 10:51:09 amd kernel: ACPI: Critical trip point
> Aug  7 10:51:09 amd kernel: Critical temperature reached (128 C),
> shutting down.
> Aug  7 10:51:12 amd exiting on signal 15
> Aug  7 10:54:01 amd syslogd 1.5.0#1: restart.
> Aug  7 10:54:01 amd kernel: klogd 1.5.0#1, log source = /proc/kmsg
> started.
> 
> ...and it does not seem to be stray reading from the sensor: cat
> /proc/acpi/therm*/*/* shows the bogus value in like 5 consecutive
> readings.
> 
> Plus the temperature rises up to 95C before this triggers, and machine
> is so hot it refuses to start again. Trip points seem to assume 128C,
> too:
> 
> root@amd:~# cat /proc/acpi/thermal_zone/THM*/trip*
> critical (S5):           127 C
> critical (S5):           97 C
> passive:                 93 C: tc1=5 tc2=4 tsp=600 devices=CPU0 CPU1
> root@amd:~#

while true; do echo -n; done &
while true; do echo -n; done &

is enough to trigger this. According to /proc/acpi/ibm, fan is running
too slowly...?
									Pavel

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