Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 01 Mar 2008 18:24:40 +0100
From:      Johannes Dieterich <dieterich.joh@googlemail.com>
To:        Peter Jeremy <peterjeremy@optushome.com.au>,  freebsd-acpi@freebsd.org
Subject:   Re: [RFC] Patch to enable temperature ceiling in powerd
Message-ID:  <47C99158.4000106@gmail.com>
In-Reply-To: <20080221083635.GI51095@server.vk2pj.dyndns.org>
References:  <20080220213200.BD12E4500F@ptavv.es.net> <47BCA0EA.4080508@gmail.com> <Pine.GSO.4.64.0802201701420.7855@sea.ntplx.net> <20080221083635.GI51095@server.vk2pj.dyndns.org>

next in thread | previous in thread | raw e-mail | index | archive | help
Hello everybody!

To get back to this discussion (sorry, normal job kicked me quite a bit
last week).

Peter Jeremy wrote:
> On Wed, Feb 20, 2008 at 05:06:41PM -0500, Daniel Eischen wrote:
>> I'm having similar problems with an Intel STL2 Tupelo motherboard
>> after upgrading to 7.0.
> 
> I had problems with one TZ on my laptop occasionally reporting
> nonsense values.  I suspect it was actually a dry joint somewhere near
> the sensor.  The MB eventually failed and the new MB is OK.  We had a
> similar issue on a server at work - the vendor noticed that the system
> was reporting an abnormally high temperature in one zone whilst
> investigating an unrelated problem.  We eventually decided it was a
> faulty sensor and a replacement board fixed it.
What I have now is the original hard drive (some 80 gig Fujitsu one)
with a freshly installed Fedora 8 on it. I have been letting two
instances of gnuchess playing against each other for a couple of hours
(yes, I know... best stress test ever... ;-) ) which kept cpu usage at a
nice 100 percent on both cores for all that time.
proc/acpi/thermal_zones/THM1/temperature (and THM0) reported
temperatures around 70 degrees, never over 72 for all that time. Lid was
closed, fan worked (not very noisy even) and blew a good load of hot air
out. I am tempted to say that my overheating problem is not hardware
related. Only parts different were ath0 not working with Fedora and hard
drive being not the 160 gig WD I am using for FreeBSD.

> 
>>  Only under load does the temperature
>> shoot up, but I know the chip isn't getting hot and the fan
>> is running - I've felt around in there and nothing was even
>> close to the 117+C it was sensing.
> 
> Apart from the actual CPU, most parts of a system have a fairly
> significant thermal mass so a rapid change in temperature either
> indicates a catastrophic failure or the temperature sensor isn't
> really reporting the temperature of the relevant zone.
> 
I totally agree with you, Peter. And either the hardware just fails
under FreeBSD  (or with ath0 and the other hard drive running) OR it is
a FreeBSD problem.

Everybody is invited to tell me how to stress test the system as brutal
as possible to show that the problem is hardware related.

Regards,

Johannes



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?47C99158.4000106>