[lm-sensors] Negative Values on many Systems

[Mark M. Hoffman]

Hello:

* Anian Wurzenberger <a.wurzenberger at transact-gmbh.de> [2007-06-05 10:38:37 +0200]:
> Hi,
> this is what I get on one system (Fedora5, kernel 2.6.15-1.2054 in this
> case, but we use different versions of Fedora on other systems with the
> same/similar problem) with sensors version 2.9.2 with libsensors version
> 2.9.2. (unfortunately I can´t find out what kind of board it is right
> now (can´t reboot or take it out of the rack), but it´s some server
> board with an Intel chipset):
>  
> w83627hf-isa-0290
> Adapter: ISA adapter
> [...]
> temp1:       +32 °C  (high =   +50°C, hyst =   +45°C)   sensor =
> thermistor   
> temp2:     -48.0 °C  (high =   +85°C, hyst =   +80°C)   sensor =
> thermistor   
> temp3:     +29.0 °C  (high =   +85°C, hyst =   +80°C)   sensor =
> thermistor
> [...]
>  
> Changing the sensor-types brings different values, but no useful ones.
> Also, the value doesn´t change over time, I always get -48.0 °C with the
> thermistor setting.
> If sensors logs into /var/log/messages, then there´s no entry.
> I would have posted more info in the first post, but I thought (and
> still think) this is a case of "no sensor attached", just wanted to make
> sure.

Yes, that's it.  Some other notes:

1) Use the 'ignore' statement in sensors.conf to hide temp2.

2) In theory, the BIOS should set the correct sensor type.  You shouldn't need
to change it.

3) You can run a CPU intensive process and watch for the other two temps to
rise.  The one that rises faster is probably the CPU.

Regards,

-- 
Mark M. Hoffman
mhoffman at lightlink.com