Wrong temperature readings

Jean Delvare khali at linux-fr.org
Thu Apr 14 19:41:16 CEST 2005

Hi Roger,

> > These messages don't come from our drivers. They are either from
> > ACPI or from CPU-specific MCE. Search the web for "Running in
> > modulated clock mode" and you'll find several references to your
> > problem.
> I know, thats why I tried using sensors(1) to get the
> CPU/MB-temperature.
> And there's the problem (if you look at the output from sensors(1)).
> All three sensors tell me about ~127 degres Celsius (260 Farenheit),
> and I doubt that thats the case.

I don't think that there is any thermal sensor connected to the W83627HF
chip. You must have another hardware monitoring chip for the
temperatures. Intel has an history of using LM85/ADM1027-compatible

The output of sensors-detect you provided shows that it didn't find any
PCI SMBus master. The lspci output reveals a 6300ESB, which is too
recent for lm_sensors 2.8.6. That explains it.

I don't know which kernel you are using, but if it is a recent 2.6
kernel (>= 2.6.7) you might try modprobing i2c-i801 and run
sensors-detect again (which should then find that
LM85/ADM1027-compatible chip - unless it is itself too new).

If you have an older 2.6 kernel, you'll need to upgrade.

Jean Delvare

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