Thinkpads Forum

Posted: **Wed Jun 02, 2010 7:03 am**

I use the R40 thinkpad in Linux.
Linux hardware info reports one acpi thermal zone, TMH0, but I don't which one it is.
In another section of the hardware report, another temperature is shown, but it doesn't mention if it's a acpi controlled one. The other one is some 4-5° higher then TMH0.
How many sensors are there in fact (a cpu one and a hdd one)? Which one could be the TMH0

Also, the report show the fan speed at 0rpm.
Should acpi not report the real speed?
The fan module is activated in linux.

In reality, the fan is working as I hear it blowing when the temperature is rising.

Anybody an idea?

Posted: **Wed Jun 02, 2010 9:39 am**

Here's a trick I usually do in Linux if I am confused as to which sensor is the CPU. Display all sensors, and watch them while doing a CPU intensive task. Whichever one goes up rapidly is the CPU sensor. I am moving this thread to the Linux section for more exposure.
As an example -
http://www.thelinuxdaily.com/2010/03/a- ... th-md5sum/

Posted: **Mon Jun 07, 2010 7:57 pm**

Thank you for moving the post to a better place. I wasn't aware of it until now.

I know now that the TMH0 one is the CPU sensor.
Following is the hw report

Code: Select all

-Cooling Fans-
fan1		: 0RPM
-Temperatures-
temp1		: 47,00°C
temp2		: 49,00°C
temp3		: 0,00°C
temp4		: 0,00°C
temp5		: 0,00°C
temp6		: 0,00°C
temp7		: 0,00°C
temp8		: 0,00°C
-Voltage Values-
-ACPI Thermal Zone-
THM0		: 47°C

What could be the other one then? Is there one on the HDD.
I don't seem to find such kind of in depth information.
Is there any good place for it?

Is the fan1 seen in ACPI?
Could there be something missing in the ACPI implementation of this linux (puppy linux)

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