Thermal sensor problem on T61 ? (Linux)

[ricard]

On my T61 (8898-CDG; 14.1" 1024x768 w/ Intel graphics) running Debian Squeeze, and looking at the output of 'sensors', I get:

acpitz-virtual-0
Adapter: Virtual device
temp1: +44.0°C (crit = +127.0°C)
temp2: +40.0°C (crit = +100.0°C)

thinkpad-isa-0000
Adapter: ISA adapter
fan1: 3388 RPM
temp1: +44.0°C
temp2: +40.0°C
temp3: +35.0°C
ERROR: Can't get value of subfeature temp4_input: Can't read
temp4: +0.0°C
temp5: +50.0°C
ERROR: Can't get value of subfeature temp6_input: Can't read
temp6: +0.0°C
temp7: +30.0°C
ERROR: Can't get value of subfeature temp8_input: Can't read
temp8: +0.0°C
temp9: +39.0°C
temp10: +40.0°C
temp11: +38.0°C
ERROR: Can't get value of subfeature temp12_input: Can't read
temp12: +0.0°C
ERROR: Can't get value of subfeature temp13_input: Can't read
temp13: +0.0°C
ERROR: Can't get value of subfeature temp14_input: Can't read
temp14: +0.0°C
ERROR: Can't get value of subfeature temp15_input: Can't read
temp15: +0.0°C
ERROR: Can't get value of subfeature temp16_input: Can't read
temp16: +0.0°C

According to http://www.thinkwiki.org/wiki/Thermal_Sensors, temp 1 is the CPU, and temp 4 is GPU. But on this machine apparently the GPU temperature can't be read (hence the 0.0°C reading). So is there something wrong with my machine, or does the sensor allocation vary between different T61 models (e.g. because mine has the integrated Intel graphics, whereas the ThinkWiki page is for a machine with Nvidia graphics)?

[Cigarguy]

It's reporting as it should. Integrated graphics don't have sensors to monitor temp. OR....only dedicated graphics have temp sensors.

[TuuS]

It's reporting as it should. Integrated graphics don't have sensors to monitor temp. OR....only dedicated graphics have temp sensors.

Agreed, the Intel graphics system is integrated into the boards chipset and has no separate temp sensor, so nothing to worry about.