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Before upgrading to 16.04 I only had one "temp1" in my lm-sensors and psensor. Now I have two.

➜  ~ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +43.0°C  (crit = +128.0°C)

thinkpad-isa-0000
Adapter: ISA adapter
fan1:        2823 RPM

pch_wildcat_point-virtual-0
Adapter: Virtual device
temp1:        +42.0°C  

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +43.0°C  (high = +105.0°C, crit = +105.0°C)
Core 0:         +43.0°C  (high = +105.0°C, crit = +105.0°C)
Core 1:         +43.0°C  (high = +105.0°C, crit = +105.0°C)

What is pch_wildcat_point-virtual? I tried googling, but could not really find a result. Laptop a Lenovo x1 carbon from 2015.

I did find this: https://en.wikipedia.org/wiki/Platform_Controller_Hub , but I'm not sure if this is it? And if it is, is that some point in my laptop that has a temperature sensor?

1 Answer 1

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The Lenovo x1 carbon has an Intel H97 PCH (Platform Controller Hub), which was codenamed "Wildcat Point" during development. This "system on a chip" performs functions such as I/O (input/output) on the Gigabit LAN, SATA, PCIe & USB port and also contains various timers and controllers.

It has an internal temperature sensor located near its hottest point (the interface to the CPU) and sensors is reporting this. So the temperatures reported on your output (in descending order) are the CPU, the PCH, the CPU again, processor core 1 and processor core 2.

If you are interested its datasheet is here Intel series 9 chipset datasheet

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