What the different hardware temperatures listed in psensor, sensor viewer etc reffer to?

Solution 1:

There is not a real way of telling which temperature corresponds to which part of your computer, so a way could be guessing.

I took a look at an old post regarding SpeedFan which appears to show the same values of temperature like psensor. I guess these are the values of each hardware component:

Temp1 : Aux

Temp2 : Motherboard

Temp3 : CPU

Temp4: GPU

Solution 2:

From here:

1. Psensors makes use of lm-sensors and hddtemp to get the temperatures, so you need to install these two packages:

   sudo apt-get install lm-sensors hddtemp
   

2. To get the hddtemp daemon to run on boot, use the following command:

   sudo dpkg-reconfigure hddtemp
   

and select "Yes" when asked if hddtemp should run at boot. Select the defaults for the other questions.

3. Next, you need to set up lm-sensors by running the following command:

   sudo sensors-detect
   

And answer "yes" to everything.

To avoid a system restart, run the following command to load the modules required by the sensors:

sudo service kmod start

(if no sensors show up in Pensor, try a system restart)

4. Install Psensor

The latest Psensor 1.0.2 is available in its official Unstable PPA for Ubuntu 14.04 only for now (it will be available in the stable PPA after the new packaging is accepted into Debian).

To add the Psensor Unstable PPA and install the latest Psensor in Ubuntu 14.04, use the following commands:

sudo add-apt-repository ppa:jfi/psensor-unstable
sudo apt-get update
sudo apt-get install psensor

What stands behind each name in the list can be seen by going to Sensor preferences, and look at the info for 'Chip'.