I installed sensors, but this don't show me the 4 temperatures of my 4 cores, I have a Intel Core i5,

Adapter: Virtual device
temp1:        +26.8°C  (crit = +100.0°C)
temp2:         +0.0°C  (crit = +100.0°C)

Adapter: ISA adapter
Core 0:       +40.0°C  (high = +95.0°C, crit = +105.0°C)
Core 2:       +47.0°C  (high = +95.0°C, crit = +105.0°C)

I followed the same procedure in other i5 machine, and sensors show me the 4 temperatures of the 4 cores, I installed: apt-get install lm-sensors, apt-get install hddtemp, sensors-detect, modprobe coretemp (in my case).

Why I can't see the other 2 cores' temperatures

What is temp1, temp2, coretemp-isa-0000, Adapter: ISA adapter

I saw in other forums that sensors show a lot of temperatures, How I can do that?, What other program I have to install?

  • What is the exact model of your processor? It may only have 2 physical cores (and hyperthreading).
    – Cry Havok
    Commented Jan 12, 2012 at 18:22

2 Answers 2


Maybe it is a different i5 CPU (Some are manufactured with 2 physical cores, some with 4, and some have HT enabled, which double the number of cores which the os sees. Check wiki Core i5 and run this cat /proc/cpuinfo

This will show more info about your cpu.

  • But in my System Monitor, it show 4 CPUs, I chek /proc/cpuinfo and it show 4 processors.
    – user37980
    Commented Jan 9, 2012 at 15:32
  • 1
    We've got a new i3 computer at the dormitory, it clearly has two cores. So I tried the cat /proc/cpuinfo, and it showed 4 cores. The cpufreq-info also showed 4 cores. htop showed 4 cores, but the sensors command showed only two temperatures. According to wikipedia, i3 is only manufactured with 2 cores. The other two are virtual cores. The OS sees 4 identical cores. Your configuration looks the same, you also have two physical cores and two virtual cores. There is no problem. The other machine has 4 physical cores. How you can measure a temperature, if a core physically doesn't exist?
    – gajdipajti
    Commented Jan 12, 2012 at 22:25

Use CPU Frequency Scaling Monitoring applet in panel, just add it to panel.

add to panel picture

After add to panel, you can edit the

Use Hardware Sensors Monitoring applet in panel. Hardware Sensors MonitoringPreferences to choose which CPU to monitor.

edit the Preferences to choose which CPU to monitor. choose CPU

  • 1
    Thanks but I don't want an applet, I use conky, only I want that sensors show me all temperatures.
    – user37980
    Commented Jan 9, 2012 at 15:38

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