Lm sensors
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lm_sensors (Linux-monitoring sensors), a free open source software-tool for Linux, provides tools and drivers for monitoring temperatures, voltage, and fans.
This document tells you how to install, setup, and use lm_sensors so that you can monitor CPU and/or motherboard temperature and fan speeds.
Contents |
Installation
Daemon
Start the daemon
Add the deamon for every boot!
Setting up lm_sensors
Use
Then your conf file /etc/sysconfig/lm_sensors will be ready.
Testing your lm_sensors
You'll get something like this
it8712-isa-0290 Adapter: ISA adapter VCore 1: +1.63 V (min = +0.00 V, max = +4.08 V) ALARM VCore 2: +0.00 V (min = +0.00 V, max = +4.08 V) ALARM +3.3V: +3.30 V (min = +0.00 V, max = +4.08 V) ALARM +5V: +4.87 V (min = +0.00 V, max = +6.85 V) ALARM +12V: +12.03 V (min = +0.00 V, max = +16.32 V) ALARM -12V: -27.36 V (min = -27.36 V, max = +3.93 V) ALARM -5V: -13.64 V (min = -13.64 V, max = +4.03 V) ALARM Stdby: +4.95 V (min = +0.00 V, max = +6.85 V) ALARM VBat: +4.08 V fan1: 3994 RPM (min = 0 RPM, div = 2) fan2: 0 RPM (min = 0 RPM, div = 2) fan3: 0 RPM (min = 0 RPM, div = 2) M/B Temp: +44°C (low = -1°C, high = +127°C) sensor = thermistor ALARM CPU Temp: +32°C (low = -1°C, high = +127°C) sensor = thermistor ALARM Temp3: -1°C (low = -1°C, high = +127°C) sensor = disabled ALARM
For details about the conf file, see the manual
Using sensor data
Graphical Frontends
There are a variety of front-ends for sensors data. Some are listed below. The name in italicized text is the name of the package in the repo, in other words, you can install them via pacman.
- sensors-applet - an applet for the GNOME Panel to display readings from hardware sensors, including CPU temperature, fan speeds and voltage readings.
- ksensors - ksensors is nice lm_sensors frontend for KDE
- xsensors - X11 interface to lm_sensors
- xfce4-sensors-plugin - A lm_sensors plugin for the Xfce panel
- conky - Conky is an advanced, highly configurable system monitor for X based on torsmo
- superkaramba - Superkaramba is a tool which gives posibility to create different widgets for KDE desktop. Check the karamba section on kde-look.org for examples of making karamba front-ends for sensors data.
Problems encountered
Problem 1: When I launch sensors-detect, I have this message: No i2c device files found.
Solution: