Lm-sensors-3-6-0
Introduction to Lm_sensors
The lm_sensors package provides userspace
support for the hardware monitoring drivers in the Linux kernel.
This is useful for monitoring the temperature of the CPU and adjusting the
performance of some hardware (such as cooling fans).
This package is known to build and work properly
using an LFS 11.3 platform.
Package Information
lm_sensors Dependencies
Required
Which-2.21
Optional
RRDtool (required to
build the sensord program) and
dmidecode
(runtime)
User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/lm_sensors
Kernel Configuration
Getting your kernel config right is an iterative process that may require
that you recompile your kernel a couple of times. The simplest way to go
about it is to start by enabling modules and then compile everything that
may be needed by Lm Sensors as a module:
[*] Enable loadable module support ---> [CONFIG_MODULES]
Device Drivers --->
[*] PCI support ---> [CONFIG_PCI]
I2C support --->
<*/M> I2C device interface [CONFIG_I2C_CHARDEV]
I2C Hardware Bus support --->
<M> (configure all of them as modules)
<*/M> Hardware Monitoring support ---> [CONFIG_HWMON]
<M> (configure all of them as modules)
Recompile your kernel and reboot into the new kernel. Don't forget to
make modules_install We will come back to the kernel in
the Configuring section below.
Installation of Lm_sensors
Install Lm_sensors by running the following
commands:
make PREFIX=/usr \
BUILD_STATIC_LIB=0 \
MANDIR=/usr/share/man
This package does not come with a test suite.
Now, as the root user:
make PREFIX=/usr \
BUILD_STATIC_LIB=0 \
MANDIR=/usr/share/man install &&
install -v -m755 -d /usr/share/doc/lm_sensors-3-6-0 &&
cp -rv README INSTALL doc/* \
/usr/share/doc/lm_sensors-3-6-0Command Explanations
BUILD_STATIC_LIB=0: This parameter disables
compiling and installing the static version of
libsensors.
PROG_EXTRA=sensord: This parameter enables
compiling sensord, a daemon that can monitor your
system at regular intervals. Compiling sensord requires
RRDtool. Be sure
to install RRDtool in /usr
by running make prefix=/usr when building it.
Otherwise, Lm_sensors will not find it easily.
Configuring Lm_sensors
Config File
/etc/sensors3.conf
Configuration Information
To find out what hardware sensors your system has, issue the following
command as the root user:
sensors-detect
The appropriate modules should have been loaded and a summary is
displayed at the end. Now you know what is needed and you can recompile
your kernel to enable just the options you need (i.e., don't enable the
modules you cannot use).
Contents
Installed Programs:
fancontrol, isadump, isaset, pwmconfig, sensors, sensors-conf-convert,
sensors-detect, and optionally, sensord
Installed Library:
libsensors.so
Installed Directories:
/etc/sensors.d,
/usr/include/sensors and
/usr/share/doc/lm_sensors-3-6-0
Short Descriptions
fancontrol |
is a shell script for use with lm_sensors.
It reads its configuration from a file, then
calculates fan speeds from temperatures and sets the corresponding
PWM outputs to the computed values
|
isadump |
is a small helper program to examine registers visible through the
ISA bus. It is intended to probe any chip that lives on the ISA bus
working with an address register and a data register (I2C-like
access) or a flat range (of up to 256 bytes)
|
isaset |
is a small helper program to set registers visible through the ISA
bus
|
pwmconfig |
tests the pulse width modulation (PWM) outputs of sensors and
configures fancontrol
|
sensors |
prints the current readings of all sensor chips
|
sensors-conf-convert |
is a Perl script to convert
lm-sensors version 2 configuration files
to work with version 3
|
sensors-detect |
is a Perl script that will walk you
through the process of scanning your system for various hardware
monitoring chips (sensors) supported by
libsensors, or more
generally by the lm_sensors tool suite
|
sensord |
(optional) is a daemon that can be used to periodically log sensor
readings
|
libsensors.so
|
contains the lm_sensors API functions
|