The second "field" is the actual value to set. Each configuration option first points to a PWM device which is written to which sets the fan speed. The rest of the configuration file is split into (at least) two values per configuration option. INTERVAL: how often the daemon should poll CPU temps and adjust fan speeds. Here is a sample configuration file:ĭEVPATH=hwmon0=devices/platform/coretemp.0 hwmon2=devices/platform/w83627ehf.656įCTEMPS=hwmon0/device/pwm1=hwmon0/device/temp1_inputįCFANS= hwmon0/device/pwm1=hwmon0/device/fan1_input Users wishing more more control may need to tweak the generated configuration. The problem is that the script does not wait long enough before ramping up or down the PWM.
Note: On several systems, the included script may report errors as it tries to calibrate fans to the respective pulse-width modulation (PWM). Before doing this be sure to have a low CPU load.
Smc fan control 32 bit how to#
Warning: Some of the steps outlined below describe how to tweak fan speeds. The default configuration options should create /etc/fancontrol configuration file: Once sensors are properly configured, use pwmconfig to test and configure fan speed control.
Smc fan control 32 bit full#
Note: Advanced users may want to skip this section and write /etc/fancontrol on their own, which also saves them from hearing all of the fans at full speed. If not, increase the divisor to 8, 16, or 32. Run sensors again, and check if there is an RPM readout. Which will reload the configuration files. Replacing coretemp-isa- with name of the chipset and X with the number of the CPU fan to change. The first line of the sensors output is the chipset used by the motherboard for readings of temperatures and voltages. If fan speed is shown and higher than 0, skip the next step. If the output does not display an RPM value for the CPU fan, one may need to increase the fan divisor. Another alternative is to use absolute device names in the configuration file. Specifying them like this will create a reproducible order. In the modules-load.d file place one module name per line. If not there, run as root sensors-detect accepting the defaults. In /etc/conf.d/lm_sensors you find the modules. In other words, using the lm_rvice causes inconsistencies boot-to-boot which will render the configuration file for fan control worthless for a consistency point of view. Instead, manually place them in /etc/modules-load.d/load_nf since the order in which these modules are loaded dictate the order in which the needed symlinks for hwmon get created. It is recommended not to use lm_rvice to load the needed modules for fancontrol.
Smc fan control 32 bit drivers#
Check the official lm-sensors devices table to see if experimental drivers are available for such motherboards. Support for newer motherboards may not yet be in the Linux kernel.
This article covers configuration/setup of the utility.įor some Dell laptops, an alternative is #i8kutils. Latest revision as of 06:29, 10 June 2017įancontrol, part of lm_sensors, can be used to control the speed and sound of CPU/case fans. ( → fancontrol: Link to package providing a GUI)