Warning: see the warning in top of smm.c. Luckily there is a way to disable BIOS fan control by writing to SMM registers. If it works, but somewthing else is fighting back on the setted speed (reported by many users on Dell Latitude laptops), this is due to scheduled SMM sessions setting the fan speed back. Install i8kutils: $ sudo apt-get install i8kutils You suffer from that as well according to a previous comment. Several users report success on their Dell Laitude laptops as well (I'm one of them, on a Dell Latitude E7440) - however, a trick is often needed to get rid of interfering BIOS fan control. However, there's a package called i8kutils that is written to control the fan on Dell Inspiron laptops through SMM BIOS. as a consequence, the fancontrol/ pwmconfig program won't work. as a consequence, trying with ACPI boot parameters and the like will failĭell Latitude laptops, as far as I know, lack pwm controllable fans (*2).Two common and straight-forward means of controlling the fan on laptops are through ACPI and through PWM pins, however, unfortunately:ĭell laptops lacks ACPI fan control capability (*1) For completeness, I'll include some general notes on fan control on Dell laptops, and full instructions for i8kutils. You can also buy cheap linux vps to practice it on a routine basis.You'll most likely be able to solve your problem with something else overriding your i8kctl fan commands by the method given in this answer. When changing the fan speed, you should be mindful of staying within the recommended speed range for your device to avoid any potential damage.The command line tools to change the fan speed will vary depending on your Linux distribution but are usually easy to find with a quick online search.Changing the fan speed can help improve the cooling performance of your computer and lower noise levels from your fan.Note: Unfortunately, fancontrol won’t work after suspending, so you must restart your device to use it again. Shortly after running this command, you should hear fans starting. To run fancontrol, use the command below: And rebooting may change the order of hwmon devices and cause fancontrol to stop working. Hwmon class devices are used to group all hwmon sensors into one directory. Note: you may experience issues running /sys/class/hwmon/ paths for your configuration file. This command creates “etc/fancontrol” a customized configuration file. ConfigurationĪfter configuring sensors, you must use the following command to test and configure fan speed control. Note: In case of not displaying an RPM value for your CPU fan, increase your fan divisor for sensors. Now run the command below to see if the sensors are detected correctly. This command detects all of your sensors present and uses them for fancontrol. To get started, run the following command: Check the items below to see how it works: lm-sensors It works by monitoring the temperatures of various components in the system and adjusting the fan speeds accordingly. Fancontrol (lm-sensors)įancontrol is a feature of the lm-sensors package that allows for the automatic control of computer fans. And it’s happening by using the lm-sensors utility, which reads the system's temperature and adjusts the fan speed accordingly. It allows users to manually adjust the speed of their fans to match their needs, whether for maximum cooling or minimal noise. Fan Speed Control via Command Line in LinuxĬommand lines are powerful and convenient tools for managing your system's cooling. Warning : Avoid stopping fans on high system loads because it may damage your hardware permanently. Let's get started! We suggest you read the article test disk speed in Linux. We'll show you how to adjust your fan speed using the command line. That's why we've put together this guide on how to change fan speed in Linux. By using commands, you can reduce noise and save energy, which may be unclear if you don't know what you're doing. Want to know how you can change the fan speed in Linux? Using the command line is one of the methods that can help you adjust your fan speed. Fan Speed Control via Command Line in Linux List of content you will read in this article:
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