Options are from 20 to 100 percent in 10 percent increments.Ĭustom: Allows the fan speed to be customized based on processor temperature, minimum duty cycle, and duty cycle increment (see Other Fan Control Settings, below). Optionįixed: Allows the fan speed to be set at a fixed speed and never change. See the table below for fan control definitions. Available settings can vary, depending on Intel NUC model. System fan control settings in BIOS can be changed to meet the needs of your system usage model. Press F2 during start to enter BIOS Setup.Follow these steps to view or change system fan control settings: Many of these modules require you to add acpi_enforce_resources=lax to the kernel command line to load.This document covers cooling and fan control options in BIOS Setup for Intel® NUC products. This often results in sensors being able to report various temperature and voltage readings, and the fancontrol script ( packaged separately in Debian/Ubuntu ) can be configured to manipulate the fan speed in response to the temperature readings. You run sensors-detect and it will probe for known controllers and can configure the correct driver to be loaded to manipulate it. Many of these hardware controllers can be detected by the lm-sensors package. Generally the bios ACPI tables don't provide the fan interfaces and just leave it up to a hardware controller to manage.

You might look in /sys/class/thermal and see if there are any fans that show up under there and if they can have their settings changed. Unfortunately, I have yet to see a single bios vendor actually comply with the standard.

Fans are supposed to be managed by ACPI, which allows the kernel to cooperate with the bios to monitor temperature and adjust the fan speed automatically using bios provided rules.

Manual fan control laptop