---
name: "acpi_asus_wmi"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/acpi_asus_wmi"
---

# acpi\_asus\_wmi(4)

Asus Laptop WMI Extras

## NAME

**acpi\_asus\_wmi** – Asus Laptop WMI Extras

## SYNOPSIS

To compile this driver into the kernel, place the following line in your kernel configuration file:

**device acpi\_asus\_wmi**

Alternatively, to load the driver as a module at boot time, place the following line in [loader.conf(5)](/loader.conf/5.md):

```
acpi_asus_wmi_load="YES"
```

## DESCRIPTION

The **acpi\_asus\_wmi** driver provides support for the extra WMI-controlled gadgets, such as hotkeys and leds, found on Asus laptops. It allows one to use the [sysctl(8)](/sysctl/8.md) interface to manipulate the brightness of the LCD panel and keyboard backlight, power on/off different internal components, such as WiFi, Bluetooth, camera, cardreader, etc, read some sensors. Hotkey events are passed to [devd(8)](/devd/8.md) for easy handling in userspace with the default configuration in */etc/devd/asus.conf*. Some hotkey events, such as keyboard backlight and touchpad control, are handled inside the driver.

## SYSCTL VARIABLES

The following sysctls are currently implemented:

- *dev.acpi\_asus\_wmi.0.handle\_keys*

  Specifies whether driver should handle some hardware keys, such as keyboard backlight, internally.

Number of other variables under the same sysctl branch are model-specific.

Defaults for these variables can be set in [sysctl.conf(5)](/sysctl.conf/5.md), which is parsed at boot-time.

## FILES

- */dev/backlight/acpi\_asus\_wmi0*

  Keyboard [backlight(8)](/backlight/8.md) device node.

## SEE ALSO

[acpi(4)](/acpi/4.md), [acpi\_asus(4)](/acpi_asus/4.md), [acpi\_video(4)](/acpi_video/4.md), [sysctl.conf(5)](/sysctl.conf/5.md), [backlight(8)](/backlight/8.md), [devd(8)](/devd/8.md), [sysctl(8)](/sysctl/8.md)

## HISTORY

The **acpi\_asus\_wmi** driver first appeared in FreeBSD 10.0.

## AUTHORS

Alexander Motin ⟨*mav@FreeBSD.org*⟩