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ACPI_ASUS(4) Device Drivers Manual ACPI_ASUS(4)

NAME

acpi_asus —
Asus Laptop Extras

SYNOPSIS

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

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

acpi_asus_load="YES"

DESCRIPTION

The acpi_asus driver provides support for the extra ACPI-controlled gadgets, such as hotkeys and leds, found on recent Asus (and Medion) laptops. It allows one to use the sysctl(8) interface to manipulate the brightness of the LCD panel and the display output state. Hotkey events are passed to devd(8) for easy handling in userspace with the default configuration in /etc/devd/asus.conf.

Currently, the following Asus laptops are fully supported:

  • xxN
  • A1x
  • A2x
  • A3N
  • A4D
  • A6VM
  • D1x
  • J1x
  • L2B
  • L2D
  • L2E
  • L3C
  • L3D
  • L3H
  • L4E
  • L4R
  • L5x
  • L8x
  • M1A
  • M2E
  • M6N
  • M6R
  • S1x
  • S2x
  • V6V
  • W5A
  • Eee PC

Additionally, acpi_asus also supports the Asus-compatible ATK0100 interface found in Samsung P30/P35 laptops.

SYSCTL VARIABLES

The following sysctls are currently implemented:
hw.acpi.asus.lcd_brightness
Makes the LCD backlight brighter or dimmer (higher values are brighter).
hw.acpi.asus.lcd_backlight
Turns the LCD backlight on or off.
hw.acpi.asus.video_output
Sets the active display to use according to a bitwise OR of the following:

No display
LCD
CRT
TV-Out

Some models also support video switching via the generic acpi_video(4) driver. Most models do not, however.

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

SEE ALSO

acpi(4), acpi_asus_wmi(4), acpi_video(4), sysctl.conf(5), sysctl(8)

The acpi4asus Project, http://sourceforge.net/projects/acpi4asus/.

HISTORY

The acpi_asus driver first appeared in FreeBSD 5.3.

AUTHORS

The acpi_asus driver and this manual page were written by Philip Paeps <philip@FreeBSD.org>.

Inspiration came from the acpi4asus project started by Julien Lerouge which maintains a driver implementing this functionality in the Linux kernel.

February 8, 2010 Linux 4.19.0-10-amd64