ACPI_ASUS(4)

NAME

     acpi_asus -- Asus Laptop Extras

SYNOPSIS

     device acpi_asus

DESCRIPTION

     The acpi_asus driver provides support for the extra ACPI-controlled gad-
     gets, such as hotkeys and leds, found on recent Asus (and Medion) lap-
     tops.  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.

     Currently, the following laptops are fully supported:

	   L2D
	   L3C
	   L3D
	   L3H
	   L8L
	   M1A
	   M2E

SYSCTLS

     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:

	     0	     No display
	     1	     LCD
	     2	     CRT
	     4	     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_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.