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_asusAlternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
acpi_asus_load="YES"
DESCRIPTION
Theacpi_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.
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:
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, who maintains a driver implementing this functionality in the Linux kernel.