acpi_asus4
Asus laptop extras
Usage
device acpi_asus
Overview
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.
Currently, the following Asus laptops are fully supported:
-
xxN
-
A1x
-
A2x
-
D1x
-
J1x
-
L2B
-
L2D
-
L2E
-
L3C
-
L3D
-
L3H
-
L4E
-
L4R
-
L5x
-
L8x
-
M1A
-
M2E
-
M6R
-
S1x
-
S2x
-
V6V
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.