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acpi_asus - Asus Laptop Extras
To compile this driver into the kernel, place the following line in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
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:
Additionally, acpi_asus also supports the Asus-compatible ATK0100
interface found in Samsung P30/P35 laptops.
The following sysctls are currently implemented:
Makes the LCD backlight brighter or dimmer (higher values are
Turns the LCD backlight on or off.
Sets the active display to use according to a bitwise OR of the
0 No display
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.
acpi(4), acpi_video(4), sysctl.conf(5), sysctl(8)
The acpi4asus Project, http://sourceforge.net/projects/acpi4asus/.
The acpi_asus driver first appeared in FreeBSD 5.3.
The acpi_asus driver and this manual page were written by Philip Paeps
Inspiration came from the acpi4asus project started by Julien Lerouge
which maintains a driver implementing this functionality in the Linux