acpi_asus — Asus Laptop Extras

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

       Inspiration came from  the  acpi4asusproject  started  by  Julien  Lerouge  which  maintains  a  driver
       implementing this functionality in the Linux kernel.

Debian                                          February 8, 2010                                    ACPI_ASUS(4)

       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  SamsungP30/P35
       laptops.

       The acpi_asus driver first appeared in FreeBSD 5.3.

       acpi_asus — Asus Laptop Extras

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

       Theacpi4asusProject, http://sourceforge.net/projects/acpi4asus/.

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

             deviceacpi_asus

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

             acpi_asus_load="YES"

       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.