2 .\" Copyright (c) 2004 Philip Paeps <philip@FreeBSD.org>
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
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14 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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26 .\" $FreeBSD: src/share/man/man4/acpi_asus.4,v 1.3 2008/08/21 00:40:55 rpaulo Exp $
33 .Nd Asus Laptop Extras
35 To compile this driver into the kernel,
36 place the following line in your
37 kernel configuration file:
38 .Bd -ragged -offset indent
39 .Cd "device acpi_asus"
42 Alternatively, to load the driver as a
43 module at boot time, place the following line in
45 .Bd -literal -offset indent
51 driver provides support for the extra ACPI-controlled gadgets, such as hotkeys
52 and leds, found on recent Asus (and Medion) laptops.
53 It allows one to use the
55 interface to manipulate the brightness of the LCD panel and the display output
57 Hotkey events are passed to
59 for easy handling in userspace.
61 Currently, the following Asus laptops are fully supported:
63 .Bl -item -offset indent -compact
122 also supports the Asus-compatible
128 The following sysctls are currently implemented:
129 .Bl -tag -width indent
130 .It Va hw.acpi.asus.lcd_brightness
131 Makes the LCD backlight brighter or dimmer (higher values are brighter).
132 .It Va hw.acpi.asus.lcd_backlight
133 Turns the LCD backlight on or off.
134 .It Va hw.acpi.asus.video_output
135 Sets the active display to use according to a bitwise OR of the following:
137 .Bl -tag -width indent -compact
148 Some models also support video switching via the generic
151 Most models do not, however.
154 Defaults for these variables can be set in
156 which is parsed at boot-time.
163 .%T The acpi4asus Project
164 .%O http://sourceforge.net/projects/acpi4asus/
169 driver first appeared in
175 driver and this manual page were written by
176 .An Philip Paeps Aq philip@FreeBSD.org .
178 Inspiration came from the
179 .Em acpi4asus project
182 which maintains a driver implementing this