1.\" $OpenBSD: acpibtn.4,v 1.5 2013/07/16 16:05:48 schwarze Exp $ 2.\" 3.\" Copyright (c) 2006 Michael Knudsen <mk@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: July 16 2013 $ 18.Dt ACPIBTN 4 19.Os 20.Sh NAME 21.Nm acpibtn 22.Nd ACPI button 23.Sh SYNOPSIS 24.Cd "acpibtn* at acpi?" 25.Sh DESCRIPTION 26The 27.Nm 28driver is used to handle the event triggered when the user presses an ACPI 29button. 30Currently, the only event handled is the press of a power button which 31causes the system to perform a regular system shutdown and power off the 32machine if the 33.Va hw.allowpowerdown 34.Xr sysctl 8 35is set to 1. 36.Sh SEE ALSO 37.Xr acpi 4 , 38.Xr intro 4 39.Sh HISTORY 40The 41.Nm 42driver first appeared in 43.Ox 3.9 . 44.Sh AUTHORS 45.An -nosplit 46The 47.Nm 48driver was written by 49.An Marco Peereboom Aq Mt marco@openbsd.org . 50