108 lines
3.6 KiB
Groff
108 lines
3.6 KiB
Groff
.\" $NetBSD: screenblank.1,v 1.8 2000/11/07 06:43:38 lukem Exp $
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.\"
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.\" Copyright (c) 1996 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jason R. Thorpe.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd June 7, 1995
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.Dt SCREENBLANK 1
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.Os
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.Sh NAME
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.Nm screenblank
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.Nd screen saver daemon for wscons and FBIO machines
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.Sh SYNOPSIS
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.Nm screenblank
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.Op Fl k | Fl m
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.Op Fl d Ar timeout
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.Op Fl e Ar timeout
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.Op Fl f Ar framebuffer
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.Sh DESCRIPTION
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.Nm
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disables the framebuffer if the keyboard and mouse are idle for a period
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of time, and re-enables the framebuffer when keyboard or mouse activity
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resumes.
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.Pp
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When killed with a SIGINT, SIGHUP, or SIGTERM,
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.Nm
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will re-enable the framebuffer. The pid can be found in the file
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.Pa /var/run/screenblank.pid .
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl k
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Do not check the keyboard for activity.
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.It Fl m
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Do not check the mouse for activity.
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.It Fl d Ar timeout
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Wait the number of seconds specified by
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.Ar timeout ,
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expressed in the format `xxx.xxx', before disabling the framebuffer due to
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inactivity. The default is 600 seconds (10 minutes).
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.It Fl e Ar timeout
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Wait the number of seconds specified by
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.Ar timeout ,
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expressed in the format `xxx.xxx', before re-enabling the framebuffer once
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activity resumes. The default is .25 seconds.
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.It Fl f Ar framebuffer
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Use the framebuffer device
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.Ar framebuffer
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instead of the default
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.Pa /dev/fb .
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.El
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.Pp
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Note that the
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.Fl k
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and
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.Fl m
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flags are mutually exclusive.
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.Sh FILES
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.Bl -tag -width "/var/run/screenblank.pid "
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.It /dev/kbd
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The keyboard device.
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.It /dev/mouse
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The mouse device.
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.It /dev/console
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The console device.
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.It /dev/fb
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The default framebuffer.
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.It /dev/wskbd0
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The keyboard for wscons machines.
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.It /dev/wsmouse0
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The mouse device for wscons machines.
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.It /dev/ttyE0
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The console device for wscons machines.
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.It /var/run/screenblank.pid
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File containing the pid of
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.Nm "" .
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.El
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