Date: Sat, 10 May 2014 03:24:46 +0000 (UTC) From: Warren Block <wblock@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r265798 - head/share/man/man4 Message-ID: <201405100324.s4A3Okgc048998@svn.freebsd.org>
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Author: wblock (doc committer) Date: Sat May 10 03:24:45 2014 New Revision: 265798 URL: http://svnweb.freebsd.org/changeset/base/265798 Log: Add a man page for the new vt.4 device. Reviewed by: ray, emaste (slightly earlier version) Added: head/share/man/man4/vt.4 (contents, props changed) Added: head/share/man/man4/vt.4 ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/share/man/man4/vt.4 Sat May 10 03:24:45 2014 (r265798) @@ -0,0 +1,230 @@ +.\" Copyright (c) 2014 Warren Block +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd May 9, 2014 +.Dt VIRTUAL TERMINALS 4 +.Os +.Sh NAME +.Nm vt +.Nd virtual terminal console driver +.Sh SYNOPSIS +.Cd "options VT_MAXWINDOWS=N" +.Cd "options VT_ALT_TO_ESC_HACK=1" +.Cd "options VT_TWOBUTTON_MOUSE" +.Cd "options VT_FB_DEFAULT_WIDTH=X" +.Cd "options VT_FB_DEFAULT_HEIGHT=Y" +.Cd "options SC_NO_CUTPASTE" +.Cd "options SC_NO_SYSMOUSE" +.Cd "device vt" +.Pp +In +.Xr loader.conf 5 : +.Cd hw.vga.textmode=1 +.Sh DESCRIPTION +The +.Nm +device provides multiple virtual terminals with an extensive feature +set: +.Bl -item -offset indent +.It +Unicode UTF-8 text with double-width characters. +.It +Large font maps in graphics mode, including support for Asian +character sets. +.It +Graphics-mode consoles. +.It +Integration with +KMS +.Pq Kernel Mode Setting +video drivers for switching between the +.Em X Window System +and virtual terminals. +.El +.Ss Virtual Terminals +Multiple virtual terminals are provided on a single computer. +Up to sixteen virtual terminals can be defined. +A single virtual terminal is connected to the screen and keyboard +at a time. +Key combinations are used to select a virtual terminal. +Alt-F1 through Alt-F12 correspond to the first twelve virtual terminals. +If more than twelve virtual terminals are created, Shift-Alt-F1 through +Shift-Alt-F4 are used to switch to the additional terminals. +.Ss Copying and Pasting Text with a Mouse +Copying and pasting text from the screen with a mouse is supported. +Press and hold down mouse button 1, usually the left button, while +moving the mouse to select text. +Selected text is highlighted with reversed foreground and background +colors. +To select more text after releasing mouse button 1, press mouse button +3, usually the right button. +To paste text that has been selected, press mouse button 2, usually the +middle button. +The text is entered as if it were typed at the keyboard. +The +.Dv VT_TWOBUTTON_MOUSE +kernel option can be used with mice that only have two buttons. +Setting this option makes the second mouse button into the +paste button. +See +.Xr moused 8 +for more information. +.Ss Scrolling Back +Output that has scrolled off the screen can be reviewed by pressing the +Scroll Lock key, then scrolling up and down with the arrow keys. +The Page Up and Page Down keys scroll up or down a full screen at a +time. +The Home and End keys jump to the beginning or end of the scrollback +buffer. +When finished reviewing, press the Scroll Lock key again to return to +normal use. +.Sh DRIVER CONFIGURATION +.Ss Kernel Configuration Options +These kernel options control the +.Nm +driver. +.Bl -tag -width MAXCONS +.It Dv VT_MAXWINDOWS=N +Set the number of virtual terminals to be created to +.Fa N . +The value defaults to 12. +.It Dv VT_ALT_TO_ESC_HACK=1 +When the Alt key is held down while pressing another key, send an ESC +sequence instead of the Alt key. +.It Dv VT_TWOBUTTON_MOUSE +If defined, swap the functions of mouse buttons 2 and 3. +In effect, this makes the right-hand mouse button perform a paste. +These options are checked in the order shown. +.It Dv SC_NO_CUTPASTE +Disable mouse support. +.It VT_FB_DEFAULT_WIDTH=X +Set the default width to +.Fa X . +.It VT_FB_DEFAULT_HEIGHT=Y +Set the default height to +.Fa Y . +.El +.Sh BACKWARDS COMPATIBILITY +Several options are provided for compatibility with the previous +console device, +.Xr sc 4 . +These options will be removed in a future +.Fx +version. +.Bl -column -offset indent ".Sy vt VT_TWOBUTTON_MOUSE" ".Sy SC_TWOBUTTON_MOUSE" +.It Sy vt Option Name Ta Sy sc Option Name +.It Dv VT_TWOBUTTON_MOUSE Ta Dv SC_TWOBUTTON_MOUSE +.It Dv VT_MAXWINDOWS Ta Dv MAXCONS +.It none Ta Dv SC_NO_CUTPASTE +.It none Ta Dv SC_NO_SYSMOUSE +.El +.Sh START-UP OPERATION WITH X86 BIOS SYSTEMS +The computer BIOS starts in text mode, and +the +.Fx +.Xr loader 8 +runs, loading the kernel. +If +.Va hw.vga.textmode +is set, the system remains in text mode. +Otherwise, +.Nm +switches to 640x480x16 VGA mode using +.Fn vt_vga . +If a KMS +.Pq Kernel Mode Switching +video driver is available, the display is switched to high resolution +and the KMS driver takes over. +When a KMS driver is not available, +.Fn vt_vga +remains active. +.Sh LOADER TUNABLES +These settings can be entered at the +.Xr loader 8 +prompt or in +.Xr loader.conf 5 . +.Bl -tag -width indent +.It Va hw.vga.textmode +Set to 1 to use virtual terminals in text mode instead of graphics mode. +Features that require graphics mode, like loadable fonts, will be +disabled. +.El +.Sh FILES +.Bl -tag -width /usr/share/syscons/keymaps/* -compact +.It Pa /dev/console +.It Pa /dev/consolectl +.It Pa /dev/ttyv* +virtual terminals +.It Pa /etc/ttys +terminal initialization information +.El +.Sh SEE ALSO +.Xr kbdcontrol 1 , +.Xr login 1 , +.Xr vidcontrol 1 , +.Xr atkbd 4 , +.Xr atkbdc 4 , +.Xr keyboard 4 , +.Xr screen 4 , +.Xr splash 4 , +.Xr syscons 4 , +.Xr ukbd 4 , +.Xr vga 4 , +.Xr kbdmap 5 , +.Xr rc.conf 5 , +.Xr ttys 5 , +.Xr config 8 , +.Xr getty 8 , +.Xr kbdmux 8 , +.Xr kldload 8 , +.Xr moused 8 +.\" WB: to be uncommented when an actual release contains vt(4) +.\" .Sh HISTORY +.\" The +.\" Nm +.\" driver first appeared in +.\" .Fx 9.3 . +.Sh AUTHORS +.An -nosplit +The +.Nm +device driver was developed by +.An Ed Schouten Aq ed@FreeBSD.org , +.An Ed Maste Aq emaste@FreeBSD.org , +and +.An Aleksandr Rybalko Aq ray@FreeBSD.org , +with sponsorship provided by the +.Fx +Foundation. +This manual page was written by +.An Warren Block <wblock@FreeBSD.org>. +.Sh CAVEATS +Paste buffer size is limited by the system value +.Brq Dv MAX_INPUT , +the number of bytes that can be stored in the terminal +input queue, usually 1024 bytes +(see +.Xr termios 4 ) .
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