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VIRTUAL	TERMINALS(4)   FreeBSD Kernel Interfaces Manual	  VIRTUAL TERMINALS(4)

NAME
     vt	-- virtual terminal console driver

SYNOPSIS
     options VT_MAXWINDOWS=N
     options VT_ALT_TO_ESC_HACK=1
     options VT_TWOBUTTON_MOUSE
     options VT_FB_DEFAULT_WIDTH=X
     options VT_FB_DEFAULT_HEIGHT=Y
     options SC_NO_CUTPASTE
     options SC_NO_SYSMOUSE
     device vt

     In	loader.conf(5):
     hw.vga.textmode=1

DESCRIPTION
     The vt device provides multiple virtual terminals with an extensive fea-
     ture set:

	   Unicode UTF-8 text with double-width	characters.

	   Large font maps in graphics mode, including support for Asian char-
	   acter sets.

	   Graphics-mode consoles.

	   Integration with KMS	(Kernel	Mode Setting) video drivers for
	   switching between the X Window System and virtual terminals.

   Virtual Terminals
     Multiple virtual terminals	are provided on	a single computer.  Up to six-
     teen virtual terminals can	be defined.  A single virtual terminal is con-
     nected 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.

   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
     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	moused(8) for more information.

   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.

DRIVER CONFIGURATION
   Kernel Configuration	Options
     These kernel options control the vt driver.

     VT_MAXWINDOWS=N
	      Set the number of	virtual	terminals to be	created	to N.  The
	      value defaults to	12.

     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.

     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.

     SC_NO_CUTPASTE
	      Disable mouse support.

     VT_FB_DEFAULT_WIDTH=X
	      Set the default width to X.

     VT_FB_DEFAULT_HEIGHT=Y
	      Set the default height to	Y.

BACKWARDS COMPATIBILITY
     Several options are provided for compatibility with the previous console
     device, sc(4).  These options will	be removed in a	future FreeBSD ver-
     sion.

	   vt Option Name	    sc Option Name
	   VT_TWOBUTTON_MOUSE	    SC_TWOBUTTON_MOUSE
	   VT_MAXWINDOWS	    MAXCONS
	   none			    SC_NO_CUTPASTE
	   none			    SC_NO_SYSMOUSE

START-UP OPERATION WITH	X86 BIOS SYSTEMS
     The computer BIOS starts in text mode, and	the FreeBSD loader(8) runs,
     loading the kernel.  If hw.vga.textmode is	set, the system	remains	in
     text mode.	 Otherwise, vt switches	to 640x480x16 VGA mode using vt_vga().
     If	a KMS (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, vt_vga() remains active.

LOADER TUNABLES
     These settings can	be entered at the loader(8) prompt or in
     loader.conf(5).

     hw.vga.textmode
	     Set to 1 to use virtual terminals in text mode instead of graph-
	     ics mode.	Features that require graphics mode, like loadable
	     fonts, will be disabled.

FILES
     /dev/console
     /dev/consolectl
     /dev/ttyv*			   virtual terminals
     /etc/ttys			   terminal initialization information

SEE ALSO
     kbdcontrol(1), login(1), vidcontrol(1), atkbd(4), atkbdc(4), keyboard(4),
     screen(4),	splash(4), syscons(4), ukbd(4),	vga(4),	kbdmap(5), rc.conf(5),
     ttys(5), config(8), getty(8), kbdmux(8), kldload(8), moused(8)

AUTHORS
     The vt device driver was developed	by Ed Schouten <ed@FreeBSD.org>, Ed
     Maste <emaste@FreeBSD.org>, and Aleksandr Rybalko <ray@FreeBSD.org>, with
     sponsorship provided by the FreeBSD Foundation.  This manual page was
     written by	Warren Block <wblock@FreeBSD.org>.

CAVEATS
     Paste buffer size is limited by the system	value {MAX_INPUT}, the number
     of	bytes that can be stored in the	terminal input queue, usually 1024
     bytes (see	termios(4)).

FreeBSD	9.2			  May 9, 2014			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | DRIVER CONFIGURATION | BACKWARDS COMPATIBILITY | START-UP OPERATION WITH X86 BIOS SYSTEMS | LOADER TUNABLES | FILES | SEE ALSO | AUTHORS | CAVEATS

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