mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
449d10e56e
to be used with eg "vidcontrol -s". Reviewed by: emaste@ MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D4968
583 lines
13 KiB
Groff
583 lines
13 KiB
Groff
.\"
|
|
.\" vidcontrol - a utility for manipulating the syscons or vt video driver
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" @(#)vidcontrol.1
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 19, 2016
|
|
.Dt VIDCONTROL 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm vidcontrol
|
|
.Nd system console control and configuration utility
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl CdLHPpx
|
|
.Op Fl b Ar color
|
|
.Op Fl c Ar appearance
|
|
.Oo
|
|
.Fl f
|
|
.Oo
|
|
.Op Ar size
|
|
.Ar file
|
|
.Oc
|
|
.Oc
|
|
.Op Fl g Ar geometry
|
|
.Op Fl h Ar size
|
|
.Op Fl i Cm active | adapter | mode
|
|
.Op Fl l Ar screen_map
|
|
.Op Fl M Ar char
|
|
.Op Fl m Cm on | off
|
|
.Op Fl r Ar foreground Ar background
|
|
.Op Fl S Cm on | off
|
|
.Op Fl s Ar number
|
|
.Op Fl T Cm xterm | cons25
|
|
.Op Fl t Ar N | Cm off
|
|
.Op Ar mode
|
|
.Op Ar foreground Op Ar background
|
|
.Op Cm show
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility is used to set various options for the
|
|
.Xr syscons 4
|
|
or
|
|
.Xr vt 4
|
|
console driver,
|
|
such as video mode, colors, cursor shape, screen output map, font and screen
|
|
saver timeout.
|
|
Only a small subset of options is supported by
|
|
.Xr vt 4 .
|
|
Unsupported options lead to error messages, typically including
|
|
the text "Inappropriate ioctl for device".
|
|
.Pp
|
|
The following command line options are supported:
|
|
.Bl -tag -width indent
|
|
.It Ar mode
|
|
Select a new video mode.
|
|
The modes currently recognized are:
|
|
.Ar 80x25 ,
|
|
.Ar 80x30 ,
|
|
.Ar 80x43 ,
|
|
.Ar 80x50 ,
|
|
.Ar 80x60 ,
|
|
.Ar 132x25 ,
|
|
.Ar 132x30 ,
|
|
.Ar 132x43 ,
|
|
.Ar 132x50 ,
|
|
.Ar 132x60 ,
|
|
.Ar VGA_40x25 ,
|
|
.Ar VGA_80x25 ,
|
|
.Ar VGA_80x30 ,
|
|
.Ar VGA_80x50 ,
|
|
.Ar VGA_80x60 ,
|
|
.Ar VGA_90x25 ,
|
|
.Ar VGA_90x30 ,
|
|
.Ar VGA_90x43 ,
|
|
.Ar VGA_90x50 ,
|
|
.Ar VGA_90x60 ,
|
|
.Ar EGA_80x25 ,
|
|
.Ar EGA_80x43 ,
|
|
.Ar VESA_132x25 ,
|
|
.Ar VESA_132x43 ,
|
|
.Ar VESA_132x50 ,
|
|
.Ar VESA_132x60 .
|
|
.\"The graphic mode
|
|
.\".Ar VGA_320x200
|
|
.\"and
|
|
The raster text mode
|
|
.Ar VESA_800x600
|
|
can also be chosen.
|
|
Alternatively, a mode can be specified with its number by using a mode name of
|
|
the form
|
|
.Li MODE_ Ns Aq Ar NUMBER .
|
|
A list of valid mode numbers can be obtained with the
|
|
.Fl i Cm mode
|
|
option.
|
|
See
|
|
.Sx Video Mode Support
|
|
below.
|
|
.It Ar foreground Op Ar background
|
|
Change colors when displaying text.
|
|
Specify the foreground color
|
|
(e.g.\&
|
|
.Dq vidcontrol white ) ,
|
|
or both a foreground and background colors
|
|
(e.g.\&
|
|
.Dq vidcontrol yellow blue ) .
|
|
Use the
|
|
.Cm show
|
|
command below to see available colors.
|
|
.It Cm show
|
|
See the supported colors on a given platform.
|
|
.It Fl b Ar color
|
|
Set border color to
|
|
.Ar color .
|
|
This option may not be always supported by the video driver.
|
|
.It Fl C
|
|
Clear the history buffer.
|
|
.It Fl c Cm normal | blink | destructive
|
|
Change the cursor appearance.
|
|
The cursor is either an inverting block
|
|
.Pq Cm normal
|
|
that can optionally
|
|
.Cm blink ,
|
|
or it can be like the old hardware cursor
|
|
.Pq Cm destructive .
|
|
The latter is actually a simulation.
|
|
.It Fl d
|
|
Print out current output screen map.
|
|
.It Xo
|
|
.Fl f
|
|
.Oo
|
|
.Op Ar size
|
|
.Ar file
|
|
.Oc
|
|
.Xc
|
|
Load font
|
|
.Ar file
|
|
for
|
|
.Ar size
|
|
(currently, only
|
|
.Cm 8x8 ,
|
|
.Cm 8x14
|
|
or
|
|
.Cm 8x16 ) .
|
|
The font file can be either uuencoded or in raw binary format.
|
|
You can also use the menu-driven
|
|
.Xr vidfont 1
|
|
command to load the font of your choice.
|
|
.Pp
|
|
.Ar Size
|
|
may be omitted, in this case
|
|
.Nm
|
|
will try to guess it from the size of font file.
|
|
.Pp
|
|
When using
|
|
.Xr vt 4
|
|
both
|
|
.Ar size
|
|
and
|
|
.Ar font
|
|
can be omitted, and the default font will be loaded.
|
|
.Pp
|
|
Note that older video cards, such as MDA and CGA, do not support
|
|
software font.
|
|
See also
|
|
.Sx Video Mode Support
|
|
and
|
|
.Sx EXAMPLES
|
|
below and the man page for either
|
|
.Xr syscons 4
|
|
or
|
|
.Xr vt 4
|
|
(depending on which driver you use).
|
|
.It Fl g Ar geometry
|
|
Set the
|
|
.Ar geometry
|
|
of the text mode for the modes with selectable
|
|
geometry.
|
|
Currently only raster modes, such as
|
|
.Ar VESA_800x600 ,
|
|
support this option.
|
|
See also
|
|
.Sx Video Mode Support
|
|
and
|
|
.Sx EXAMPLES
|
|
below.
|
|
.It Fl h Ar size
|
|
Set the size of the history (scrollback) buffer to
|
|
.Ar size
|
|
lines.
|
|
.It Fl i Cm active
|
|
Shows the active vty number.
|
|
.It Fl i Cm adapter
|
|
Shows info about the current video adapter.
|
|
.It Fl i Cm mode
|
|
Shows the possible video modes with the current video hardware.
|
|
.It Fl l Ar screen_map
|
|
Install screen output map file from
|
|
.Ar screen_map .
|
|
See also
|
|
.Xr syscons 4
|
|
or
|
|
.Xr vt 4
|
|
(depending on which driver you use).
|
|
.It Fl L
|
|
Install default screen output map.
|
|
.It Fl M Ar char
|
|
Sets the base character used to render the mouse pointer to
|
|
.Ar char .
|
|
.It Fl m Cm on | off
|
|
Switch the mouse pointer
|
|
.Cm on
|
|
or
|
|
.Cm off .
|
|
Used together with the
|
|
.Xr moused 8
|
|
daemon for text mode cut & paste functionality.
|
|
.It Fl p
|
|
Capture the current contents of the video buffer corresponding
|
|
to the terminal device referred to by standard input.
|
|
The
|
|
.Nm
|
|
utility writes contents of the video buffer to the standard
|
|
output in a raw binary format.
|
|
For details about that
|
|
format see
|
|
.Sx Format of Video Buffer Dump
|
|
below.
|
|
.It Fl P
|
|
Same as
|
|
.Fl p ,
|
|
but dump contents of the video buffer in a plain text format
|
|
ignoring nonprintable characters and information about text
|
|
attributes.
|
|
.It Fl H
|
|
When used with
|
|
.Fl p
|
|
or
|
|
.Fl P ,
|
|
it instructs
|
|
.Nm
|
|
to dump full history buffer instead of visible portion of
|
|
the video buffer only.
|
|
.It Fl r Ar foreground background
|
|
Change reverse mode colors to
|
|
.Ar foreground
|
|
and
|
|
.Ar background .
|
|
.It Fl S Cm on | off
|
|
Turn vty switching on or off.
|
|
When vty switching is off,
|
|
attempts to switch to a different virtual terminal will fail.
|
|
(The default is to permit vty switching.)
|
|
This protection can be easily bypassed when the kernel is compiled with
|
|
the
|
|
.Dv DDB
|
|
option.
|
|
However, you probably should not compile the kernel debugger on a box which
|
|
is supposed to be physically secure.
|
|
.It Fl s Ar number
|
|
Set the active vty to
|
|
.Ar number .
|
|
.It Fl T Cm xterm | cons25
|
|
Switch between xterm and cons25 style terminal emulation.
|
|
.It Fl t Ar N | Cm off
|
|
Set the screensaver timeout to
|
|
.Ar N
|
|
seconds, or turns it
|
|
.Cm off .
|
|
.It Fl x
|
|
Use hexadecimal digits for output.
|
|
.El
|
|
.Ss Video Mode Support
|
|
Note that not all modes listed above may be supported by the video
|
|
hardware.
|
|
You can verify which mode is supported by the video hardware, using the
|
|
.Fl i Cm mode
|
|
option.
|
|
.Pp
|
|
The VESA BIOS support must be linked to the kernel
|
|
or loaded as a KLD module if you wish to use VESA video modes
|
|
or 132 column modes
|
|
(see
|
|
.Xr vga 4 ) .
|
|
.Pp
|
|
You need to compile your kernel with the
|
|
.Ar VGA_WIDTH90
|
|
option if you wish to use VGA 90 column modes
|
|
(see
|
|
.Xr vga 4 ) .
|
|
.Pp
|
|
Video modes other than 25 and 30 line modes may require specific size of font.
|
|
Use
|
|
.Fl f
|
|
option above to load a font file to the kernel.
|
|
If the required size of font has not been loaded to the kernel,
|
|
.Nm
|
|
will fail if the user attempts to set a new video mode.
|
|
.Pp
|
|
.Bl -column "25 line modes" "8x16 (VGA), 8x14 (EGA)" -compact
|
|
.Sy Modes Ta Sy Font size
|
|
.No 25 line modes Ta 8x16 (VGA), 8x14 (EGA)
|
|
.No 30 line modes Ta 8x16
|
|
.No 43 line modes Ta 8x8
|
|
.No 50 line modes Ta 8x8
|
|
.No 60 line modes Ta 8x8
|
|
.El
|
|
.Pp
|
|
It is better to always load all three sizes (8x8, 8x14 and 8x16)
|
|
of the same font.
|
|
.Pp
|
|
You may set variables in
|
|
.Pa /etc/rc.conf
|
|
or
|
|
.Pa /etc/rc.conf.local
|
|
so that desired font files will be automatically loaded
|
|
when the system starts up.
|
|
See below.
|
|
.Pp
|
|
If you want to use any of the raster text modes you need to recompile your
|
|
kernel with the
|
|
.Dv SC_PIXEL_MODE
|
|
option.
|
|
See
|
|
.Xr syscons 4
|
|
or
|
|
.Xr vt 4
|
|
(depending on which driver you use)
|
|
for more details on this kernel option.
|
|
.Ss Format of Video Buffer Dump
|
|
The
|
|
.Nm
|
|
utility uses the
|
|
.Xr syscons 4
|
|
.\" is it supported on vt(4)???
|
|
or
|
|
.Xr vt 4
|
|
.Dv CONS_SCRSHOT
|
|
.Xr ioctl 2
|
|
to capture the current contents of the video buffer.
|
|
The
|
|
.Nm
|
|
utility writes version and additional information to the standard
|
|
output, followed by the contents of the video buffer.
|
|
.Pp
|
|
VGA video memory is typically arranged in two byte tuples,
|
|
one per character position.
|
|
In each tuple, the first byte will be the character code,
|
|
and the second byte is the character's color attribute.
|
|
.Pp
|
|
The VGA color attribute byte looks like this:
|
|
.Bl -column "X:X" "<00000000>" "width" "bright foreground color"
|
|
.Sy "bits# width meaning"
|
|
.Li "7 <X0000000> 1 character blinking"
|
|
.Li "6:4 <0XXX0000> 3 background color"
|
|
.Li "3 <0000X000> 1 bright foreground color"
|
|
.Li "2:0 <00000XXX> 3 foreground color"
|
|
.El
|
|
.Pp
|
|
Here is a list of the three bit wide base colors:
|
|
.Pp
|
|
.Bl -hang -offset indent -compact
|
|
.It 0
|
|
Black
|
|
.It 1
|
|
Blue
|
|
.It 2
|
|
Green
|
|
.It 3
|
|
Cyan
|
|
.It 4
|
|
Red
|
|
.It 5
|
|
Magenta
|
|
.It 6
|
|
Brown
|
|
.It 7
|
|
Light Grey
|
|
.El
|
|
.Pp
|
|
Base colors with bit 3 (the bright foreground flag) set:
|
|
.Pp
|
|
.Bl -hang -offset indent -compact
|
|
.It 0
|
|
Dark Grey
|
|
.It 1
|
|
Light Blue
|
|
.It 2
|
|
Light Green
|
|
.It 3
|
|
Light Cyan
|
|
.It 4
|
|
Light Red
|
|
.It 5
|
|
Light Magenta
|
|
.It 6
|
|
Yellow
|
|
.It 7
|
|
White
|
|
.El
|
|
.Pp
|
|
For example, the two bytes
|
|
.Pp
|
|
.Dl "65 158"
|
|
.Pp
|
|
specify an uppercase A (character code 65), blinking
|
|
(bit 7 set) in yellow (bits 3:0) on a blue background
|
|
(bits 6:4).
|
|
.Pp
|
|
The
|
|
.Nm
|
|
output contains a small header which includes additional
|
|
information which may be useful to utilities processing
|
|
the output.
|
|
.Pp
|
|
The first 10 bytes are always arranged as follows:
|
|
.Bl -column "Byte range" "Contents" -offset indent
|
|
.It Sy "Byte Range Contents"
|
|
.It "1 thru 8 Literal text" Dq Li SCRSHOT_
|
|
.It "9 File format version number"
|
|
.It "10 Remaining number of bytes in the header"
|
|
.El
|
|
.Pp
|
|
Subsequent bytes depend on the version number.
|
|
.Bl -column "Version" "13 and up" -offset indent
|
|
.It Sy "Version Byte Meaning"
|
|
.It "1 11 Terminal width, in characters"
|
|
.It " 12 Terminal depth, in characters"
|
|
.It " 13 and up The snapshot data"
|
|
.El
|
|
.Pp
|
|
So a dump of an 80x25 screen would start (in hex)
|
|
.Bd -literal -offset indent
|
|
53 43 52 53 48 4f 54 5f 01 02 50 19
|
|
----------------------- -- -- -- --
|
|
| | | | ` 25 decimal
|
|
| | | `--- 80 decimal
|
|
| | `------ 2 remaining bytes of header data
|
|
| `--------- File format version 1
|
|
`------------------------ Literal "SCRSHOT_"
|
|
.Ed
|
|
.Sh VIDEO OUTPUT CONFIGURATION
|
|
.Ss Boot Time Configuration
|
|
You may set the following variables in
|
|
.Pa /etc/rc.conf
|
|
or
|
|
.Pa /etc/rc.conf.local
|
|
in order to configure the video output at boot time.
|
|
.Pp
|
|
.Bl -tag -width foo_bar_var -compact
|
|
.It Ar blanktime
|
|
Sets the timeout value for the
|
|
.Fl t
|
|
option.
|
|
.It Ar font8x16 , font8x14 , font8x8
|
|
Specifies font files for the
|
|
.Fl f
|
|
option.
|
|
.It Ar scrnmap
|
|
Specifies a screen output map file for the
|
|
.Fl l
|
|
option.
|
|
.El
|
|
.Pp
|
|
See
|
|
.Xr rc.conf 5
|
|
for more details.
|
|
.Ss Driver Configuration
|
|
The video card driver may let you change default configuration
|
|
options, such as the default font, so that you do not need to set up
|
|
the options at boot time.
|
|
See video card driver manuals, (e.g.\&
|
|
.Xr vga 4 )
|
|
for details.
|
|
.Sh FILES
|
|
.Bl -tag -width /usr/share/syscons/scrnmaps/foo-bar -compact
|
|
.It Pa /usr/share/syscons/fonts/*
|
|
.It Pa /usr/share/vt/fonts/*
|
|
font files.
|
|
.It Pa /usr/share/syscons/scrnmaps/*
|
|
screen output map files (relevant for
|
|
.Xr syscons 4
|
|
only).
|
|
.El
|
|
.Sh EXAMPLES
|
|
If you want to load
|
|
.Pa /usr/share/syscons/fonts/iso-8x16.fnt
|
|
to the kernel, run
|
|
.Nm
|
|
as:
|
|
.Pp
|
|
.Dl vidcontrol -f 8x16 /usr/share/syscons/fonts/iso-8x16.fnt
|
|
.Pp
|
|
So long as the font file is in
|
|
.Pa /usr/share/syscons/fonts
|
|
(if using syscons) or
|
|
.Pa /usr/share/vt/fonts
|
|
(if using vt),
|
|
you may abbreviate the file name as
|
|
.Pa iso-8x16 :
|
|
.Pp
|
|
.Dl vidcontrol -f 8x16 iso-8x16
|
|
.Pp
|
|
Furthermore, you can also omit font size
|
|
.Dq Li 8x16 :
|
|
.Pp
|
|
.Dl vidcontrol -f iso-8x16
|
|
.Pp
|
|
Moreover, the suffix specifying the font size can be also omitted; in
|
|
this case,
|
|
.Nm
|
|
will use the size of the currently displayed font to construct the
|
|
suffix:
|
|
.Pp
|
|
.Dl vidcontrol -f iso
|
|
.Pp
|
|
Likewise, you can also abbreviate the screen output map file name for
|
|
the
|
|
.Fl l
|
|
option if the file is found in
|
|
.Pa /usr/share/syscons/scrnmaps .
|
|
.Pp
|
|
.Dl vidcontrol -l iso-8859-1_to_cp437
|
|
.Pp
|
|
The above command will load
|
|
.Pa /usr/share/syscons/scrnmaps/iso-8859-1_to_cp437.scm .
|
|
.Pp
|
|
The following command will set-up a 100x37 raster text mode (useful for
|
|
some LCD models):
|
|
.Pp
|
|
.Dl vidcontrol -g 100x37 VESA_800x600
|
|
.Pp
|
|
The following command will capture the contents of the first virtual
|
|
terminal video buffer, and redirect the output to the
|
|
.Pa shot.scr
|
|
file:
|
|
.Pp
|
|
.Dl vidcontrol -p < /dev/ttyv0 > shot.scr
|
|
.Pp
|
|
The following command will dump contents of the fourth virtual terminal
|
|
video buffer
|
|
to the standard output in the human readable format:
|
|
.Pp
|
|
.Dl vidcontrol -P < /dev/ttyv3
|
|
.Sh SEE ALSO
|
|
.Xr kbdcontrol 1 ,
|
|
.Xr vidfont 1 ,
|
|
.Xr keyboard 4 ,
|
|
.Xr screen 4 ,
|
|
.Xr syscons 4 ,
|
|
.Xr vga 4 ,
|
|
.Xr vt 4 ,
|
|
.Xr rc.conf 5 ,
|
|
.Xr kldload 8 ,
|
|
.Xr moused 8 ,
|
|
.Xr watch 8
|
|
.Pp
|
|
The various
|
|
.Pa scr2*
|
|
utilities in the
|
|
.Pa graphics
|
|
and
|
|
.Pa textproc
|
|
categories of the
|
|
.Em "Ports Collection" .
|
|
.Sh AUTHORS
|
|
.An S\(/oren Schmidt Aq Mt sos@FreeBSD.org
|
|
.An Sascha Wildner Aq Mt saw@online.de
|
|
.Sh CONTRIBUTORS
|
|
.An -split
|
|
.An Maxim Sobolev Aq Mt sobomax@FreeBSD.org
|
|
.An Nik Clayton Aq Mt nik@FreeBSD.org
|