How do I use a console resolution of 80x50?

How do I use a console resolution of 80x50? (amd64, i386)
amd64 and i386 users normally get a console screen of 25 lines of 80 characters.
However, many VGA video cards are capable of displaying a higher
text resolution of 50 lines of 80 characters.  
First, a font that supports the desired resolution must be loaded using
the
wsfontload(8)
command.  The standard 80x25 text screen uses 8x16 pixel fonts;
to double the number of lines we will have to use 8x8 pixel fonts.
After that, we will have to delete and recreate a
virtual console
at the desired screen
resolution, using the
wsconscfg(8)
command.
This can be done automatically at boot by adding the following lines to
the end of your
rc.local(8)
file:
wsfontload -h 8 -e ibm /usr/share/misc/pcvtfonts/vt220l.808
wsconscfg -dF 5
wsconscfg -t 80x50 5
As with any modification to your system configuration, it is
recommended you spend some time with the man pages to understand what
these commands do.
The first line above loads the 8x8 font.  The second line deletes screen
5 (which would be accessed by [CTRL]+[ALT]+[F6]).  The third
line creates a new screen 5 with 50 lines of 80
characters each.  If you do this, you will see your primary screen, and
the other three default virtual consoles, come up in the standard 80x25
mode, but a new screen 5 at 80x50 accessible through [CTRL]+[ALT]+[F6].
Remember that [CTRL]+[ALT]+[F1] is screen 0 (ttyC0).
If you wish to alter other screens,
simply repeat the delete and add screen steps
for whichever screens you want running at the 80x50 resolution.
You should avoid changing screen 4 (ttyC4, [CTRL]+[ALT]+[F5]),
which is used by X as a graphical screen.  It is also not possible to
change the resolution of the primary console device (i.e., ttyC0).
As one might expect, all these commands can also be entered at the
command prompt, as root, or (better) using
sudo(8)
.
Note: this will not work on all video cards.  Unfortunately, not
all video cards support the uploaded fonts that
wscons(4)
requires to achieve the 80x50 text mode.  In these cases, you might wish
to consider running X
(port from:openbsd FAQ)


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/2962/showart_43826.html

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