Date: Mon, 10 Nov 2008 13:22:42 -0500 From: John Nielsen <lists@jnielsen.net> To: freebsd-questions@freebsd.org Cc: James Williams <james.williams1952@gmail.com> Subject: Re: Console size and scrollback buffer. Message-ID: <200811101322.42981.lists@jnielsen.net> In-Reply-To: <6cadf1f00811100507r3347e30ft2c7a3ed22f9c049b@mail.gmail.com> References: <6cadf1f00811100507r3347e30ft2c7a3ed22f9c049b@mail.gmail.com>
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On Monday 10 November 2008 08:07:23 am James Williams wrote:
> Hello List,
>
> [On FreeBSD 7.1-BETA2, i386.]
>
> 1) How can I change the number of rowsxcols of the console? I'd like
> to use the maximum rows/cols available for the 1440x900 screen.
In order to use "graphical" VESA modes you need a custom kernel that
includes these options:
options VESA
options SC_PIXEL_MODE
You will only be able to use a 1440x900 resolution if your video hardware
advertises that as a standard VESA mode. Once you are running a kernel
with the above options you can use vidcontrol to list the available
options:
vidcontrol -i mode
When you see a mode you like you can switch to it using vidcontrol again.
For example:
vidcontrol MODE_XX -f 8x8 cp437-8x8.fnt
Replace XX with the number of the mode you'd like to use. Adjust the
arguments to -f to suit your needs. Other sizes are 8x14 and 8x16. You
should choose a font to match the specified size and the character set
you're using. See the manpage for vidcontrol for greater detail.
With a standard kernel you can use "text" modes like 80x50 or even 80x60
to get more rows than the standard 80x25. e.g:
vidcontrol -f 8x8 cp437-8x8.fnt VGA_80x60
> 2) How can these settings be made default (takes effect at boot)?
>
> IOW, what is the equivalent of the "vga=0x365" Linux kernel option?
Use the "allscreens_flags" option in rc.conf. For the text example above
you'd want:
allscreens_flags="-f 8x8 cp437-8x8.fnt VGA_80x60"
Similarly for graphics modes, just include everything you'd include on the
command line to vidcontrol.
> 3) How I can set the scrollback buffer size (if that's the name) of
> the console -- the equivalent of Shift+{PgUp,PgDn} on Linux?
I usually do this via the SC_HISTORY_SIZE kernel option. Scroll-lock can
be used to browse the history in any console virtual terminal.
See the sc(4) manpage for details on this option and the SC_PIXEL_MODE
option mentioned above.
JN
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