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Date: Fri, 11 Oct 1996 08:00:40 -0500 (CDT)
Message-Id: <199610111300.IAA04280@plethora.cs.wustl.edu>
From: James Hu <jxh@cs.wustl.edu>
To: Song Lining <sln@public.jn.sd.cn>
Cc: questions@freebsd.org
Subject: change actual screen size
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References: <325E9191.41C67EA6@public.jn.sd.cn>
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Song Lining <sln@public.jn.sd.cn> writes:
> Hi,
> I installed XFree86 but the screen is bigger than the actual one. My
> question is how can I change it to the actual size?
> Thanks in advance!
> Song lining

The answers I have seen posted say to edit your /etc/XF86Config file
(the Modes line of the Display subsection of the Screen section).
Another way is to invoke X using more bits per plane for color.

        startx -- "-bpp 15"
or      startx -- "-bpp 16"
or      startx -- "-bpp 32"

instead of the default 8.

-- James