From sjuranic@u.washington.edu Tue Apr 17 11:29:42 2001
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Date: Tue, 17 Apr 2001 11:29:38 -0700 (PDT)
From: "'Steve' Stephen W. Juranich" <sjuranic@u.washington.edu>
To: UW Linux Group <linux@u.washington.edu>
Subject: Re: Color-depth in X-windows, want >8-bit
In-Reply-To: <3ADB3BF7.2AC859E6@u.washington.edu>
Message-ID: <Pine.A41.4.33.0104171123090.89116-100000@dante39.u.washington.edu>
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On Mon, 16 Apr 2001, Jesse Rehr wrote:

> (A) Configure X so that it can run 1024x768x24bit and other screens are
> kept in extended memory or just somewhere else while not being used.
> (B) Configure the virtual desktops to 512x384x24bit and view all four at
> once.
> (C) Run just one virtual terminal.
> (D) Something else smarter that gets me full 1024x768x24 resolution.
>

Take a look at your XF86Config file (mine is under /etc/X11, but yours may
be different).  Way, way, way down the file you'll see a section called
"Screen".  You will then see a bunch of crap that defines the different
video modes available.  For example, mine looks like:

Section "Screen"
    Driver      "accel"
    Device      "My Video Card"
    Monitor     "My Monitor"
##    Subsection "Display"
##        Depth       8
##        Modes       "640x480" "800x600" "1024x768" "1280x1024"
##        ViewPort    0 0
##    EndSubsection
##    Subsection "Display"
##        Depth       16
##        Modes       "640x480" "800x600" "1024x768" "1280x1024"
##        ViewPort    0 0
##    EndSubsection
##    Subsection "Display"
##        Depth       24
##        Modes       "640x480" "800x600" "1024x768" "1280x1024"
##        ViewPort    0 0
##    EndSubsection
    Subsection "Display"
        Depth       32
        Modes       "1280x1024" "1024x768" "800x600"
        ViewPort    0 0
    EndSubsection
EndSection

As you can see, I'm really only interested in one video mode, so I have most
of the stuff commented out, but you can do whatever you want.  The entry
you're having trouble with is the "Depth" entry.  Just change that to
whatever you want.  As long as your vidcard has enough memory, there
shouldn't be any problem.  Whatever "Display" definition you have first in
your XF86Config file is first will be the default.  The others can be
switched to by <CTL>+<ALT>+<KB+> and <CTL>+<ALT>+<KB->.  Of course, after
chainging these definitions you'll need to restart your X server with the
<CTL>+<ALT>+<BKSPC>

HTH

----------------------------------------------------------------------
Stephen W. Juranich                         sjuranic@ee.washington.edu
Electrical Engineering         http://students.washington.edu/sjuranic
University of Washington                 http://ssli.ee.washington.edu


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