The -bpp switch will only have an effect if the cooresponding color
depths are defined in the XF86Config-4 file.  So, if you want to switch
between 8 and 24bpp by invoking X as such: (X ... -bpp 8/24), you'll
need both color depths defined in the config file in your "Screen"
section like so:

Section "Screen"
        Identifier   "Screen0"

...
...
...
        Subsection "Display"
                Depth           8
                Modes           "1024x768" "800x600" "640x480" 
                Viewport        0       0
        EndSubsection

        Subsection "Display"
                Depth           16
                Modes           "1024x768" "800x600" "640x480" 
                Viewport        0       0
        EndSubsection

...
...
...

EndSection

Jeffrey H. Ingber (jhingber _at_ ix.netcom.com)


On Sat, 2001-12-29 at 02:12, Zheng BaoJian wrote:
> Hello:
> I meat a problem when using multiple mode in XFree86 under linux: now i
> use some asic applications,some of these use pseudocolor(bpp 8),others
> use truecolor(bpp 24),so i must change the config file - XFree86config-4
> again and again,i tried to start X multiple mode ,but failed,my command
> line as below: X -query server-ip :1 -bpp 8or24,the color depth
> arguments of command line didn't take affect,it only start X with the
> file-XF86config set.
> who can help me?
> 
> -- 
> Baojian Zheng
> Institute of Computing Technology
> Chinese Academy of Sciences
> P.O. Box 2704-25
> Beijing, China,100080
> Tel: 86-10-62565533 ex. 9311
> E-mail: [EMAIL PROTECTED]
> 
> 
> 
> 
> 
> _______________________________________________
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