From: Padiyath Sreekumaran (Kumar.Padiyath@psi.ch)
Date: Tue Apr 27 2004 - 01:53:03 EDT
Hello,
I got few replies and many thanks.Especially the reply from
Franzini John from HP was very helpful.She gave a very detailed reply.
Many thanks. My thanks go to others also who send the reply.
From Franzini John:
===================
The RADEON 7500 graphics card only supports one visual class at a time. You
can specify (via X server command line options) whether you want to run in
8-bit PseudoColor mode or 24-bit TrueColor mode, but you cannot display both
8-bit PseudoColor and 24-bit TrueColor windows at the same time.
By default, the RADEON card comes up in 24-bit TrueColor mode. The PV-Wave
demo program requires an 8-bit PseudoColor visual. The demo program
displays the error message because an 8-bit PseudoColor visual is not
available.
To allow the demo program to run, you will need to start the X server in
8-bit PseudoColor mode by editing the X server configuration file,
/var/X11/Xserver.conf, and adding the -depth and -vclass command line
options to the "args" section towards the end of the file. For example:
args <
-pn
-depth 8 -vclass PseudoColor
>
Then log out of the session and on the login screen, select "Options/ Reset
Login Screen" to restart the X server.
To change back to 24-bit TrueColor mode, either remove those command line
options so the defaults are used, or change them to "-depth 24 -vclass
TrueColor".
The PV-Wave support web pages include a description of a similar problem on
an SGI system where the demo program is looking for an 8-bit PseudoColor
visual:
http://www.vni.com/tech/pvw/tips.html
Keywords: pseudocolor truecolor
Wrong Visual on 24-Bit SGI (Getting Pseudo, should be Direct
or True)
The Question was:
-----------------
> Hello,
> AlphaStation DS15
> OS : tru64 v5.1B
> ATI Radeon Graphic Card>>>
> sizer -gr shows
> 1024x768
> We have installed VNI Prduct PV-Wave on this machine.
> When the user starts the demo program he gets the following error:
> "Unsupported X Windows Visual Class: PseudoColor, Depth=8."
> How can I get rid of this error?
> Regards,
> Kumar
My question follows below:
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