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Discussion Groups | Matlab DSP | OpenGL problem, R14

Technical discussion about Matlab and issues related to Digital Signal Processing.

  

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OpenGL problem, R14 - Jason Miller - Mar 23 14:51:00 2005




Dear Matlab users,

I'm having some problems with R14 and OpenGL. FWIW, I just starting
using R14 today; I think it's service pack 1.

I run matlab on a debian linux server and display the GUI on my OS X
box using X11. When I do this, I get several errors in the command
window. The first error is

> Warning: Could not query OpenGL.
> Warning: OpenGL appears to be installed incorrectly.

This error occurs even before the < M A T L A B > appears at the top of
the window. I also get a bunch of errors that start like this,

> java.lang.NullPointerException
> at
> com.mathworks.mde.cmdhist.CmdHistoryWindow$PopulateThread.run(CmdHistor
> yWindow.java:237)
> java.lang.NullPointerException: Failed to retrieve atom name.
> at sun.awt.motif.MDataTransferer.getTargetNameForAtom(Native Method)
> at sun.awt.motif.MDataTransferer.getNativeForFormat(Unknown Source)
> at sun.awt.datatransfer.DataTransferer.getFlavorsForFormats(Unknown
> Source)
> at sun.awt.datatransfer.ClipboardTransferable.<init>(Unknown Source)
> at sun.awt.datatransfer.SunClipboard.getContents(Unknown Source)

and they go on to fill up the rest of the command window.

My history.m file is also causing problems, it seems. If I delete it
from the .matlab directory, the above errors are the only ones that
I'll see. (The latter error doesn't always appear, even.) A similar
thing happens if I launch matlab from the .matlab/R14/ directory. If I
launch it from my home directory, I get a bunch of errors that start
with

> Warning: Name is nonexistent or not a directory:

and cascade down to fill the command window. When this happens, none
of the toolboxes we have installed are accessible from matlab.

I really don't understand what is causing this trouble. To make this
more interesting, when I use VNC to connect to the linux machine and
run matlab, I experience none of these problems.

Can anyone tell me what might I do to make matlab run correctly via X11?

Thanks in advance for sharing your thoughts.

Best,
Jason




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