Re: FVWM: Strange interaction between fvwm and matlab

From: Dominik Vogt <fvwm_at_fvwm.org>
Date: Tue, 7 May 2002 12:08:57 +0200

On Fri, May 03, 2002 at 10:14:55AM -0700, Robert L. Knighten wrote:
> Dominik Vogt writes:
> > On Thu, May 02, 2002 at 04:45:34PM -0700, Robert L. Knighten wrote:
> > > I am encountering the following peculiar problem. I use the "MiniButtons" and
> > > use one of them to start Matlab using
> > >
> > > *MiniButtons - matlab32c_icon.xpm Exec exec matlab
> > >
> > > When I do this I have the unfortunate effect that using control-c at the
> > > Matlab command line, which should stop the currently executing Matlab command,
> > > kills the X server and all programs running under X.
> > >
> > > If instead I use
> > >
> > > *MiniButtons - matlab32c_icon.xpm Exec exec xterm -e matlab
> > >
> > > everything works fine, except of course I have an extra xterm hanging around.
> > >
> > > The same behavior occurs if I invoke matlab from a menu.
> >
> >
> > Strange. What fvwm version is this? Does any of the programs
> > leave a core dump on the disk?
> >
>
> Fvwm2 version 2.4.6. No core files are created. None of the log files show
> anything odd. Here are the messages from X:
>
> ...
>
> waiting for X server to shut down Terminal: fatal IO error 32 (Broken pipe) or KillClient on X server ":0.0"
>
> ...
>
> As you can see the only thing odd is that the X connection is repeatedly
> killed. I have now found a problem with the use of control-c in Matlab when
> it is started using a button in KDE, so I strongly suspect there is something
> wrong in Matlab.

That looks as if matlab does something that crashes the X server.
Should that be true, there may be a matlab bug involved, but it
definitely is an X server bug. No matter what happens, the X
server must never crash (except when it runs out of resources).

Bye

Dominik ^_^ ^_^

-- 
Dominik Vogt, email: d.vogt_at_lifebits.de
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Received on Tue May 07 2002 - 05:10:04 BST

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