RE: [Wlug] Newbie to mailing list- Issue with the generation of graphs inredhat 6.2

30 Oct 2002


      Hi Marc,
Thanks for the reply.
I agree with you Marc, it is a servlet(I'm sorry about that) and its on the 
server. The display settings seems to be proper, but my X- server seems to 
be broken.
I'd appreciate if you can guide me to any kind of information with the help 
of which I can fix the issue of broken X-windows.

Thanks,

Peram
...
From: "Marc Hughes" <HughesM@tomsnyder.com>
Reply-To: wlug@mail.wlug.org
To: <wlug@mail.wlug.org>
Subject: RE: [Wlug] Newbie to mailing list- Issue with the generation of 
graphs inredhat 6.2
Date: Wed, 30 Oct 2002 09:16:11 -0500
I'm guessing this is a server (the errors you showed before made it look 
more like a servlet than an applet)... So are you running X?  If so, when 
you start the server do you set your DISPLAY variable correctly?  Does the 
server process have access to the Xserver?
If you're not running an Xserver, you need to.  Weird, huh?  Without a 
running X-Server the JRE can't do most graphical operations, even if those 
operations never render to the display.  It's a long standing issue that a 
whole lot of people have complained about.  What you can do is run Xvfb ... 
It's a non graphical X server.  It just gives programs an Xserver to play 
with, and never displays the results of those programs.
-Marc
-----Original Message-----
From: Sudhaker P [mailto:perams27@hotmail.com]
Sent: Wednesday, October 30, 2002 9:08 AM
To: wlug@mail.wlug.org
Subject: Re: [Wlug] Newbie to mailing list- Issue with the generation of 
graphs inredhat 6.2
Hi,
With reply to my previous mail I've figured out that Java "awt" is looking
for some parameters in X-windows. I think the X is broken.
I'd appreciate if any of you gurus can guide me with fixing of X-windows.
Thanks,
Peram
...
From: "Sudhaker P" <perams27@hotmail.com>
Reply-To: wlug@mail.wlug.org
To: wlug@mail.wlug.org
Subject: Re: [Wlug] Newbie to mailing list- Issue with the generation
of
graphs in redhat 6.2
Date: Tue, 29 Oct 2002 16:07:13 -0600
Hi Karl,
Thanks a lot for the response.
I'm running it as an applet as in the below mentioned weblogic log
java.lang.NoClassDefFoundError
       at java.lang.Class.forName0(Native Method)
       at java.lang.Class.forName(Class.java:120)
       at
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:58)
       at java.awt.Window.<init>(Window.java:189)
       at java.awt.Frame.<init>(Frame.java:315)
       at java.awt.Frame.<init>(Frame.java:262)
       at com.rivenet.graphingaction.Graphit.runGraph2D(Unknown Source)
       at
com.rivenet.reporting.InformalFundingComparisonGraph.makeGraph(Unknown
Source)
       at
jsp_servlet._plan._Model_controller._jspService(_Model_controller.java:356)
       at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
       at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:123)
       at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:761)
       at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:708)
       at
weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:252)
       at
weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:346)
       at
weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:246)
       at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:135)
So I was wondering if "awt" since it needs X to generate graphs could
be
the reason and X might be broken.
In your opinion if x is broken what could the rpms that I need to
install. I'd appreciate your comments and suggestions.
Thanks,
Peram
...
From: Karl Hiramoto <karl@zoop.org>
Reply-To: wlug@mail.wlug.org
To: wlug@mail.wlug.org
Subject: Re: [Wlug] Newbie to mailing list- Issue with the generation
of
graphs in redhat 6.2
Date: Tue, 29 Oct 2002 14:43:56 -0500 (EST)
are you running it from the comand line? or an applet?
Get any errors on your command line?
Did you try on the same machine booting 2.4.16 and 2.4.7 to verify
that it is the kernel?
On Tue, 29 Oct 2002, Sudhaker P wrote:
...
Hi ,
I've a program that generates graphs with Java 1.3.1_01. The same
program is
able to generate graphs on a machine with RH 6.2 kernel 2.4.16 but
it
fails
to generate graphs on a machine with RH 6.2 kernel 2.4.7-10 on
which it
used
to generate before.  I've installed KDE and gd thinking that
something
may
broken in the OS on the jpegs generation part. But that doesn't
seem to help. I'd appreciate if any of you gurus can guide me in
this issue with your comments and suggestions.
Thanks,
Peram
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