topic Problem in starting XVFB in Operating System - Linux

Problem in starting XVFB

Umesh_14 — Fri, 30 Jul 2004 05:51:59 GMT

Hi All,

I am having two machines one with headless Linux Server (Red Hat 9.0) and another with Windows 2000 client.
I would like to execute a graphic based java program which resides in headless linux machine.
I used "putty's - ssh" to access the linux machine from windows 2000.

Putty Link : http://putty.bhni.net/download.html

I tried with these,

- removed the monitor, keyboard and mouse from the Linux Server.

- changed the runlevel from 5 to 3 ie.made the XServer stopped using "telinit 3" command.

- tried to start XVFB which comes with the Red Hat 9.0 with the following command

" Xvfb :0 -screen 0 1024x768x16 & "

Got these errors
-----
Error : Could not init font path element /usr/X11R6/lib/X11/fonts/CID/, removing from list!
-----

I assume that it could not init the fonts alone but, XVFB is running. So, i tried to
execute a Graphic based Java program. But, i got the following errors

--------
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using '192.168.1.32:0.0'
as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.(X11GraphicsEnvironment.java:134)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1041)
at JavaHeadless.main(JavaHeadless.java:8)
--------

Can anyone help me to start XVFB ?

any help is appreciated.

Thank in Advance
Umesh

Re: Problem in starting XVFB

Matt Palmer_2 — Fri, 30 Jul 2004 06:34:51 GMT

Hi,

Have you entered and xhost + to the server you are trying to get onto/from. That may be why the java is failing, and could also point to your Xvfb problems.

HTH

regards

Matt

Re: Problem in starting XVFB

Umesh_14 — Fri, 30 Jul 2004 07:09:11 GMT

Thanks Palmer,

Yes, i tried this command from the windows machine thru putty
xhost +192.168.1.32

but i got the following error
xhost: unable to open
display "192.168.1.32:0.0"

the above specified ip is my client's.
any DISPLAY setting is needed ?

Thanks in Advance
Umesh

Re: Problem in starting XVFB

Matt Palmer_2 — Fri, 30 Jul 2004 07:19:29 GMT

Hi,

as far as I am aware, I believe that messages with regards to DISPLAY issues, (if the $DISPLAY env variable is set) are normally down to things like xhost, I dont really know more than that I am afraid. Are you using X11 over ssh??