X problem again

jalla · 04-25-2006, 01:25 PM

Hi,

I am trying to run a web application that uses some graphical interface (www.jfree.org) to generate a graph on "Linux test.bb.com 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux".

Getting this error:
Can't connect to X11 window server using 'localhost:0.0' as the value of the DISPLAY variable.

Code:

java.lang.InternalError: Can't connect to X11 window server using 'localhost: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.Font.initializeFont(Font.java:308)
	at java.awt.Font.(Font.java:344)
	at org.jfree.chart.plot.PiePlot.(Unknown Source)
	at org.jfree.chart.ChartFactory.createPieChart(Unknown Source)

Before starting application I did export DISPLAY=localhost:0.0 (also tried export DISPAY:0.0), doesn't help.
I also tried logging as root and running "xhost +" (and xhost +localhost) but getting Unable to open display.

I saw an error message when I rebooted the box "test login: Could not init font path element /usr/X11R6/lib/X11/fonts/CID/, removing from list". Is this a source of my problem?
I also checked if xfs was running and yes it is actually

Code:

[root@test root]# ps waux | grep xfs
xfs        788  0.0  0.2  5648 3352 ?        S    20:11   0:00 [xfs]
root      1466  0.0  0.0  3576  632 pts/0    S    20:22   0:00 grep xfs

Anyone any suggestion? Thank you in advance

ataraxia · 04-25-2006, 01:49 PM

Are you running the application as the same user that's logged in to X? You need to.

The font error message from when you reboot is not important, ignore it.

jalla · 04-25-2006, 01:54 PM

Hmm, not sure if I got it correctly, but the box is started and nobody is logged in. The web application is started via putty. The webapplication is actually resin. If you are asking if resin was started by root, yes the it is running as root user because it is listening to port 80.

jalla · 04-25-2006, 05:15 PM

Looks like Xvfb is running too:

Code:

[root@test root]# ps waux | grep Xvfb
root       835  0.0  0.0  8280  136 ?        S    Apr25   0:00 /usr/bin/X11/Xvfb -nolisten tcp :0
root      4422  0.0  0.0  3576  632 pts/0    S    00:12   0:00 grep Xvfb
[root@test root]#

jalla · 04-26-2006, 03:16 AM

I fixed the problem on resin, the solution was to pass -Djava.awt.headless=true argument.

spooon · 04-26-2006, 03:37 AM

Quote:

Originally Posted by jalla

Hmm, not sure if I got it correctly, but the box is started and nobody is logged in. The web application is started via putty. The webapplication is actually resin. If you are asking if resin was started by root, yes the it is running as root user because it is listening to port 80.

You are using it over SSH; so if you want to use X, you need to run an X server and use X forwarding, which you didn't do.