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POJava Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
 

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    <p>I have a script using java to connect to display X11 in the port 10.0 at localhost</p> <p>but i get always this error</p> <pre><code>java.lang.InternalError: Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable. at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:62) at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:178) at java.security.AccessController.doPrivileged(Native Method) at sun.awt.X11GraphicsEnvironment.&lt;clinit&gt;(X11GraphicsEnvironment.java:142) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:186) at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82) at sun.awt.X11.XToolkit.&lt;clinit&gt;(XToolkit.java:112) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:186) at java.awt.Toolkit$2.run(Toolkit.java:849) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:841) at ij.io.Opener.openJpegOrGif(Opener.java:367) at ij.io.Opener.openImage(Opener.java:220) at ij.io.Opener.openImage(Opener.java:249) at ij.io.Opener.open(Opener.java:116) at ij.IJ.open(IJ.java:1112) at ij.macro.Functions.open(Functions.java:2006) at ij.macro.Functions.doFunction(Functions.java:129) at ij.macro.Interpreter.doStatement(Interpreter.java:205) at ij.macro.Interpreter.doBlock(Interpreter.java:515) at ij.macro.Interpreter.runUserFunction(Interpreter.java:278) at ij.macro.Interpreter.getFactor(Interpreter.java:1200) at ij.macro.Interpreter.getTerm(Interpreter.java:1162) at ij.macro.Interpreter.getExpression(Interpreter.java:1145) at ij.macro.Interpreter.getBooleanExpression(Interpreter.java:881) at ij.macro.Interpreter.getLogicalExpression(Interpreter.java:857) at ij.macro.Interpreter.getBoolean(Interpreter.java:850) at ij.macro.Interpreter.doIf(Interpreter.java:829) at ij.macro.Interpreter.doStatement(Interpreter.java:217) at ij.macro.Interpreter.doBlock(Interpreter.java:515) at ij.macro.Interpreter.doStatement(Interpreter.java:241) at ij.macro.Interpreter.doIf(Interpreter.java:831) at ij.macro.Interpreter.doStatement(Interpreter.java:217) at ij.macro.Interpreter.doStatements(Interpreter.java:195) at ij.macro.Interpreter.run(Interpreter.java:99) at ij.macro.Interpreter.run(Interpreter.java:65) at ij.macro.Interpreter.run(Interpreter.java:75) at ij.plugin.Macro_Runner.runMacro(Macro_Runner.java:127) at ij.plugin.Macro_Runner.runMacroFile(Macro_Runner.java:112) at ij.IJ.runMacroFile(IJ.java:103) at ij.ImageJ.main(ImageJ.java:517) </code></pre> <p>I have tried everything to solve this problem like :</p> <pre><code>export DISPLAY=:10.0 export DISPLAY=localhost:10.0 </code></pre> <p>I tried also the port 0.0 but i get always the same error</p> <p>after trying xhost </p> <pre><code>xhost +local:all xhost: unable to open display "" xhost: unable to open display ":10.0" </code></pre> <p>how can i fix this i thought that the X Server is not runing so i tried <code>startx</code> its says its runing at that port </p> <p>my system is Ubuntu server edition 10.04</p>
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