Ubuntu: I can't open this .jar file. Help! (Kubuntu Wily)


I have already checked the questions people ask about this problem. But that was Ubuntu and I'm running Kubuntu.

I tried to set jar on the Application Preferences Order but there is no such thing as jar so, I choose java instead.

Then I clicked OK and everything and double clicked on the file I want to open. The loading cursor changed into a jumping coffee bean but still, nothing happened. It still won't open.

Now, after doing some gcj stuff (which I have no idea what it is), I tried to execute java -jar PixelsinHell.jar and it shows me this :

    Exception in thread "LWJGL Application" java.lang.ExceptionInInitializerError          at com.badlogic.gdx.backends.lwjgl.LwjglGraphics.setVSync(LwjglGraphics.java:502)          at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:118)  Caused by: java.lang.ArrayIndexOutOfBoundsException: 0          at org.lwjgl.opengl.LinuxDisplay.getAvailableDisplayModes(LinuxDisplay.java:954)          at org.lwjgl.opengl.LinuxDisplay.init(LinuxDisplay.java:738)          at org.lwjgl.opengl.Display.<clinit>(Display.java:138)          ... 2 more  AL lib: (EE) alc_cleanup: 1 device not closed  

Help, please?


This post appears to have your exact error message.

It states that installing the x11-xserver-utils package is required. You can install this with sudo apt-get install x11-xserver-utils.

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