Ubuntu 9.04 | java.lang.IllegalStateException: Function is not supported

Started by lainmaster, September 30, 2009, 14:03:13

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I get the following output when running my game on Ubuntu. It runs perfecly fine in Windows XP.

Xrandr extension version 1.3
Using Xrandr for display mode switching
XF86VidMode extension version 2.2
Initial mode: 1280 x 1024 x 24 @50Hz
Pixel format info: r = 8, g = 8, b = 8, a = 0, depth = 24, stencil = 0, sample buffers = 0, samples = 0
java.lang.IllegalStateException: Function is not supported
        at org.lwjgl.BufferChecks.checkFunctionAddress(BufferChecks.java:64)
        at org.lwjgl.opengl.GL11.glGetError(GL11.java:1360)
        at org.lwjgl.opengl.Util.checkGLError(Util.java:52)
        at org.lwjgl.opengl.GL11.glGetString(GL11.java:1795)
        at org.lwjgl.opengl.GLContext.getSupportedExtensions(GLContext.java:185)
        at org.lwjgl.opengl.ContextCapabilities.initAllStubs(ContextCapabilities.java:3438)
        at org.lwjgl.opengl.ContextCapabilities.<init>(ContextCapabilities.java:3684)
        at org.lwjgl.opengl.GLContext.useContext(GLContext.java:328)
        at org.lwjgl.opengl.Context.makeCurrent(Context.java:183)
        at org.lwjgl.opengl.Display.makeCurrent(Display.java:713)
        at org.lwjgl.opengl.Display.makeCurrentAndSetSwapInterval(Display.java:865)
        at org.lwjgl.opengl.Display.create(Display.java:843)
        at org.lwjgl.opengl.Display.create(Display.java:767)
        at org.lwjgl.opengl.Display.create(Display.java:748)
        at ecl.client.Main.initializeGears(Main.java:270)
        at ecl.client.Main.run(Main.java:138)
        at java.lang.Thread.run(Thread.java:636)
Exception in thread "Thread-0" java.lang.IllegalStateException: Function is not supported
        at org.lwjgl.BufferChecks.checkFunctionAddress(BufferChecks.java:64)
        at org.lwjgl.opengl.GL11.glEnable(GL11.java:1031)
        at ecl.client.Main.initializeGears(Main.java:276)
        at ecl.client.Main.run(Main.java:138)
        at java.lang.Thread.run(Thread.java:636)
Mode 0: 1280x1024 @50
java: ../../src/xcb_io.c:445: _XReply: Assertion `!dpy->xcb->reply_data' failed.
Java Result: 134
BUILD SUCCESSFUL (total time: 1 second)

I just noticed Ubuntu is set to use 24bpp for the screen, and won't allow me to chose 32. In XP, I had 32. Might that be the reason? I just read that Ubuntu's 24 bit depth is equal to Window's 32...

By the way, the line that actually generates the error is:


No GL methods are called before that line, actually, no lwjgl methods at all, except for the Display ones.

static public final String WINDOW_TITLE = "Ex Calce Liberatus Online";
static public final int SCREEN_WIDTH = 640;
static public final int SCREEN_HEIGHT = 480;
private boolean _bFullscreen = false;


	public void initializeGears(){
		try {
			setDisplayMode(SCREEN_WIDTH, SCREEN_HEIGHT, _bFullscreen);
		} catch (Exception ex) {
	private void setDisplayMode(int iWidth, int iHeight, boolean bFullscreen) throws Exception{
			Display.setDisplayMode(new DisplayMode(iWidth, iHeight));
				DisplayMode dm[] = org.lwjgl.util.Display.getAvailableDisplayModes(320, 240, -1, -1, -1, -1, 60, 85);
				org.lwjgl.util.Display.setDisplayMode(dm, new String[]{
							"width=" + iWidth, "height=" + iHeight, "freq=85",
							"bpp=" + Display.getDisplayMode().getBitsPerPixel()
			} catch(Exception e){
				Sys.alert("Error", "Could not start full screen, switching to windowed mode");
				Display.setDisplayMode(new DisplayMode(iWidth, iHeight));


Are you using an older nightly build of 2.2.0 on Linux? This looks like a bug that was fixed recently.


That's right, I'm using a one or two months 2.2 lwjgl nightly build. I'll try downloading again and see what happens.


Where can I download nightly builds? I lost the link >_>