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8354415: [Ubuntu25.04] api/java_awt/GraphicsDevice/indexTGF.html#SetDisplayMode - setDisplayMode_REFRESH_RATE_UNKNOWN fails: Height is different on vnc #3848

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8354415: [Ubuntu25.04] api/java_awt/GraphicsDevice/indexTGF.html#SetDisplayMode - setDisplayMode_REFRESH_RATE_UNKNOWN fails: Height is different on vnc #3848

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9 changes: 5 additions & 4 deletions src/java.desktop/unix/classes/sun/awt/X11GraphicsDevice.java
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Original file line number Diff line number Diff line change
Expand Up @@ -339,7 +339,7 @@ depth, getConfigColormap(0, screen),

private static native void enterFullScreenExclusive(long window);
private static native void exitFullScreenExclusive(long window);
private static native boolean initXrandrExtension();
private static native boolean initXrandrExtension(boolean useOldConfigDisplayMode);
private static native DisplayMode getCurrentDisplayMode(int screen);
private static native void enumDisplayModes(int screen,
ArrayList<DisplayMode> modes);
Expand All @@ -356,10 +356,11 @@ private static native void configDisplayMode(int screen,
*/
private static synchronized boolean isXrandrExtensionSupported() {
if (xrandrExtSupported == null) {
xrandrExtSupported =
Boolean.valueOf(initXrandrExtension());
boolean useOldConfigDisplayMode =
Boolean.getBoolean("awt.x11useOldConfigDisplayMode");
xrandrExtSupported = initXrandrExtension(useOldConfigDisplayMode);
}
return xrandrExtSupported.booleanValue();
return xrandrExtSupported;
}

@Override
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7 changes: 7 additions & 0 deletions src/java.desktop/unix/native/common/awt/awt_GraphicsEnv.h
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Expand Up @@ -64,4 +64,11 @@ struct X11GraphicsConfigIDs {
jfieldID bitsPerPixel;
};

#define MAX_DISPLAY_MODES 256
typedef struct {
unsigned int width;
unsigned int height;
jint refresh;
} DisplayMode;

#endif /* _AWT_GRAPHICSENV_H_ */
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