Robot.createScreenCapture() does not work with unity-2d

[Michael Stringer]

The built in Java screen grabber (java.awt.Robot.createScreenCapture(...)) does not work correctly with unity-2d. When attempting to create a screen capture for the whole screen only the dash and menu bars are captured - everything else is black. This only affects unity-2d not unity or KDE.

Simple test case:

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

public class ScreenGrab {
  public static void main(String[] args) {
    try {
      Rectangle grabRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
      Robot robot = new Robot();
      BufferedImage capture = robot.createScreenCapture(grabRect);
      ImageIO.write(capture, "PNG", new File("java-screen-shot.png"));
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: openjdk-6-jre 6b24-1.11.1-4ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic i686
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
Date: Mon May 14 15:51:34 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: openjdk-6
UpgradeStatus: Upgraded to precise on 2012-04-23 (20 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Annu (anu-katta10)]

Please give the solution to capture the image properly with out any black screen. Is there any solution to capture the screen in java apart from java.awt.Robot class.

[Naviathan (naviathan)]

This was reported in May of 2012, almost 2 year ago...Why is not even assigned? It's still an issue!