JavaFX应用程序在Debian上抛出空指针异常

Question

我试图在Debian上启动桌面java应用程序。

详情如下：

• Debian弹力9.9
• openjdk-8-jdk-无头:jdk 64- 8u212-b01-1~deb9u1 9u1
• openjfx - 8u141-b14-3~deb9u1

这个应用程序在其他PC上已经运行了很长一段时间。但是在这台机器上，启动我的应用程序后，我会看到空窗口(没有控件)和下面的异常：

java.lang.NullPointerException
    at com.sun.javafx.sg.prism.RegionImageCache.<init>(RegionImageCache.java:71)
    at com.sun.javafx.sg.prism.NGRegion.getImageCache(NGRegion.java:467)
    at com.sun.javafx.sg.prism.NGRegion.renderBackgroundRectangle(NGRegion.java:811)
    at com.sun.javafx.sg.prism.NGRegion.renderAsRectangle(NGRegion.java:751)
    at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:572)
    at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2053)
    at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1945)
    at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
    at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
    at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2053)
    at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1945)
    at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
    at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
    at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2053)
    at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1945)
    at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:477)
    at com.sun.javafx.tk.quantum.ViewPainter.paintImpl(ViewPainter.java:330)
    at com.sun.javafx.tk.quantum.UploadingPainter.run(UploadingPainter.java:134)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:125)
    at java.lang.Thread.run(Thread.java:748)

有办法解决这个问题吗？

PS。部分应用程序代码

Application.launch(FXMainWindow.class);

public class FXMainWindow extends Application  {

    private ArrayList<ToggleButton> components;

    @Override
    public void start(Stage stage) throws Exception {

        stage.setTitle("App");
        BorderPane root = new BorderPane();

        //bottom
        HBox bottom = new HBox();
        root.setBottom(bottom);

        Button btnRefreshAll = new Button("some");
        HBox.setHgrow(btnRefreshAll, Priority.ALWAYS);
        btnRefreshAll.setMaxWidth(Double.MAX_VALUE);
        btnRefreshAll.setOnAction(event-> {
                new EntityStateRefresher(actions, 10, this).start();
        });
        bottom.getChildren().add(btnRefreshAll);

         .....

        Scene scene = new Scene(root, 210, 363);
        stage.setScene(scene);
        stage.show();

    }

Answer 1

安装带有OpenGL支持的视频驱动程序(i915)和黑名单nouveau之后，问题就解决了。

谢谢大家的评论