mbien commented on issue #8079:
URL: https://github.com/apache/netbeans/issues/8079#issuecomment-2557732987
I am wondering what your system does when all screens are unplugged. In my
case it keeps at least one graphics device.
```java
public static void main(String[] args) {
JFrame frame = new JFrame("test");
frame.setSize(400, 400);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
new Thread(() -> {
while(true) {
try {
Thread.sleep(2000);
SwingUtilities.invokeLater(() -> {
List<GraphicsDevice> devices =
List.of(GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices());
GraphicsConfiguration gc =
frame.getGraphicsConfiguration();
System.out.println("s: %s, d: %s, gc: %s, devs:
%s".formatted(frame.isShowing(), frame.isDisplayable(), gc, devices));
});
} catch (InterruptedException ex) {
return;
}
}
}).start();
}
```
```
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=1],vis=0x21], devs:
[X11GraphicsDevice[screen=0], X11GraphicsDevice[screen=1]]
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=1],vis=0x21], devs:
[X11GraphicsDevice[screen=0], X11GraphicsDevice[screen=1]]
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=1],vis=0x21], devs:
[X11GraphicsDevice[screen=0], X11GraphicsDevice[screen=1]]
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=1],vis=0x21], devs:
[X11GraphicsDevice[screen=0], X11GraphicsDevice[screen=1]]
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=0],vis=0x21], devs:
[X11GraphicsDevice[screen=0]]
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=0],vis=0x21], devs:
[X11GraphicsDevice[screen=0]]
s: true, d: true, gc:
X11GraphicsConfig[dev=X11GraphicsDevice[screen=0],vis=0x21], devs:
[X11GraphicsDevice[screen=0]]
```
I unplugged both screens and the frame still had a graphics configuration
and a device assigned. So I likely won't be able to reproduce this on gnome /
cinnamon. (also NB 24 was doing fine running in the background without
exceptions in the log)
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