UnsupportedOperationException: Unable to open DISPLAY

[dyskette]

Hi, I cannot run this on Fedora Silverblue 36. Help?

$ flatpak run io.conduktor.Conduktor 
WARNING: Unknown module: javafx.graphics specified to --add-exports
WARNING: Unknown module: javafx.base specified to --add-exports
WARNING: Unknown module: javafx.graphics specified to --add-opens
WARNING: Unknown module: javafx.controls specified to --add-opens
Exception in thread "main" java.lang.UnsupportedOperationException: Unable to open DISPLAY
    at com.sun.glass.ui.gtk.GtkApplication.lambda$new$6(GtkApplication.java:173)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at com.sun.glass.ui.gtk.GtkApplication.<init>(GtkApplication.java:171)
    at com.sun.glass.ui.gtk.GtkPlatformFactory.createApplication(GtkPlatformFactory.java:41)
    at com.sun.glass.ui.Application.run(Application.java:144)
    at com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:280)
    at com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:269)
    at com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:158)
    at com.sun.javafx.application.LauncherImpl.startToolkit(LauncherImpl.java:658)
    at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:678)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
    at java.base/java.lang.Thread.run(Thread.java:829)

[dyskette]

Fixed it by removing fallback-x11 with flatseal.

[Eonfge]

Can you tell me what window manager you use? I have to admit that I never tested this much on Wayland, so perhaps it doesn't actually work on Wayland.

[dyskette]

Yes, I'm using GNOME 42 Wayland

[Eonfge]

It appears that Java FX has no Wayland support.

Could you do two things for me?

• Reset your Flathub permissions to the default
• Try the patch of this merge-request: https://github.com/flathub/io.conduktor.Conduktor/pull/53

If it then works for you, I'll publish the change

[Eonfge]

Well, I had some time to test it, and I can confirm the issue. Well, thanks for reporting this and I'll be distributing the patch.

[dyskette]

I confirm as well, it works. Thank you.