Unciv not launching

[meyou69]

Is there an existing issue for this?

• I have searched the existing issues

Game Version

4.14.1

Describe the bug

When launching the game, the game does not load and exits immediately.

Not even a window appears at all on my desktop.

Please note: I am specifically talking about the flatpak version of the game

Steps to Reproduce

1. Load the game page in Discover
2. Press the Launch button (the game needs to be installed beforehand)
3. Wait a couple of seconds
4. Nothing happens

Alternatively, you can also try to launch the game from the command line, where the following error appears:

(base) alex@fedora:~$ /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=unciv io.github.yairm210.unciv
[LWJGL] GLFW_PLATFORM_ERROR error
        Description : Wayland: Failed to connect to display
        Stacktrace  :
                org.lwjgl.glfw.GLFW.glfwInit(GLFW.java:1109)
                com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application.initializeGlfw(Lwjgl3Application.java:89)
                com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration.getPrimaryMonitor(Lwjgl3ApplicationConfiguration.java:281)
                com.unciv.app.desktop.DesktopScreenMode$Companion.getMaximumWindowBounds$desktop$default(DesktopDisplay.kt:85)
                com.unciv.app.desktop.DesktopLauncher.main(DesktopLauncher.kt:82)
Exception in thread "main" com.badlogic.gdx.utils.GdxRuntimeException: Unable to initialize GLFW
        at com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application.initializeGlfw(Lwjgl3Application.java:90)
        at com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration.getPrimaryMonitor(Lwjgl3ApplicationConfiguration.java:281)
        at com.unciv.app.desktop.DesktopScreenMode$Companion.getMaximumWindowBounds$desktop$default(DesktopDisplay.kt:85)
        at com.unciv.app.desktop.DesktopLauncher.main(DesktopLauncher.kt:82)

Screenshots

No response

Link to save file

No response

Operating System

Linux

Additional Information

The operating system that I was using was Fedora KDE Spin version 40. Since then, I have upgraded to Fedora KDE Spin version 41. The bug reproduces on both of them, equally

[FilipRank]

I have the same issue with 1.14.1 (jar) on my Mac. 1.14.0 works without issues.

[nintyfan]

Same error on Wayland.

Temporary solution: Start new terminal emulator window and type:

unset WAYLAND_DISPLAY
flatpak run io.github.yairm210.unciv && exit

[meyou69]

Same error on Wayland.

Temporary solution: Start new terminal emulator window and type:

unset WAYLAND_DISPLAY
flatpak run io.github.yairm210.unciv && exit

I can confirm that this solution worked for me.

A long term solution is still needed, though

[yairm210]

Looks like this is a problem with the latest LibGDX version which I just updated
libgdx/libgdx#7495
I'll revert this change in next version

[yairm210]

Resolved with 0c6ae89