XOpenDisplay failed when running on WSL 2.2

[mikelor]

Version

2.4.1

Operating system

Linux

OS version or distribution

Ubuntu 22.04.4 LTS / WSL 2.2.2.0

Git hosting provider(s)

GitHub

Other hosting provider

No response

(Azure DevOps only) What format is your remote URL?

None

Can you access the remote repository directly in the browser?

Yes, I can access the repository

Expected behavior

When doing a git push I would expect the Github authentication popup in XWindows

This was working fine until I upgraded to WSL 2.2.2 from WSL 2.1.5.0 to fix this issue https://twitter.com/mikelor/status/1780657187649654992

Actual behavior

 ~/repos/tsathroughput   main  git push
Unhandled exception. System.Exception: XOpenDisplay failed
   at Avalonia.X11.AvaloniaX11Platform.Initialize(X11PlatformOptions options)
   at Avalonia.AvaloniaX11PlatformExtensions.<>c.<UseX11>b__0_0()
   at Avalonia.AppBuilder.SetupUnsafe()
   at Avalonia.AppBuilder.Setup()
   at Avalonia.AppBuilder.SetupWithoutStarting()
   at GitCredentialManager.UI.AvaloniaUi.<>c__DisplayClass8_1.<ShowWindowAsync>b__1(CancellationToken appCancelToken)
   at GitCredentialManager.UI.Dispatcher.DispatcherJob.Execute(CancellationToken ct)
   at GitCredentialManager.UI.Dispatcher.DispatcherJobQueue.Run()
   at GitCredentialManager.UI.Dispatcher.Run()
   at GitCredentialManager.Program.Main(String[] args)
Aborted
Username for 'https://github.com': ^C

Logs

No response

[mjcheetham]

This was working fine until I upgraded to WSL 2.2.2 from WSL 2.1.5.0

This indicates a regression and issue with WSL. Please reach out to the Windows or WSL teams.

[mikelor]

So after much searching I found out that the issue is related to some changes in WSL 2.2+ relating to how they handle WSL Networking. You can read all about it here. microsoft/WSL#11698 (comment)

After configuring with the recommended export, all of my Avalonia Apps work. Strange that this did not affect XEyes, GCalculator and other non Avalonia Based Apps.

export DISPLAY=$(ip route | grep default | awk '{print $3}'):0.0