UI fails to run when launched with sudo in Linux enviroment

[BlakePeavy]

When launching a UI with the sudo command (ex. "sudo dotnet myapp.dll" or "sudo -s" "dotnet myapp.dll") the build seemingly fails.

This can be reproduced with any basic application, in my particular case it requires superuser access. Running as a user runs as expected (aside from permission issues from my client dll which isn't related to any UI issues).

Desktop (please complete the following information):

• Ubuntu 62 bit
• Ubuntu 22.04.1 LTS

Unhandled exception. System.Exception: XOpenDisplay failed
   at Avalonia.X11.AvaloniaX11Platform.Initialize(X11PlatformOptions options) in /_/src/Avalonia.X11/X11Platform.cs:line 57
   at Avalonia.AvaloniaX11PlatformExtensions.<>c__0`1.<UseX11>b__0_0() in /_/src/Avalonia.X11/X11Platform.cs:line 280
   at Avalonia.Controls.AppBuilderBase`1.Setup() in /_/src/Avalonia.Controls/AppBuilderBase.cs:line 303
   at Avalonia.Controls.AppBuilderBase`1.SetupWithLifetime(IApplicationLifetime lifetime) in /_/src/Avalonia.Controls/AppBuilderBase.cs:line 179
   at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime[T](T builder, String[] args, ShutdownMode shutdownMode) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 208
   at myapp.Program.Main(String[] args) in C:\git\myapp\Program.cs:line 14

[kekekeks]

Check if xterm works with sudo on your Linux machine.

[kekekeks]

XOpenDisplay means a failure to connect to X11, so it's an environment issue