after installing wsl-setup WSLG GUI apps stopped working

[Fiz]

Installed this in a fresh instance of Windows 11 WSL2, systemd is working, but the GUI apps are not working and produces "Error: Can't open display: :0"

Here is the versions

C:\WINDOWS\system32>wsl -v
WSL version: 0.66.2.0
Kernel version: 5.15.57.1
WSLg version: 1.0.42
MSRDC version: 1.2.3401
Direct3D version: 1.606.4
DXCore version: 10.0.25131.1002-220531-1700.rs-onecore-base2-hyp
Windows version: 10.0.22000.708

[Carlos Nihelton (cnihelton)]

That bug is most likely unrelated to Ubuntu or wsl-setup itself. Current version of WSL/WSLg creates incremental named symlinks to the X11 socket inside `/tmp/.X11-unix/` (X0, X1, X2...) as one launches different distros, thus the DISPLAY environment variable (always set to `:0`) doesn't match the socket. See the following issue in MS repo: https://github.com/microsoft/wslg/issues/818 .

You can confirm that by running `ls -l /tmp/.X11-unix/` across different distros.

One workaround would be setting the DISPLAY environment variable according to the socket name found. See https://github.com/microsoft/wslg/issues/818#issuecomment-1227756256

 # set X server display
 export DISPLAY=:$(ls /tmp/.X11-unix/ | cut -d "X" -f2)

I'd appreciate you confirming the case so I can properly close this bug report.

[Carlos Nihelton (cnihelton)]

Also, if my assumption is correct, the latest version of WSL contains the fix for that. Could you please check that out?

https://github.com/microsoft/WSL/releases/tag/0.67.6

[Fiz (fm663)]

How to get that version installed via Microsoft Store apps?