Windows 10: Can't run lunix application GUI via WSL 2

Dears.I hope you doing well and Thanks for you effort.I install Ubuntu via WSL 2 and it's work fine with line command but when want to run an application i get the below message, i try all the solution that find in the internet but it's not work with me, i don't know if the problem with the hardware or software or the version of the Windows because i use WSL2 in another leptop with Windows 11 and it's work !!! root@Habib:~#virt-manager:125: Gtk-WARNING **: 07:06:10.715: cannot open display: localhost:0root@Habib:~#The version of the Windows used:Edition Windows 10 ProVersion 21H1Installed

:)

 

WSL 2, GUI Applications using XServer

I've seen this question before, but none of the solutions are working for me. I know the steps that are mentioned everywhere to get GUI applications working for WSL 2 on the Windows 10 Pro Insider Preview.

1. Install XServer on your windows 10 machine (here I used VcXsrv)
   
2. Run the XServer
   
3. Install something in WSL 2 that you want to display (for me it was terminator)
   
4. Run DISPLAY=:0 terminator -u to get it running.
   

However, when I do number 4, I get:

When I echo $DISPLAY it returns :0 as expected.

When I try to open something simple like xclock I get Error: Can't open display: :0

The X server is definitely running as I set it up and it exists in the Windows 10 system tray. I've tried many configurations for the X server, and I get the same thing every time. I've also tried just setting the $DISPLAY in the .bashrc file, with the same results.

I've also tried the solutions proposed here, by exporting DISPLAY to localhost:0.0, which the same results (also tried 0.0, :0, and a few others).

I've tried rebooting, uninstalling and reinstalling things, and I get the same results every time. I'm not sure what to try next.

 

Blurry fonts on using Windows default scaling with WSL GUI applications (HiDPI)

Is there a way to fix blurry fonts in linux GUI applications when being run from WSL (Ubuntu 18.04) using the default Windows scaling? Things I have tried so far:

With Xming:

1. Tried disabling Windows scaling and setting it from linux side using GDK_DPI_SCALE=2.5, the problem with this is several things like context menu icons don't play nicely and are often not scaled. Without GDK_DPI_SCALE=2.5, applications are basically unusable since the text is extremely tiny.
   
2. Tried installing all the fonts from C:\Windows\Fonts to C:\Program Files\Xming\fonts\TTF and running mkfontscale, couldn't make it work this way either.
   
3. Tried using VcXsrv, has the same issue.
   

Screenshots

• Clion:
  

• Comparison between emacs (WSL) and VS Code (Windows native)
  

All the resources I have looked up so far:

1. Why are WSL GUI apps rendered with blurry fonts with Xming?: The answer here is specifically for just firefox and electron based applications.
   
2. Gnome-Terminal blurry on Xming: Doesn't have anything helpful in particular either other than a suggestion to disable scaling and using something else than Xming.
   
3. DPI issues running GUI programs on a 4K screen: Suggests using VcXsrv.
   

The main purpose of doing all this is to be able to run text editors(emacs)/IDE(Clion) from WSL. And, the reason I cannot install their windows equivalent is we develop only for linux.

Few system details:

Screen

4K (3840x2160) - 15.6"

OS

• Windows: Windows 10 Home v1803 Build: 17134.345
  
• WSL: Ubuntu 18.04 (Linux username 4.4.0-17134-Microsoft #345-Microsoft Wed Sep 19 17:47:00 PST 2018 x86_64 x86_64 x86_64 GNU/Linux)
  

 

WSL 2

I want to make use of WSL 2 feature with the new update of Windows version 2004 , in order to use WSL 2 i need to enable Virtualization in my pc bios settings. So when i enable virtualization my windows starts lagging and all the animations of scrolling
etc etc lags...Please suggest me something to fix that so that i could use the new virtualization feature.