The window switches between maximization and minimization. The window does not render, or only partially renders

[zeke202207]

Describe the bug

The window switches between maximization and minimization. There is a problem in the window rendering.
The window does not render, or only partially renders

To Reproduce

Steps to reproduce the behavior:

1. Create a new project without doing anything else

Screenshots

Environment

• OS: Ubuntu 20.04.6 LTS
• Avalonia-Version: 11.0.5

A short bug video

15-44-00.mp4

[thevortexcloud]

Are you using a High DPI display by any chance? Avalonia does not always render at the correct scale and can look fairly weird. See here: #4826

[zeke202207]

Are you using a High DPI display by any chance? Avalonia does not always render at the correct scale and can look fairly weird. See here: #4826

This is my displays setting.

Is there a way I can make Avalonia re-render and fill in the empty space? @thevortexcloud

Thank you for your patient help!

[thevortexcloud]

Hmm, looks like a fairly standard 1080p screen. Have you tried using X11? I personally have never run into this issue using X11 and KDE (and I have made many apps). Avalonia currently uses XWayland on Wayland sessions.

I also noticed you seem to have a lot of Nvidia stuff installed. While I doubt it's causing this, is it possible to try a non Nvidia GPU if you are using one? Nvidia's driver does not always play nice on Linux.

Can you also please upload the project so I can make sure it's not some weird version problem?

[zeke202207]

Hmm, looks like a fairly standard 1080p screen. Have you tried using X11? I personally have never run into this issue using X11 and KDE (and I have made many apps). Avalonia currently uses XWayland on Wayland sessions.

I also noticed you seem to have a lot of Nvidia stuff installed. While I doubt it's causing this, is it possible to try a non Nvidia GPU if you are using one? Nvidia's driver does not always play nice on Linux.

Can you also please upload the project so I can make sure it's not some weird version problem?

I did the same validation on a virtual machine, and my virtual machine didn't install any Nvidia stuff, it was the same issue.

I use vs2022. Attached is my project. Thank you very much for your help ! @thevortexcloud
demo.zip

[timunie]

@zeke202207 can you test release mode (without debugger) on an actual Linux device?

[thevortexcloud]

I just tried running the app on a real Linux machine myself (in debug mode) and it works fine. Something strange is happening here. Have you tested another DE besides gnome/Wayland? This might still be a scaling issue too. Try setting that environment variable mentioned in that issue I linked before.

[zeke202207]

I just tried running the app on a real Linux machine myself (in debug mode) and it works fine. Something strange is happening here. Have you tested another DE besides gnome/Wayland? This might still be a scaling issue too. Try setting that environment variable mentioned in that issue I linked before.

0. I tested based on release mode
1. Sorry, I only have one linux physical machine (but I have the same problem with the virtual machine)
2. My tests below are all based on this physical machine. I set the environment variables according to the method you mentioned above #4826 and the verification results are as follows

Thank you very much for your help @thevortexcloud @timunie

09-26-45.mp4

[timunie]

First of all thx for the great video. It shows the issue quite well.

I tested based on release mode

Okay what happens then in Debugmode? I wonder if it makes any difference. I've trimming /AOT issue in mind here. Can you do me that favor and also quick double-check?

Sorry, I only have one linux physical machine (but I have the same problem with the virtual machine)

I have neither at hand, so still you can debug it better than me. Thx for confirmation both are affected.

[zeke202207]

First of all thx for the great video. It shows the issue quite well.

I tested based on release mode

Okay what happens then in Debugmode? I wonder if it makes any difference. I've trimming /AOT issue in mind here. Can you do me that favor and also quick double-check?

Sorry, I only have one linux physical machine (but I have the same problem with the virtual machine)

I have neither at hand, so still you can debug it better than me. Thx for confirmation both are affected.

I checked with DebugMode and the issue is the same as ReleaseMode.