Ubuntu Desktop graphics broken inside VirtualBox 7.0.8, but works well inside VirtualBox 6.1.44

[DSS]

Host OS: Windows 10 Home 22H2

Steps to reproduce:

1. Install VirtualBox 6.1.44
2. Create a Ubuntu Desktop 22.04.2 Guest VM on VirtualBox 6.1.44 and set Graphics Controller as VMSVGA
3. In the Ubuntu OS, install Guest Addition to enable the graphics adapter
4. Notice the desktop graphics are perfect
5. Install VirtualBox 7.0.8 to upgrade from 6.1.44
6. Open the Ubuntu VM again
7. In the VM, open any apps to open a new window, drag the window along the screen, and notice the Ubuntu Desktop graphics are suddenly broken.

Video capture of graphics broken inside VirtualBox 7.0.8: ​https://drive.google.com/file/d/1SBWs7_IEiMLK-dFXMHjVak2nAFFdNj4c/view?usp=share_link

[galitsyn]

Hi DSS,

Do you see this behavior if you disable VM 3D acceleration? Btw, it is recommended to use Guest Additions which match to VirtualBox host installation version.

[DSS]

Thank you for fast reply.

No issue after disabling VM 3D acceleration. But that 3D acceleration is supposed to be working as that on VirtualBox 6.1.44. If this is not working anymore on the newer version 7.0.8, it means there is a regression issue, right?

[DSS]

When will the 3D acceleration issue be resolved in VirtualBox 7 ?

[fth0]

Replying to DSS:

But that 3D acceleration is supposed to be working as that on VirtualBox 6.1.44. If this is not working anymore on the newer version 7.0.8, it means there is a regression issue, right?

No. While VirtualBox 6.1.x has a 3D implementation capable of D3D9, VirtualBox 7.0.x has a new 3D implementation capable of DirectX 11 (and Vulkan). It's a more or less new implementation with new features and new bugs.

[boxer01]

Did you try version 7.0.9-157502? Here is my own ticket for the graphic issues in 7.0.x version: #21515.