Weird graphics on windows

[morphee]

I installed ubuntu-22.04.1-desktop-amd64 on VirtualBox-7.0.2 on my pc with Windows 10, following a tuto.
All went fine, except on some windows, for example the "save as" popup of Atom or other type of modals, which are completely unreadable :

Did you get this kind of problem already ?
What can I do to solve it ?

[morphee]

this is a screenshot :
https://ibb.co/mhR0DHn

[MAFoElffen]

Wow.

What are the video settings of the Virtual Machine in VirtualBox... And what are the Graphics settings in Ubuntu?

[halogen2]

on some windows, for example the "save as" popup of Atom or other type of modals, which are completely unreadable :

Are all the affected apps GTK4?

[morphee]

Wow.

What are the video settings of the Virtual Machine in VirtualBox... And what are the Graphics settings in Ubuntu?

VM :
128 MB video memory
1 screen
VMSVGA with 3D acceleration enable

Ubuntu :
whatever the screen resolution
I did not change any other parameters, do you need something more ?

Are all the affected apps GTK4?

How can I test that ?
(can you tell some software to try with ?)

For now, I noticed the problem with :
- Atom
- the installation modals of XAMP

I did not see (so far) the problem with :
- LibreOffice Writer or Calc
- Firefox (except on bookmark and historic popup title, but the inside is ok)
- Geary

[halogen2]

How can I test that ?

How to check whether an app uses GTK 4 depends how you have the app installed. Probably simpler to just say, if they are GTK 4 apps, I have seen similar and was able to work around it: open a Terminal and run

export LIBGL_ALWAYS_SOFTWARE=1

then run an affected app from that same terminal window. Does this help the issue in your case?

[morphee]

Does this help the issue in your case?

Unfortunately, no...

[morphee]

How to check whether an app uses GTK 4 depends how you have the app installed

Do you mean that, if I installed Atom from Ubuntu app store, the problem may be there.
If so, if I uninstall it then install it from the terminal, that can solve the problem ?

[morphee]

After lot of tests on parameters and investigations, it seems that using ubuntu-20.04.5-desktop-amd64 solved my issue.