Icon not being set on Ubuntu via ebiten.SetWindowIcon()

[radeeyate]

Ebitengine Version

v2.8.6

Operating System

• Windows
• macOS
• Linux
• FreeBSD
• OpenBSD
• Android
• iOS
• Nintendo Switch
• PlayStation 5
• Xbox
• Web Browsers

Go Version (go version)

1.23.4

What steps will reproduce the problem?

Add the following code to generate an icon and set it:

icon := ebiten.NewImage(32, 32)
icon.Fill(color.RGBA{0x33, 0x33, 0x55, 0xff})
ebiten.SetWindowIcon([]image.Image{icon})

What is the expected result?

The application icon to be set.

What happens instead?

The application icon just seems to stay as the default icon on GNOME:

Anything else you feel useful to add?

I'm not sure if this is just specific to Ubuntu or whether it would affect other distros as well. I'm aware that I should in reality be setting the icon with a .desktop file for the game - it just seems like it should be working as it does on Windows as I presume.

[hajimehoshi]

Did you call ebiten.RunGame?

[radeeyate]

Yes - it seems to have troubles either way.

[hajimehoshi]

Could you try

1. Run go run github.com/hajimehoshi/ebiten/v2/windowsize
2. Press 'I' some times to see icon changes

?

[radeeyate]

Icon changes don't seem to apply using that either.

Screencast.from.2025-02-26.19-10-14.mp4

[hajimehoshi]

What desktop environment are you using?

[radeeyate]

GNOME 46 (on Wayland) on Ubuntu 24.04

[hajimehoshi]

Thanks, I'll take a look later

[hajimehoshi]

Wayland

I'm afraid Wayland is not supported well so far.