Gnome 46 apps not using dark theme?

MKu

Xubuntu 24.10 (Oracular Oriole) Daily Build dark theme works,
but Xubuntu 24.04 (Noble Numbat) Daily Build dark mode doesn’t work for the following apps:

App Center
Firmware Updater
Document scanner
Disk Usage Analyzer
Sudoku
Font

How is that implemented in Xubuntu 24.10 (Oracular Oriole) Daily Build version?

M.Hanny Sabbagh

Hi,

The apps you mentioned are probably GNOME-based applications and they are using libadwaita. Read more about the situation from our post here: https://fosspost.org/how-to-change-libadwaita-app-theme-linux

To theme them, you can install the Gradience application as described in the article and choose the “Adwaita Dark” theme and apply it.

Edit: Just noticed I pasted the wrong link instead of the one I wanted, fixed!

MKu

That link doesn’t answer my question.
In Xubuntu 24.10 (Oracular Oriole) Daily Build, the dark theme works for all applications,
but in Xubuntu 24.04 (Noble Numbat) Daily Build, the dark theme does not work for all applications.
Why does the dark theme work in Xubuntu 24.10 (Oracular Oriole) Daily Build but not in another version?
How dark theme implemented in Xubuntu 24.10 (Oracular Oriole) Daily Build?

M.Hanny Sabbagh

Maybe they have fixed the issue in the software version of Xubuntu 24.10, but unless they see it as an actual issue, it may remain with this behavior in Xubuntu 24.04.

It depends a lot on what method you use to enable the so-called “dark mode” in Xfce. They might have fixed the issue in the version which ships with 24.10, but not with 24.04.

In any case, you can always use GNOME Tweaks, GNOME Control Center and the Gradience app mentioned earlier to change GNOME-based applications themes, even when running under Xfce.