Hello there.
Thank you for your reply.
Going back to {ADW_DISABLE_PORTAL=0 (via
~/.config/environment.d/adwaita.conf) + reboot} I experience the same issue
again.
[image: image.png]
Thank you for your time and consideration.
Best,
Matteo
On Mon, Mar 2, 2026 at 11:45 AM Alessandro Astone <
[email protected]> wrote:
> I'm unable to reproduce the issue.
> If you launch an affected application from the terminal, does it print any
> warnings when changing the system color theme?
>
> Please also share the output of `journalctl -b` after reproducing the
> issue.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2143006
>
> Title:
> libadwaita apps stuck in light mode; ignoring xdg-desktop-portal in
> 24.04
>
> Status in libadwaita-1 package in Ubuntu:
> New
>
> Bug description:
> Description:
> On Ubuntu 24.04, toggling the Appearance style to "Dark" in GNOME
> Settings fails to apply to core GTK4/libadwaita applications (such as
> gnome-control-center and nautilus). The windows remain stuck in light mode,
> even though third-party apps (like Google Chrome) correctly detect and
> apply the dark theme.
>
> Steps to Reproduce:
> 1.Open GNOME Settings -> Appearance.
> 2.Select the "Dark" style.
> 3.Observe that the Settings window and Nautilus do not change and remain
> in light mode.
>
> Diagnostics Performed:
>
> System-wide issue: The issue persists on a newly created, entirely
> clean user account, ruling out corrupted local configurations or GNOME
> extensions.
>
> Portal Status: xdg-desktop-portal and xdg-desktop-portal-gnome are
> installed, active, and running without errors in systemd.
>
> D-Bus Broadcast is Correct: Queried the portal directly via D-Bus to see
> if the system was broadcasting the theme correctly using the following
> command:
> gdbus call --session --dest org.freedesktop.portal.Desktop --object-path
> /org/freedesktop/portal/desktop --method
> org.freedesktop.portal.Settings.Read 'org.freedesktop.appearance'
> 'color-scheme'
> This correctly returned (<<uint32 1>>,), confirming the portal is
> successfully reading the setting and broadcasting Dark Mode.
>
> The Workaround:
> Setting the environment variable ADW_DISABLE_PORTAL=1 (via
> ~/.config/environment.d/adwaita.conf) and rebooting immediately resolves
> the issue. Core apps instantly respect the dark theme.
>
> Conclusion:
> Because bypassing the portal fixes the rendering, this indicates that
> libadwaita's internal portal-listener in this build is either failing to
> read or entirely ignoring the correct color-scheme D-Bus signal being
> broadcasted by xdg-desktop-portal-gnome.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 24.04
> Package: libadwaita-1-0 1.5.0-1ubuntu2
> ProcVersionSignature: Ubuntu 6.17.0-14.14~24.04.1-generic 6.17.9
> Uname: Linux 6.17.0-14-generic x86_64
> ApportVersion: 2.28.1-0ubuntu3.8
> Architecture: amd64
> CasperMD5CheckResult: unknown
> CurrentDesktop: ubuntu:GNOME
> Date: Mon Mar 2 00:40:56 2026
> InstallationDate: Installed on 2025-12-26 (65 days ago)
> InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
> (20250805.1)
> ProcEnviron:
> LANG=en_US.UTF-8
> PATH=(custom, no user)
> SHELL=/usr/bin/zsh
> TERM=xterm-256color
> XDG_RUNTIME_DIR=<set>
> SourcePackage: libadwaita-1
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/libadwaita-1/+bug/2143006/+subscriptions
>
>
--
Ing. Matteo Mendula, PhD Computer Science and Engineering
Phone: +39 3347828762
** Attachment added: "image.png"
https://bugs.launchpad.net/bugs/2143006/+attachment/5949652/+files/image.png
** Attachment added: "journalctl.txt"
https://bugs.launchpad.net/bugs/2143006/+attachment/5949653/+files/journalctl.txt
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2143006
Title:
libadwaita apps stuck in light mode; ignoring xdg-desktop-portal in
24.04
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libadwaita-1/+bug/2143006/+subscriptions
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