Problems loading SDDM themes

anonythl · 2025-05-04 05:23:06

Hey guys,

When I try and load most SDDM themes, I get error messages and it shows the ugly fallback theme instead.

Running SDDM with the sugar-candy theme outputs:

file:///usr/share/sddm/themes/sugar-candy/Main.qml:28:1: module "QtGraphicalEffects" is not installed 
     import QtGraphicalEffects 1.0
     ^

Running SDDM with the plasma-chili theme:

file:///usr/share/sddm/themes/plasma-chili/Main.qml:23:1: module "QtQuick.Controls" version 1.1 is not installed 
     import QtQuick.Controls 1.1 
     ^

This instance of Arch Linux was installed a few days ago, and I've configured a basic Hyprland setup with some QT configuration (qt6ct).
Here are all of the qt packages I have installed (pacman -Q | grep qt):

appstream-qt 1.0.5-2
hyprland-qt-support 0.1.0-6
hyprland-qtutils 0.1.4-2
kdsoap-qt6 2.2.0-1
layer-shell-qt 6.3.4-2
libqaccessibilityclient-qt6 0.6.0-1
networkmanager-qt 6.13.0-1
phonon-qt6 4.12.0-4
phonon-qt6-mpv 0.1.0-3
polkit-qt6 0.200.0-1
poppler-qt6 25.04.0-1
qca-qt6 2.3.10-1
qt5-base 5.15.16+kde+r131-1
qt5-declarative 5.15.16+kde+r22-3
qt5-graphicaleffects 5.15.16-3
qt5-quickcontrols 5.15.16-3
qt5-quickcontrols2 5.15.16+kde+r5-3
qt5-svg 5.15.16+kde+r5-3
qt5-translations 5.15.16-3
qt5-wayland 5.15.16+kde+r60-1
qt6-5compat 6.9.0-1
qt6-base 6.9.0-1
qt6-declarative 6.9.0-2
qt6-multimedia 6.9.0-1
qt6-multimedia-gstreamer 6.9.0-1
qt6-positioning 6.9.0-1
qt6-sensors 6.9.0-1
qt6-shadertools 6.9.0-1
qt6-speech 6.9.0-1
qt6-svg 6.9.0-1
qt6-tools 6.9.0-2
qt6-translations 6.9.0-1
qt6-virtualkeyboard 6.9.0-1
qt6-wayland 6.9.0-2
qt6ct 0.10-3

Additionally, there doesn't seem to be a version conflict between qmake and qtquick. QMake uses Qt version 5.15.16 (qmake --version), and the version of qt5-quickcontrols is 5.15.16-3 (pacman -Q | grep qt5-quickcontrols).

I haven't found anyone with this exact problem. How can I resolve this?

seth · 2025-05-04 06:12:05

I've configured a basic Hyprland setup with some Qt configuration

Is this SDDM on X11 or are you trying to use hyprland as SDDM compositor?

anonythl · 2025-05-04 07:03:21

This is SDDM on X11. I only mentioned Hyprland because when I installed it and configured it, I could have installed only a subset of the Qt/KDE dependencies that SDDM themes would require.

seth · 2025-05-04 07:16:15

Try to run "sddm --test-mode", if it faces the same issues we could strace it to see what paths are attempted and fail (and why)
Fwwi, https://www.reddit.com/r/archlinux/comm … t/lt512sp/ - though the Qt5 themes recently-ish still worked according to some forum threads and the SDDM PKGBUILD has t qt5-declearative as a make dependency.

Last edited by seth (2025-05-04 07:16:27)

anonythl · 2025-05-09 19:51:27

I'm sorry for the late response. "sddm --test-mode" still shows the same error, but I've moved on at this point. I'm now using KDE with autologin from SDDM, so the theme doesn't even matter at this point.

The issue isn't technically resolved, but I've pretty much moved on. Should I mark it as [Solved]?

seth · 2025-05-10 06:33:02

"[ABANDONED]" (you no longer care about the topic)

Arch Linux

#1 2025-05-04 05:23:06

Problems loading SDDM themes

#2 2025-05-04 06:12:05

Re: Problems loading SDDM themes

#3 2025-05-04 07:03:21

Re: Problems loading SDDM themes

#4 2025-05-04 07:16:15

Re: Problems loading SDDM themes

#5 2025-05-09 19:51:27

Re: Problems loading SDDM themes

#6 2025-05-10 06:33:02

Re: Problems loading SDDM themes

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