SUMMARY Using KDE Neon User edition, I can load others window decoration theme, but when using the last version of Unstable edition, I can only use the default theme such as Breeze or Oxygen. I perfectly know that unstable it's supose to happen "bad" things. I just report this in order to get fix in next updates STEPS TO REPRODUCE 1. Install KDE Neon unstable or update from user to unstable. 2. Open up systemsettings 3. Try to use other decoration theme. 4. Get error failed to adopt blah blah.... See bellow for more info about the error OBSERVED RESULT No changes in the windows decoration EXPECTED RESULT Would like to use other windows decoration SOFTWARE/OS VERSIONS Operating System: KDE neon Unstable Edition KDE Plasma Version: 6.3.80 KDE Frameworks Version: 6.12.0 Qt Version: 6.8.2 Kernel Version: 6.13.4-x64v3-xanmod1 (64-bit) Graphics Platform: Wayland Processors: 4 × AMD A12-9720P RADEON R7, 12 COMPUTE CORES 4C+8G Memory: 16 GiB of RAM (15.1 GiB usable) Graphics Processor 1: AMD Radeon R7 Graphics Graphics Processor 2: AMD Radeon 500 Series Manufacturer: Acer Product Name: Aspire A515-41G System Version: V1.09 ADDITIONAL INFORMATION LANG=en kcmshell6 kcm_kwindecoration Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8. Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead. If this causes problems, reconfigure your locale. See the locale(1) manual for more information. kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze.so" kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.oxygen.so" kf.newstuff.quick.private: You have not set a transientParent on KNewStuff.Dialog or .Action. This may cause severe problems with window and lifetime management. We'll try to fix the situation automatically but you should really provide an explicit transientParent looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry 0 cache entry KNSCore::Entry(uniqueId: "1354048", name:"ChromeOS Aurorae", status: Installed, installedFiles: QList("/home/gilberto/.local/share/aurorae/themes/ChromeOS/*", "/home/gilberto/.local/share/aurorae/themes/ChromeOS-light/*", "/home/gilberto/.local/share/aurorae/themes/ChromeOS-dark/*")) "" "" looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 looking for cache entry looking for cache entry -1 kf.newstuff.core: can only adopt one file, will be using the first "/home/gilberto/.local/share/aurorae/themes/ChromeOS/*" qrc:/qt/qml/org/kde/desktop/MenuItem.qml:84:13: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 9. Use 'sequences: [ <key> ]' to bind to all of them. Failed to adopt 'ChromeOS Aurorae' Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8. Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead. If this causes problems, reconfigure your locale. See the locale(1) manual for more information. kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze.so" kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.oxygen.so" kf.i18n: 0 instead of 2 arguments to message "Resolved %1 to the K..." supplied before conversion
please install the brand new aurorae package from the unstable archive. aurorae has been split out of kwin and is now a runtime dep. as soon as i can fix the latest compilation problem with kwin it will be a runtime dep and pulled in automatically. curiously the kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze.so" error persists, so probably a different problem to be solved.
(In reply to Carlos De Maine from comment #1) > please install the brand new aurorae package from the unstable archive. > aurorae has been split out of kwin and is now a runtime dep. as soon as i > can fix the latest compilation problem with kwin it will be a runtime dep > and pulled in automatically. > > curiously the kf.coreaddons: KPluginFactory could not create a > KDecoration3::DecorationThemeProvider instance from > "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze. > so" error persists, so probably a different problem to be solved. I am using Kubuntu again, the 25.10 daily iso, dated from 08-15-2025, and got error again. Aditionaly, when using X11, no windows border at all! How can I fix that.
Here the complete error message when try to add other theme Falhas ao adotar 'ChromeOS Aurorae' kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze.so" kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.oxygen.so" kf.i18n: 0 instead of 2 arguments to message "Resolveu %1 ao tema ..." supplied before conversion
(In reply to Gilberto Ferreira from comment #3) > Here the complete error message when try to add other theme > > Falhas ao adotar 'ChromeOS Aurorae' > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.i18n: KCatalog being used without a Q*Application instance. Some > translations won't work > kf.coreaddons: KPluginFactory could not create a > KDecoration3::DecorationThemeProvider instance from > "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze. > so" > kf.coreaddons: KPluginFactory could not create a > KDecoration3::DecorationThemeProvider instance from > "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.oxygen. > so" > kf.i18n: 0 instead of 2 arguments to message "Resolveu %1 ao tema ..." > supplied before conversion I noticed that with manjaro linux, I don't have any error, no matter using X11 or Wayland.
reassigned to kwin and kubuntu as os, as user has switched distro. looks like a kubuntu packaging issue @rikmills however the error is not exactly clear and could use some extra info please ??
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The error is exactly that, as I told before: kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.i18n: KCatalog being used without a Q*Application instance. Some translations won't work kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.breeze.so" kf.coreaddons: KPluginFactory could not create a KDecoration3::DecorationThemeProvider instance from "/usr/lib/x86_64-linux-gnu/qt6/plugins/org.kde.kdecoration3/org.kde.oxygen.so" kf.i18n: 0 instead of 2 arguments to message "Resolveu %1 ao tema ..." supplied before conversion
Created attachment 184585 [details] error
(In reply to Gilberto Ferreira from comment #8) > Created attachment 184585 [details] > error as you use kubuntu now, linking to the issue in their bug tracker https://bugs.launchpad.net/ubuntu/+bug/2110572
kubuntu packaging issue
Hi! I am using Kubuntu 25.10, with the iso from 18th september and the issue has gone. Thanks