SUMMARY sddm-greeter complains about Breeze Login theme. Here is output from journal: sddm-greeter[2075]: Loading file:///usr/share/sddm/themes/breeze/Main.qml... sddm-greeter[2075]: QObject: Cannot create children for a parent that is in a different thread. (Parent is QGuiApplication(0x7ffec7657f50), parent's thread is QThread(0x1451d10), current thread is QThread(0x14b3060) sddm-greeter[2075]: QObject: Cannot create children for a parent that is in a different thread. (Parent is QGuiApplication(0x7ffec7657f50), parent's thread is QThread(0x1451d10), current thread is QThread(0x14b3060) sddm-greeter[2075]: QObject: Cannot create children for a parent that is in a different thread. (Parent is QGuiApplication(0x7ffec7657f50), parent's thread is QThread(0x1451d10), current thread is QThread(0x14b3060) sddm-greeter[2075]: QObject::installEventFilter(): Cannot filter events for objects in a different thread. sddm-greeter[2075]: Error: could not load plugin for platform "" error: "La bibliothèque partagée est introuvable." QObject(0x0) sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Main.qml:495:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<argument> sddm-greeter[2075]: <input>:406:376: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:407:126: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:408:126: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:408:385: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:409:125: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:410:124: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:411:125: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:411:371: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: <input>:411:619: Could not add child element to parent element because the types are incorrect. sddm-greeter[2075]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:209:13: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax i> sddm-greeter[2075]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:209:13: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax i> sddm-greeter[2075]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:209:13: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax i> sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/VirtualKeyboard.qml:20:1: module "QtQuick.VirtualKeyboard" is not installed sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Login.qml:103:13: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<argume> sddm-greeter[2075]: file:///usr/lib64/qt5/qml/org/kde/plasma/components/Button.qml:52: ReferenceError: PlasmaCore is not defined sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Main.qml:192: TypeError: Cannot read property 'Locked' of undefined sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Main.qml:463: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/lib64/qt5/qml/org/kde/plasma/workspace/components/BatteryIcon.qml:42: TypeError: Cannot call method 'roundToIconSize' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/Battery.qml:27: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Main.qml:441: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Main.qml:446: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Main.qml:157: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:102: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:39: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:55: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:41: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:42: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:102: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:39: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:55: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:41: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:42: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:102: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:39: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:55: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:41: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:42: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:102: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:39: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:55: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:41: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/ActionButton.qml:42: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Login.qml:120: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Login.qml:115: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:84: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:114: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:100: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:101: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:91: TypeError: Cannot read property 'gridUnit' of null kernel: traps: sddm-greeter[2075] general protection fault ip:7fd5d704e137 sp:7ffec7655cc0 error:0 in libQt5Qml.so.5.15.0[7fd5d6e2e000+2b6000] sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Login.qml:120: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/Login.qml:115: TypeError: Cannot read property 'smallSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:84: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:114: TypeError: Cannot read property 'largeSpacing' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:100: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:101: TypeError: Cannot read property 'gridUnit' of null sddm-greeter[2075]: file:///usr/share/sddm/themes/breeze/components/SessionManagementScreen.qml:91: TypeError: Cannot read property 'gridUnit' of null OBSERVED RESULT Login is fine, no lag on my system. Therefore, such logging errors in journal are cumbersome and come from default Breeze theme shipped by Breeze package. Upstream issue? EXPECTED RESULT Login fine. No errors in journal related to Breeze files. SOFTWARE/OS VERSIONS Operating System: Mageia 8 KDE Plasma Version: 5.19.4 KDE Frameworks Version: 5.73.0 Qt Version: 5.15.0 Kernel Version: 5.8.1-desktop-2.mga8 OS Type: 64-bit Processors: 4 × Intel® Core™ i5-6600K CPU @ 3.50GHz Memory: 15.6 Gio of RAM Graphics Processor: GeForce GTX 1660 Ti/PCIe/SSE2 On Mageia-side, sddm is at version 0.18.1 (Latest upstream version) Breeze theme is 5.73 And Breeze SDDM theme comes from our plasma-workspace-5.19.4-2.mga8 package So assigning this to KDE maintainers.
Also reported upstream to follow up. https://bugs.kde.org/show_bug.cgi?id=425349
Keywords: (none) => UPSTREAM
See Also: (none) => https://bugs.kde.org/show_bug.cgi?id=425349
See Comment 1 in upstream bug: https://bugs.kde.org/show_bug.cgi?id=425349#c1 Will be resolved in 5.20 version of Plasma Workspace (scheduled around September 2020).
Blocks: (none) => 17523
Created attachment 12158 [details] sddm-greeter output at login time with Breeze theme
Still the same, the output is even longer (66 lines before, now pretty 121 lines). Reopened an issue upstream: https://bugs.kde.org/show_bug.cgi?id=430857
Source RPM: plasma-workspace-5.19.4-2.mga8.src.rpm => breeze-5.20.4-1.mga8.src.rpm
Fixed since plasma 5.20.x series.
Resolution: (none) => FIXEDStatus: NEW => RESOLVEDCC: (none) => geiger.david68210