SUMMARY Too many logging as warnings in journald system journal coming from QT and Plasma 5 programs like this: plasmashell[2223]: file:///usr/share/plasma/packages/org.kde.paneltoolbox/contents/ui/main.qml:89:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax inste> plasmashell[2223]: Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations. plasmashell[2223]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:73:5: QML Binding: Not restoring previous value because restoreMode has not been set. This behavior is deprecated. You have to import QtQml 2.15 after any QtQuick imports and set the restoreMode of the binding to fix this warning. In Qt < 6.0 the default is Binding.RestoreBinding. In Qt >= 6.0 the default is Binding.RestoreBindingOrValue. plasmashell[2223]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:89:5: QML Binding: Not restoring previous value because restoreMode has not been set. This behavior is deprecated. You have to import QtQml 2.15 after any QtQuick imports and set the restoreMode of the binding to fix this warning. In Qt < 6.0 the default is Binding.RestoreBinding. In Qt >= 6.0 the default is Binding.RestoreBindingOrValue. plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/BusyIndicatorStyle.qml:39:9: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/BusyIndicatorStyle.qml:39:9: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 57700, resource id: 37748869, major code: 18 (ChangeProperty), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58141, resource id: 18877318, major code: 3 (GetWindowAttributes), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 58142, resource id: 18877318, major code: 14 (GetGeometry), minor code: 0 plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 1124, resource id: 106954755, major code: 15 (QueryTree), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 1129, resource id: 106954755, major code: 18 (ChangeProperty), minor code: 0 plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:60:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax inst> plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/FullRepresentation.qml:50:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated> plasmashell[2223]: 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 in> plasmashell[2223]: 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 in> plasmashell[2223]: file:///usr/lib64/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:189: ReferenceError: string is not defined plasmashell[2223]: 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 in> plasmashell[2223]: 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 in> plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:60:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax inst> plasmashell[2223]: file:///usr/lib64/qt5/qml/org/kde/plasma/components/TabButton.qml:102:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: funct> plasmashell[2223]: file:///usr/lib64/qt5/qml/org/kde/plasma/components/TabButton.qml:102:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: funct> plasmashell[2223]: 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 in> plasmashell[2223]: 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 in> plasmashell[2223]: Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations. plasmashell[2223]: Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations. plasmashell[2223]: Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations. plasmashell[2223]: 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 in> plasmashell[2223]: 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 in> plasmashell[2223]: 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 in> plasmashell[2223]: 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 in> plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:60:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax inst> plasmashell[2223]: 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 in> plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.devicenotifier/contents/ui/FullRepresentation.qml:107:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecat> plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.devicenotifier/contents/ui/FullRepresentation.qml:87:9: QML Connections: Implicitly defined onFoo properties in Connections are deprecate> plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ScrollViewStyle.qml:60:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax inst> plasmashell[2223]: 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 plasmashell[2223]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:209:13: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. plasmashell[2223]: file:///usr/lib64/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:189: ReferenceError: string is not defined kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 5558, resource id: 58720273, major code: 18 (ChangeProperty), minor code: 0 plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 10735, resource id: 56623143, major code: 18 (ChangeProperty), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 11775, resource id: 37748857, major code: 73 (GetImage), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 11776, resource id: 37748857, major code: 73 (GetImage), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 11777, resource id: 37748857, major code: 73 (GetImage), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 11778, resource id: 37748857, major code: 73 (GetImage), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 11779, resource id: 37748857, major code: 73 (GetImage), minor code: 0 plasmashell[2223]: file:///usr/lib64/qt5/qml/org/kde/plasma/components/Highlight.qml:47:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: functi> plasmashell[2223]: trying to show an empty dialog kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 13458, resource id: 37748865, major code: 18 (ChangeProperty), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 13464, resource id: 37748866, major code: 18 (ChangeProperty), minor code: 0 plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 15976, resource id: 18875164, major code: 3 (GetWindowAttributes), minor code: 0 kwin_x11[2180]: qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 15977, resource id: 18875164, major code: 14 (GetGeometry), minor code: 0 plasmashell[2223]: file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:285:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. STEPS TO REPRODUCE 1. Run Plasma 5.19.4 2. See warning level messages like mentioned above in a Konsole with "journalctl -f" These warning level messages are unnecessary for the end user, they can give the feeling of a dysfunction. They must not be logged at warning level but at a less important like notice or debug. SOFTWARE/OS VERSIONS Operating System: Mageia 8 KDE Plasma Version: 5.19.4 KDE Frameworks Version: 5.72.0 Qt Version: 5.15.0 Kernel Version: 5.7.12-desktop-1.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 Workaround: Add QT_LOGGING_RULES='*=false' as environment variable to change this behaviour, e.g. to completely disable logging in /etc/environment
Some distros used to install a config with *.debug=false and it was a PITA figuring out why no debug was produced whatsoever... I agree that these Qt deprecation warnings are quite obnoxious.
I agree distributions should not deactivate that logging with an ENV setting. BUT, these logging should not be output at warning level: there is any broken functionality, GUI "just works" some. Listening hard-drives (not SSD), use of Plasma produces more noises from that harddrives than other DE. These logging fills up to much datas to journal, encumbering it, degrades performance and reduces lifetime of these supports. Mounting /var/log as tmpfs workarounds lifetime but it not a viable solution for end-users. This is an upstream bug, not in Mageia RPM. Suggestion: There is a KCM panel "User Feedback" in Systemsetting. These debug or notice level logs should be activated by a checkbox in this KCM Systemsettings. Some awesome developer should place this checkbox there or he should make a solution by disabling all such logging if user deactivates all feedback.
Plasmashell now disables these warnings internally. >There is a KCM panel "User Feedback" in Systemsetting. I don't think we want to conflate local logs with telemetry. They're very different things.
*** This bug has been marked as a duplicate of bug 424259 ***