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Created attachment 1151362 [details] hello_world.qml Description of problem: The beginners (and also me) usually starts with console.log("hello world"). In new version of Qt, there was newly introduced QLoggingCategory [1] which allow configuration of verbosity during debugging. [1] http://doc.qt.io/qt-5/qloggingcategory.html Reproducer: qmlscene hello_world.qml Expected Result at stdout: hello log hello debug Current result output at stdout is empty. I suggest to add following configuration into .bash_rc (or /etc/profile) during of installation of qt5-base-devel (or qt5-devel or any other suitable) package: export "QT_LOGGING_RULES=*=true qt.*=false"
see bug #1227295 for some history. The kde-sig policy decision on distribution default is to show no debug logging via qtlogging.ini : [Rules] *.debug=false which we know is different from upstream's default of (essentially, I think): qt.debug=false You're welcome to start a conversation on https://lists.fedoraproject.org/admin/lists/kde.lists.fedoraproject.org/ if you feel like we should consider otherwise.
Thank you for explanation and recommendation. I am sorry that I didn't found the ticket previously.