Hi all, I'm getting several core dumps from drkonqui; I don't know when it is fired up or by which app. The only other core dump I have in my dir refers to xembedsniproxy (already reported). Below you can find a backtrace from core dump, even if I don't know if this can be useful to debug the issue. If more info can be useful, just let me know. Thanks. Reproducible: Always Core was generated by `/usr/lib64/libexec/drkonqi -platform xcb -display :0 --appname klauncher --appp'. Program terminated with signal SIGABRT, Aborted. #0 0x00007f60e1429308 in raise () from /lib64/libc.so.6 (gdb) bt #0 0x00007f60e1429308 in raise () from /lib64/libc.so.6 #1 0x00007f60e142a75a in abort () from /lib64/libc.so.6 #2 0x00007f60e1ba2cc9 in QMessageLogger::fatal(char const*, ...) const () from /usr/lib64/libQt5Core.so.5 #3 0x00007f60da4c2464 in QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) () from /usr/lib64/libQt5XcbQpa.so.5 #4 0x00007f60da4c7c5d in QXcbIntegration::QXcbIntegration(QStringList const&, int&, char**) () from /usr/lib64/libQt5XcbQpa.so.5 #5 0x00007f60e4a7b30d in ?? () from /usr/lib64/qt5/plugins/platforms/libqxcb.so #6 0x00007f60e20124b2 in QPlatformIntegrationFactory::create(QString const&, QStringList const&, int&, char**, QString const&) () from /usr/lib64/libQt5Gui.so.5 #7 0x00007f60e201cb33 in QGuiApplicationPrivate::createPlatformIntegration() () from /usr/lib64/libQt5Gui.so.5 #8 0x00007f60e201dabd in QGuiApplicationPrivate::createEventDispatcher() () from /usr/lib64/libQt5Gui.so.5 #9 0x00007f60e1cdf514 in QCoreApplication::init() () from /usr/lib64/libQt5Core.so.5 #10 0x00007f60e1cdf596 in QCoreApplication::QCoreApplication(QCoreApplicationPrivate&) () from /usr/lib64/libQt5Core.so.5 #11 0x00007f60e2020009 in QGuiApplication::QGuiApplication(QGuiApplicationPrivate&) () from /usr/lib64/libQt5Gui.so.5 #12 0x00007f60e27ec34d in QApplication::QApplication(int&, char**, int) () from /usr/lib64/libQt5Widgets.so.5 #13 0x0000000000433cc9 in main (argc=11, argv=0x7ffc00a09b78) at /usr/src/debug/kde-plasma/plasma-workspace-5.5.4/plasma-workspace-5.5.4/drkonqi/main.cpp:59
The Qt XCB backend seems to fail to start up. Unfortunately the backtrace on its own isn't too useful, so I doubt anyone will be able to figure out what went wrong years after the fact.