Package: kwin-x11 Version: 4:5.4.0-2 Severity: normal I can login to plasma via sddm quite fine when I have my laptop removed from the docking station. But when I start kwin_x11 or plasma via sddm when I have it inside the docking station (2x HDMI) it will crash. I have no idea how to get a backtrace from these situation.
But it was possible for me to start openbox via sddm. Then I've activated via xrandr both HDMI outputs and disabled the laptop screen. I could then run kwin_x11 --replace The crash backtrace program started and showed me following: Application: KWin (kwin_x11), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f8e0d8d9940 (LWP 5157))] Thread 2 (Thread 0x7f8df61bd700 (LWP 5159)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x00007f8e0b80d436 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007f8e0b808fa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #3 0x00007f8e0b80c25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f8e0ca330a4 in start_thread (arg=0x7f8df61bd700) at pthread_create.c:309 #5 0x00007f8e0d3e007d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 1 (Thread 0x7f8e0d8d9940 (LWP 5157)): [KCrash Handler] #4 0x00007f8e0b556a50 in xcb_setup_vendor_end () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #5 0x00007f8e0b556aa9 in xcb_setup_pixmap_formats_iterator () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #6 0x00007f8e0b556ae9 in xcb_setup_roots_iterator () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #7 0x00007f8e0ceea0e6 in ?? () from /usr/lib/x86_64-linux-gnu/libkwin.so.5 #8 0x00007f8e0cef3b81 in KWin::Workspace::Workspace(QString const&) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5 #9 0x00007f8e0cf2e4e0 in KWin::Application::createWorkspace() () from /usr/lib/x86_64-linux-gnu/libkwin.so.5 #10 0x00007f8e0d6a6f3c in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so #11 0x00007f8e0ba1c187 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #12 0x00007f8e0c806fbb in KSelectionOwner::Private::claimSucceeded() () from /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5 #13 0x00007f8e0c8077cc in KSelectionOwner::filterEvent(void*) () from /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5 #14 0x00007f8e0b9e845f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #15 0x00007f8df6c61c1e in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so #16 0x00007f8df6c62c73 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so #17 0x00007f8e0ba1d1c1 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007f8e0c2b9b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #19 0x00007f8e0c2bf230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #20 0x00007f8e0b9eba8b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #21 0x00007f8e0b9edbc7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #22 0x00007f8e0ba403b2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #23 0x00007f8df6cb68ed in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so #24 0x00007f8e0b9e92ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #25 0x00007f8e0b9f0e3c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #26 0x00007f8e0d6a84c4 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so #27 0x00007f8e0d31bb45 in __libc_start_main (main=0x4007a0 <main>, argc=2, argv=0x7ffee8004528, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffee8004518) at libc-start.c:287 #28 0x00000000004007ce in _start () All packages are from unstable from today. No packages from testing/experimental/stable (I've checked twice with apt-show-versions). No manually installed packages. --- System information. --- Architecture: amd64 Kernel: Linux 4.1.0-2-amd64 Debian Release: stretch/sid 500 unstable httpredir.debian.org
