Application: plasmashell (5.5.5) Qt Version: 5.5.1 Operating System: Linux 4.8.7-ck7+ x86_64 Distribution: Ubuntu 16.04.1 LTS -- Information about the crash: - What I was doing when the application crashed: I had opened a second user session with sddm and after using that session switched back to the first session with ctrl-alt-F7 and plasmashell had crashed sometime between switching to and from the other session. The monitor attached is a 4k monitor which requires two panels setup for each virtual screen that corresponds to each half of the 4k monitor and one panel tends to regularly disappear mandating a plasmashell restart which I had performed half a dozen times already before this crash appeared. -- Backtrace: Application: Plasma (plasmashell), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 [Current thread is 1 (Thread 0x7f58f40d98c0 (LWP 27260))] Thread 8 (Thread 0x7f583dbf7700 (LWP 27270)): [KCrash Handler] #6 0x00007f58ee7a150d in __strstr_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strstr-sse2-unaligned.S:40 #7 0x00007f58f2164aca in QSGRenderContext::initialize(QOpenGLContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007f58f2188409 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #9 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x198faf0) at thread/qthread_unix.cpp:331 #10 0x00007f58edfd570a in start_thread (arg=0x7f583dbf7700) at pthread_create.c:333 #11 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 7 (Thread 0x7f583e3f8700 (LWP 27269)): #0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f58eb58839c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f5838003060, timeout=<optimized out>, context=0x7f5838000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135 #2 0x00007f58eb58839c in g_main_context_iterate (context=context@entry=0x7f5838000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835 #3 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f5838000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007f58ef11f7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f58380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007f58ef0c6b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f583e3f7c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f58f2111ed6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x1a81cd0) at thread/qthread_unix.cpp:331 #9 0x00007f58edfd570a in start_thread (arg=0x7f583e3f8700) at pthread_create.c:333 #10 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 6 (Thread 0x7f58c5109700 (LWP 27268)): #0 0x00007f58edfdb3b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f58f3b30bd4 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #2 0x00007f58f3b30c19 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #3 0x00007f58edfd570a in start_thread (arg=0x7f58c5109700) at pthread_create.c:333 #4 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7f58c694d700 (LWP 27267)): #0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f58eb58839c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f58c0003070, timeout=<optimized out>, context=0x7f58c0000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135 #2 0x00007f58eb58839c in g_main_context_iterate (context=context@entry=0x7f58c0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835 #3 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58c0000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007f58ef11f7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f58c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007f58ef0c6b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f58c694cce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f58f178b3c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x1673450) at thread/qthread_unix.cpp:331 #9 0x00007f58edfd570a in start_thread (arg=0x7f58c694d700) at pthread_create.c:333 #10 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7f58ccae3700 (LWP 27266)): #0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f58eb58839c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f58c8002e70, timeout=<optimized out>, context=0x7f58c8000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135 #2 0x00007f58eb58839c in g_main_context_iterate (context=context@entry=0x7f58c8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835 #3 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58c8000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007f58ef11f7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f58c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007f58ef0c6b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f58ccae2ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f58f178b3c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x15eb170) at thread/qthread_unix.cpp:331 #9 0x00007f58edfd570a in start_thread (arg=0x7f58ccae3700) at pthread_create.c:333 #10 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f58dd3f8700 (LWP 27265)): #0 0x00007f58f40a987b in _dl_update_slotinfo (req_modid=1) at dl-tls.c:645 #1 0x00007f58f40a9aac in update_get_addr (ti=0x7f58ef313788) at dl-tls.c:802 #2 0x00007f58eeee7702 in QThreadData::current(bool) () at thread/qthread_unix.cpp:181 #3 0x00007f58eeee7702 in QThreadData::current(bool) (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:212 #4 0x00007f58ef11ed4a in postEventSourcePrepare(GSource*, gint*) (s=0x7f58d00012d0, timeout=timeout@entry=0x7f58dd3f7b24) at kernel/qeventdispatcher_glib.cpp:247 #5 0x00007f58eb58792d in g_main_context_prepare (context=context@entry=0x7f58d0000990, priority=priority@entry=0x7f58dd3f7bb0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3442 #6 0x00007f58eb5882cb in g_main_context_iterate (context=context@entry=0x7f58d0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820 #7 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58d0000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #8 0x00007f58ef11f7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f58d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #9 0x00007f58ef0c6b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f58dd3f7ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #10 0x00007f58eeee3834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #11 0x00007f58f178b3c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #12 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x12fd210) at thread/qthread_unix.cpp:331 #13 0x00007f58edfd570a in start_thread (arg=0x7f58dd3f8700) at pthread_create.c:333 #14 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f58e048d700 (LWP 27263)): #0 0x00007f58ee7f2b5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f58f28b7c62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f58e048cc00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46 #2 0x00007f58f28b7c62 in _xcb_conn_wait (c=c@entry=0x1206e30, cond=cond@entry=0x1206e70, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459 #3 0x00007f58f28b98d7 in xcb_wait_for_event (c=0x1206e30) at ../../src/xcb_in.c:693 #4 0x00007f58e2c0d629 in QXcbEventReader::run() (this=0x1214fe0) at qxcbconnection.cpp:1253 #5 0x00007f58eeee87be in QThreadPrivate::start(void*) (arg=0x1214fe0) at thread/qthread_unix.cpp:331 #6 0x00007f58edfd570a in start_thread (arg=0x7f58e048d700) at pthread_create.c:333 #7 0x00007f58ee7fe82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f58f40d98c0 (LWP 27260)): #0 0x00007f58edfdb3b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f58eeee9a5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x19d2dc0) at thread/qwaitcondition_unix.cpp:136 #2 0x00007f58eeee9a5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x198fb30, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007f58f2184bc6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007f58f218709c in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007f58f2187733 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #6 0x00007f58ef4142b5 in QWindow::event(QEvent*) (this=0x1985f60, ev=<optimized out>) at kernel/qwindow.cpp:2060 #7 0x00007f58f21ba871 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x000000000043f206 in DesktopView::event(QEvent*) (this=0x1985f60, e=0x7fffc45619e0) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/desktopview.cpp:205 #9 0x00007f58efbcc05c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x11f4380, receiver=receiver@entry=0x1985f60, e=e@entry=0x7fffc45619e0) at kernel/qapplication.cpp:3716 #10 0x00007f58efbd1516 in QApplication::notify(QObject*, QEvent*) (this=0x7fffc4561e00, receiver=0x1985f60, e=0x7fffc45619e0) at kernel/qapplication.cpp:3499 #11 0x00007f58ef0c938b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7fffc4561e00, receiver=receiver@entry=0x1985f60, event=event@entry=0x7fffc45619e0) at kernel/qcoreapplication.cpp:965 #12 0x00007f58ef40c4ac in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (event=0x7fffc45619e0, receiver=0x1985f60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227 #13 0x00007f58ef40c4ac in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x1a89cb0) at kernel/qguiapplication.cpp:2663 #14 0x00007f58ef40d21d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x1a89cb0) at kernel/qguiapplication.cpp:1658 #15 0x00007f58ef3f0f08 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at kernel/qwindowsysteminterface.cpp:625 #16 0x00007f58e2c3f060 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70 #17 0x00007f58eb5881a7 in g_main_context_dispatch (context=0x7f58d80016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154 #18 0x00007f58eb5881a7 in g_main_context_dispatch (context=context@entry=0x7f58d80016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769 #19 0x00007f58eb588400 in g_main_context_iterate (context=context@entry=0x7f58d80016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3840 #20 0x00007f58eb5884ac in g_main_context_iteration (context=0x7f58d80016f0, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #21 0x00007f58ef11f7cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1245fe0, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #22 0x00007f58ef0c6b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffc4561ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #23 0x00007f58ef0cebec in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229 #24 0x00007f58ef402bfc in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1542 #25 0x00007f58efbc8495 in QApplication::exec() () at kernel/qapplication.cpp:2976 #26 0x0000000000432d4a in main(int, char**) (argc=3, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181 Reported using DrKonqi
2 other drkonqi crashes happened at the same time. This is the backtrace of the first one: Application: Plasma (plasmashell), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 [Current thread is 1 (Thread 0x7fc54f5958c0 (LWP 27248))] Thread 8 (Thread 0x7fc51d188700 (LWP 27258)): [KCrash Handler] #6 0x00007fc549c5d50d in __strstr_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strstr-sse2-unaligned.S:40 #7 0x00007fc54d620aca in QSGRenderContext::initialize(QOpenGLContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007fc54d644409 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #9 0x00007fc54a3a47be in QThreadPrivate::start(void*) (arg=0x17c3290) at thread/qthread_unix.cpp:331 #10 0x00007fc54949170a in start_thread (arg=0x7fc51d188700) at pthread_create.c:333 #11 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 7 (Thread 0x7fc51d989700 (LWP 27257)): #0 0x00007fc546a43ae0 in g_main_context_prepare (context=context@entry=0x7fc494000990, priority=priority@entry=0x7fc51d988b60) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3471 #1 0x00007fc546a442cb in g_main_context_iterate (context=context@entry=0x7fc494000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820 #2 0x00007fc546a444ac in g_main_context_iteration (context=0x7fc494000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #3 0x00007fc54a5db7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fc4940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #4 0x00007fc54a582b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fc51d988c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #5 0x00007fc54a39f834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #6 0x00007fc54d5cded6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #7 0x00007fc54a3a47be in QThreadPrivate::start(void*) (arg=0x178e770) at thread/qthread_unix.cpp:331 #8 0x00007fc54949170a in start_thread (arg=0x7fc51d989700) at pthread_create.c:333 #9 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 6 (Thread 0x7fc51ffff700 (LWP 27256)): #0 0x00007fc5494973b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fc54efecbd4 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #2 0x00007fc54efecc19 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #3 0x00007fc54949170a in start_thread (arg=0x7fc51ffff700) at pthread_create.c:333 #4 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7fc525f3e700 (LWP 27255)): #0 0x00007fc549caeb5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007fc546a4439c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fc518003070, timeout=<optimized out>, context=0x7fc518000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135 #2 0x00007fc546a4439c in g_main_context_iterate (context=context@entry=0x7fc518000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835 #3 0x00007fc546a444ac in g_main_context_iteration (context=0x7fc518000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007fc54a5db7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fc5180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007fc54a582b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fc525f3dce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007fc54a39f834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007fc54cc473c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007fc54a3a47be in QThreadPrivate::start(void*) (arg=0x14bd6a0) at thread/qthread_unix.cpp:331 #9 0x00007fc54949170a in start_thread (arg=0x7fc525f3e700) at pthread_create.c:333 #10 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7fc528101700 (LWP 27254)): #0 0x00007fc546a88ae4 in g_mutex_unlock (mutex=0x7fc520000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347 #1 0x00007fc546a44356 in g_main_context_iterate (context=context@entry=0x7fc520000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3842 #2 0x00007fc546a444ac in g_main_context_iteration (context=0x7fc520000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #3 0x00007fc54a5db7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fc5200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #4 0x00007fc54a582b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fc528100ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #5 0x00007fc54a39f834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #6 0x00007fc54cc473c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007fc54a3a47be in QThreadPrivate::start(void*) (arg=0x12ecd40) at thread/qthread_unix.cpp:331 #8 0x00007fc54949170a in start_thread (arg=0x7fc528101700) at pthread_create.c:333 #9 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7fc5388b4700 (LWP 27253)): #0 0x00007fc549caa69d in read () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007fc546a87740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fc5388b3ae0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44 #2 0x00007fc546a87740 in g_wakeup_acknowledge (wakeup=0x7fc5340015b0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210 #3 0x00007fc546a43e84 in g_main_context_check (context=context@entry=0x7fc52c000990, max_priority=2147483647, fds=fds@entry=0x7fc52c003070, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632 #4 0x00007fc546a44340 in g_main_context_iterate (context=context@entry=0x7fc52c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837 #5 0x00007fc546a444ac in g_main_context_iteration (context=0x7fc52c000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #6 0x00007fc54a5db7eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fc52c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #7 0x00007fc54a582b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fc5388b3ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #8 0x00007fc54a39f834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #9 0x00007fc54cc473c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #10 0x00007fc54a3a47be in QThreadPrivate::start(void*) (arg=0xfcf4a0) at thread/qthread_unix.cpp:331 #11 0x00007fc54949170a in start_thread (arg=0x7fc5388b4700) at pthread_create.c:333 #12 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7fc53b949700 (LWP 27251)): #0 0x00007fc549caeb5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007fc54dd73c62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fc53b948c00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46 #2 0x00007fc54dd73c62 in _xcb_conn_wait (c=c@entry=0xed8e30, cond=cond@entry=0xed8e70, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459 #3 0x00007fc54dd758d7 in xcb_wait_for_event (c=0xed8e30) at ../../src/xcb_in.c:693 #4 0x00007fc53e0c9629 in QXcbEventReader::run() (this=0xee6fe0) at qxcbconnection.cpp:1253 #5 0x00007fc54a3a47be in QThreadPrivate::start(void*) (arg=0xee6fe0) at thread/qthread_unix.cpp:331 #6 0x00007fc54949170a in start_thread (arg=0x7fc53b949700) at pthread_create.c:333 #7 0x00007fc549cba82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7fc54f5958c0 (LWP 27248)): #0 0x00007fc5494973b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fc54a3a5a5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x16df450) at thread/qwaitcondition_unix.cpp:136 #2 0x00007fc54a3a5a5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x17c32d0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007fc54d640bc6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007fc54d64309c in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007fc54d643733 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #6 0x00007fc54a8d02b5 in QWindow::event(QEvent*) (this=0x16a4340, ev=<optimized out>) at kernel/qwindow.cpp:2060 #7 0x00007fc54d676871 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x000000000043f206 in DesktopView::event(QEvent*) (this=0x16a4340, e=0x7ffca53d1b30) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/desktopview.cpp:205 #9 0x00007fc54b08805c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0xec6380, receiver=receiver@entry=0x16a4340, e=e@entry=0x7ffca53d1b30) at kernel/qapplication.cpp:3716 #10 0x00007fc54b08d516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffca53d1f50, receiver=0x16a4340, e=0x7ffca53d1b30) at kernel/qapplication.cpp:3499 #11 0x00007fc54a58538b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffca53d1f50, receiver=receiver@entry=0x16a4340, event=event@entry=0x7ffca53d1b30) at kernel/qcoreapplication.cpp:965 #12 0x00007fc54a8c84ac in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (event=0x7ffca53d1b30, receiver=0x16a4340) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227 #13 0x00007fc54a8c84ac in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x1693a10) at kernel/qguiapplication.cpp:2663 #14 0x00007fc54a8c921d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x1693a10) at kernel/qguiapplication.cpp:1658 #15 0x00007fc54a8acf08 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at kernel/qwindowsysteminterface.cpp:625 #16 0x00007fc53e0fb060 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70 #17 0x00007fc546a441a7 in g_main_context_dispatch (context=0x7fc5340016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154 #18 0x00007fc546a441a7 in g_main_context_dispatch (context=context@entry=0x7fc5340016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769 #19 0x00007fc546a44400 in g_main_context_iterate (context=context@entry=0x7fc5340016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3840 #20 0x00007fc546a444ac in g_main_context_iteration (context=0x7fc5340016f0, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #21 0x00007fc54a5db7cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0xf10490, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #22 0x00007fc54a582b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffca53d1df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #23 0x00007fc54a58abec in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229 #24 0x00007fc54a8bebfc in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1542 #25 0x00007fc54b084495 in QApplication::exec() () at kernel/qapplication.cpp:2976 #26 0x0000000000432d4a in main(int, char**) (argc=3, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181
And this is the backtrace of the second one. Application: Plasma (plasmashell), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 [Current thread is 1 (Thread 0x7f439420f8c0 (LWP 26983))] Thread 13 (Thread 0x7f42ad0ad700 (LWP 27246)): [KCrash Handler] #6 0x00007f438e8d750d in __strstr_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strstr-sse2-unaligned.S:40 #7 0x00007f439229aaca in QSGRenderContext::initialize(QOpenGLContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007f43922be409 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #9 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x4224200) at thread/qthread_unix.cpp:331 #10 0x00007f438e10b70a in start_thread (arg=0x7f42ad0ad700) at pthread_create.c:333 #11 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 12 (Thread 0x7f42b75fe700 (LWP 27005)): #0 0x00007f438e1113b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x378ba60) at thread/qwaitcondition_unix.cpp:136 #2 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x3de8520, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007f43922bd92e in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007f43922be1b3 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x3de84a0) at thread/qthread_unix.cpp:331 #6 0x00007f438e10b70a in start_thread (arg=0x7f42b75fe700) at pthread_create.c:333 #7 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 11 (Thread 0x7f42b7fff700 (LWP 27004)): #0 0x00007f438e1113b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x28b7bf0) at thread/qwaitcondition_unix.cpp:136 #2 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x28abee0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007f43922bd92e in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007f43922be1b3 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x28abe60) at thread/qthread_unix.cpp:331 #6 0x00007f438e10b70a in start_thread (arg=0x7f42b7fff700) at pthread_create.c:333 #7 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 10 (Thread 0x7f42bd771700 (LWP 26996)): #0 0x00007f438e92469d in read () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f438b701740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f42bd770ac0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44 #2 0x00007f438b701740 in g_wakeup_acknowledge (wakeup=0x7f42cc002750) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210 #3 0x00007f438b6bde84 in g_main_context_check (context=context@entry=0x7f42b8000990, max_priority=2147483647, fds=fds@entry=0x7f42b80048c0, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632 #4 0x00007f438b6be340 in g_main_context_iterate (context=context@entry=0x7f42b8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3837 #5 0x00007f438b6be4ac in g_main_context_iteration (context=0x7f42b8000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #6 0x00007f438f2557eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f42b80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #7 0x00007f438f1fcb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f42bd770cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #8 0x00007f438f019834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #9 0x00007f42bfc4f7d7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so #10 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x3bff580) at thread/qthread_unix.cpp:331 #11 0x00007f438e10b70a in start_thread (arg=0x7f42bd771700) at pthread_create.c:333 #12 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 9 (Thread 0x7f42d5bfe700 (LWP 26993)): #0 0x00007f438e1113b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x292dca0) at thread/qwaitcondition_unix.cpp:136 #2 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2789900, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007f43922bd92e in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007f43922be1b3 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x2789880) at thread/qthread_unix.cpp:331 #6 0x00007f438e10b70a in start_thread (arg=0x7f42d5bfe700) at pthread_create.c:333 #7 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 8 (Thread 0x7f42dd9c0700 (LWP 26992)): #0 0x00007f438e1113b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2851360) at thread/qwaitcondition_unix.cpp:136 #2 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2099770, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007f43922bd92e in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007f43922be1b3 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x20996f0) at thread/qthread_unix.cpp:331 #6 0x00007f438e10b70a in start_thread (arg=0x7f42dd9c0700) at pthread_create.c:333 #7 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 7 (Thread 0x7f42de1c1700 (LWP 26991)): #0 0x00007f438b702ac9 in g_mutex_lock (mutex=mutex@entry=0x7f42d8000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1335 #1 0x00007f438b6be382 in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f42d8003060, timeout=<optimized out>, context=0x7f42d8000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4130 #2 0x00007f438b6be382 in g_main_context_iterate (context=context@entry=0x7f42d8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835 #3 0x00007f438b6be4ac in g_main_context_iteration (context=0x7f42d8000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007f438f2557eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f42d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007f438f1fcb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f42de1c0c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f438f019834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f4392247ed6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x29402d0) at thread/qthread_unix.cpp:331 #9 0x00007f438e10b70a in start_thread (arg=0x7f42de1c1700) at pthread_create.c:333 #10 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 6 (Thread 0x7f4364eb9700 (LWP 26990)): #0 0x00007f438e1113b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f4393c66bd4 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #2 0x00007f4393c66c19 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #3 0x00007f438e10b70a in start_thread (arg=0x7f4364eb9700) at pthread_create.c:333 #4 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7f4366744700 (LWP 26988)): #0 0x00007f438b702ae4 in g_mutex_unlock (mutex=0x7f4360000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347 #1 0x00007f438b6bd920 in g_main_context_prepare (context=context@entry=0x7f4360000990, priority=priority@entry=0x7f4366743bb0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3440 #2 0x00007f438b6be2cb in g_main_context_iterate (context=context@entry=0x7f4360000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820 #3 0x00007f438b6be4ac in g_main_context_iteration (context=0x7f4360000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007f438f2557eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f43600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007f438f1fcb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f4366743ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f438f019834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f43918c13c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x2672fd0) at thread/qthread_unix.cpp:331 #9 0x00007f438e10b70a in start_thread (arg=0x7f4366744700) at pthread_create.c:333 #10 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7f436c9ef700 (LWP 26987)): #0 0x00007f438b702ac9 in g_mutex_lock (mutex=mutex@entry=0x7f4368000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1335 #1 0x00007f438b6be35e in g_main_context_iterate (context=context@entry=0x7f4368000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3844 #2 0x00007f438b6be4ac in g_main_context_iteration (context=0x7f4368000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #3 0x00007f438f2557eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f43680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #4 0x00007f438f1fcb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f436c9eece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #5 0x00007f438f019834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #6 0x00007f43918c13c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x248d0c0) at thread/qthread_unix.cpp:331 #8 0x00007f438e10b70a in start_thread (arg=0x7f436c9ef700) at pthread_create.c:333 #9 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f437d52e700 (LWP 26985)): #0 0x00007f438b702ae4 in g_mutex_unlock (mutex=0x7f4370000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347 #1 0x00007f438b6bd920 in g_main_context_prepare (context=context@entry=0x7f4370000990, priority=priority@entry=0x7f437d52dbb0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3440 #2 0x00007f438b6be2cb in g_main_context_iterate (context=context@entry=0x7f4370000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820 #3 0x00007f438b6be4ac in g_main_context_iteration (context=0x7f4370000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #4 0x00007f438f2557eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f43700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x00007f438f1fcb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f437d52dce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x00007f438f019834 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503 #7 0x00007f43918c13c5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x21392f0) at thread/qthread_unix.cpp:331 #9 0x00007f438e10b70a in start_thread (arg=0x7f437d52e700) at pthread_create.c:333 #10 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f43805c3700 (LWP 26984)): #0 0x00007f438e928b5d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f43929edc62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f43805c2c00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46 #2 0x00007f43929edc62 in _xcb_conn_wait (c=c@entry=0x2044e40, cond=cond@entry=0x2044e80, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459 #3 0x00007f43929ef8d7 in xcb_wait_for_event (c=0x2044e40) at ../../src/xcb_in.c:693 #4 0x00007f4382d43629 in QXcbEventReader::run() (this=0x2052fd0) at qxcbconnection.cpp:1253 #5 0x00007f438f01e7be in QThreadPrivate::start(void*) (arg=0x2052fd0) at thread/qthread_unix.cpp:331 #6 0x00007f438e10b70a in start_thread (arg=0x7f43805c3700) at pthread_create.c:333 #7 0x00007f438e93482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f439420f8c0 (LWP 26983)): #0 0x00007f438e1113b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x3d4e7c0) at thread/qwaitcondition_unix.cpp:136 #2 0x00007f438f01fa5b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x4224240, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x00007f43922babc6 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #4 0x00007f43922bd09c in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #5 0x00007f43922bd733 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #6 0x00007f438f54a2b5 in QWindow::event(QEvent*) (this=0x3c35a60, ev=<optimized out>) at kernel/qwindow.cpp:2060 #7 0x00007f43922f0871 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #8 0x00007f4393d972db in PlasmaQuick::Dialog::event(QEvent*) (this=0x3c35a60, event=0x7ffd7192a1b0) at /build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/plasmaquick/dialog.cpp:1168 #9 0x00007f438fd0205c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x2032380, receiver=receiver@entry=0x3c35a60, e=e@entry=0x7ffd7192a1b0) at kernel/qapplication.cpp:3716 #10 0x00007f438fd07516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffd7192a5d0, receiver=0x3c35a60, e=0x7ffd7192a1b0) at kernel/qapplication.cpp:3499 #11 0x00007f438f1ff38b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffd7192a5d0, receiver=receiver@entry=0x3c35a60, event=event@entry=0x7ffd7192a1b0) at kernel/qcoreapplication.cpp:965 #12 0x00007f438f5424ac in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (event=0x7ffd7192a1b0, receiver=0x3c35a60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227 #13 0x00007f438f5424ac in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x45146a0) at kernel/qguiapplication.cpp:2663 #14 0x00007f438f54321d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x45146a0) at kernel/qguiapplication.cpp:1658 #15 0x00007f438f526f08 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at kernel/qwindowsysteminterface.cpp:625 #16 0x00007f4382d75060 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70 #17 0x00007f438b6be1a7 in g_main_context_dispatch (context=0x7f43780016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154 #18 0x00007f438b6be1a7 in g_main_context_dispatch (context=context@entry=0x7f43780016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769 #19 0x00007f438b6be400 in g_main_context_iterate (context=context@entry=0x7f43780016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3840 #20 0x00007f438b6be4ac in g_main_context_iteration (context=0x7f43780016f0, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901 #21 0x00007f438f2557cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x207ec60, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #22 0x00007f438f1fcb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd7192a470, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #23 0x00007f438f204bec in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229 #24 0x00007f438f538bfc in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1542 #25 0x00007f438fcfe495 in QApplication::exec() () at kernel/qapplication.cpp:2976 #26 0x0000000000432d4a in main(int, char**) (argc=1, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181
*** This bug has been marked as a duplicate of bug 348812 ***