Bug 363590

Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-22-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
Plasma crash after screen goes stand-by or hdmi plug-in/out.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe4e27ff8c0 (LWP 6823))]

Thread 8 (Thread 0x7fe4cda13700 (LWP 6826)):
#0  0x00007fe4dcf08e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe4e0fcdc62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fe4cda12c00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007fe4e0fcdc62 in _xcb_conn_wait (c=c@entry=0x2200110, cond=cond@entry=0x2200150, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x00007fe4e0fcf8d7 in xcb_wait_for_event (c=0x2200110) at ../../src/xcb_in.c:693
#4  0x00007fe4cfb61629 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5  0x00007fe4dd5fe84e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe4cda13700) at pthread_create.c:333
#7  0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fe4c71d2700 (LWP 6828)):
#0  0x00007fe4dcf08e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe4d9c9e31c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fe4c0003070, timeout=<optimized out>, context=0x7fe4c0000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fe4d9c9e31c in g_main_context_iterate (context=context@entry=0x7fe4c0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fe4d9c9e42c in g_main_context_iteration (context=0x7fe4c0000990, may_block=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fe4dd835a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe4dd7dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe4dd5f98a4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe4dfea13c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fe4dd5fe84e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe4c71d2700) at pthread_create.c:333
#10 0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fe4bbbb7700 (LWP 6829)):
#0  0x00007fe4dcf08e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe4d9c9e31c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fe4b4002e70, timeout=<optimized out>, context=0x7fe4b4000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fe4d9c9e31c in g_main_context_iterate (context=context@entry=0x7fe4b4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fe4d9c9e42c in g_main_context_iteration (context=0x7fe4b4000990, may_block=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fe4dd835a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe4dd7dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe4dd5f98a4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe4dfea13c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fe4dd5fe84e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe4bbbb7700) at pthread_create.c:333
#10 0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fe4b9e14700 (LWP 6830)):
#0  0x00007fe4dcf08e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe4d9c9e31c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fe4ac003070, timeout=<optimized out>, context=0x7fe4ac000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fe4d9c9e31c in g_main_context_iterate (context=context@entry=0x7fe4ac000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fe4d9c9e42c in g_main_context_iteration (context=0x7fe4ac000990, may_block=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fe4dd835a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe4dd7dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe4dd5f98a4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe4dfea13c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fe4dd5fe84e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe4b9e14700) at pthread_create.c:333
#10 0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fe4b3fff700 (LWP 6831)):
#0  0x00007fe4dc6f13a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe4e2246bd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fe4e2246c19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe4b3fff700) at pthread_create.c:333
#4  0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fe4b19ba700 (LWP 6832)):
#0  0x00007fe4dcf08e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe4d9c9e31c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fe428003120, timeout=<optimized out>, context=0x7fe428000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fe4d9c9e31c in g_main_context_iterate (context=context@entry=0x7fe428000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fe4d9c9e42c in g_main_context_iteration (context=0x7fe428000990, may_block=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fe4dd835a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe4dd7dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe4dd5f98a4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe4e0827ed6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fe4dd5fe84e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe4b19ba700) at pthread_create.c:333
#10 0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fe41acce700 (LWP 6834)):
#0  0x00007fe4d9ce2a49 in g_mutex_lock (mutex=mutex@entry=0x7fe414000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gthread-posix.c:1338
#1  0x00007fe4d9c9dd5c in g_main_context_check (context=context@entry=0x7fe414000990, max_priority=2147483647, fds=fds@entry=0x7fe4140048c0, n_fds=n_fds@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3683
#2  0x00007fe4d9c9e2c0 in g_main_context_iterate (context=context@entry=0x7fe414000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3837
#3  0x00007fe4d9c9e42c in g_main_context_iteration (context=0x7fe414000990, may_block=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fe4dd835a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe4dd7dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe4dd5f98a4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe41d1ae7d7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fe4dd5fe84e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe4dc6eb6fa in start_thread (arg=0x7fe41acce700) at pthread_create.c:333
#10 0x00007fe4dcf14b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fe4e27ff8c0 (LWP 6823)):
[KCrash Handler]
#6  0x00007fe4e0d45420 in Plasma::Applet::actions() const () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#7  0x00000000004559b2 in ShellCorona::addOutput(QSharedPointer<KScreen::Output> const&) ()
#8  0x0000000000455b4f in ShellCorona::outputEnabledChanged() ()
#9  0x00007fe4dd80de4f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe4e19c6c59 in KScreen::Output::apply(QSharedPointer<KScreen::Output> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#11 0x00007fe4e19b65d5 in KScreen::Config::apply(QSharedPointer<KScreen::Config> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#12 0x00007fe4e19bbcc9 in KScreen::ConfigMonitor::Private::updateConfigs(QSharedPointer<KScreen::Config> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#13 0x00007fe4e19bd8ad in KScreen::ConfigMonitor::Private::edidReady(QDBusPendingCallWatcher*) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#14 0x00007fe4dd80de4f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fe4e2985f6f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#16 0x00007fe4e2987645 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#17 0x00007fe4dd80eea1 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fe4de2e205c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fe4de2e7516 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fe4dd7df62b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fe4dd7e1a26 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fe4dd835673 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fe4d9c9e127 in g_main_context_dispatch (context=0x7fe4c80016f0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3154
#24 0x00007fe4d9c9e127 in g_main_context_dispatch (context=context@entry=0x7fe4c80016f0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3769
#25 0x00007fe4d9c9e380 in g_main_context_iterate (context=context@entry=0x7fe4c80016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3840
#26 0x00007fe4d9c9e42c in g_main_context_iteration (context=0x7fe4c80016f0, may_block=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#27 0x00007fe4dd835a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fe4dd7dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fe4dd7e4e8c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x0000000000432d4a in main ()

Possible duplicates by query: bug 363556, bug 363125, bug 362745, bug 362635, bug 362552.

Reported using DrKonqi