Bug 405867

Summary: Discover crashes when launched from update tasktray icon
Product: [Applications] Discover Reporter: Sam <natrox>
Component: discoverAssignee: Dan Leinir Turthra Jensen <leinir>
Status: RESOLVED DUPLICATE    
Severity: crash CC: aleixpol
Priority: NOR Keywords: drkonqi
Version: 5.13.5   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Sam 2019-03-25 20:33:55 UTC 
Application: plasma-discover (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.20.17-042017-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
I got this crash when I attempted to launch Discover from the update notification systray icon. 

Repro steps:
1. Observe that there were available updates (4 in my case).
2. Click systray icon. 
3. Click "Update" in the dialog that appears.

Notes:
* The program appears to crash early in its UI routine as the shape of the window seems to appear (visually - I have not inspected the callstack).

If you need more information, please let me know. I do not know if the issue persists after reboot, will update after trying that.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7e8f70bc80 (LWP 21131))]

Thread 11 (Thread 0x7f7e5ffff700 (LWP 21142)):
#0  0x00007f7e94d8c219 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f7e950a3c25 in QBasicMutex::lockInternal() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f7e946b367b in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#3  0x00007f7e946b3e95 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f7e9468e5a8 in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f7e9468f280 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007f7e94696489 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f7e952826db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7e946583c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007f7e9465b230 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f7e9466a37d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f7e960b34a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f7e960baae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f7e95259499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f7e952abd6a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f7e92ae7c3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f7e92ae7ed8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f7e952ab15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7e950a70b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#23 0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f7e70b03700 (LWP 21140)):
#0  0x00007f7e94d81f64 in __GI___libc_read (fd=25, buf=0x7f7e70b02cd0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f7e92b2d180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7e92ae791f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7e92ae7df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7e92ae81d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7e7295f7b6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f7e92b10135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f7e71304700 (LWP 21139)):
#0  0x00007f7e94d866d9 in __GI___poll (fds=0x55b6e85c6f70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7e92ae7e46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7e92ae7fb1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7e92b10135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f7e73533700 (LWP 21138)):
#0  0x00007f7e93e40846 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f7e73532c50, expected=0, futex_word=0x7f7e68005f34) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f7e93e40846 in __pthread_cond_wait_common (abstime=0x7f7e73532d10, mutex=0x7f7e68005ee0, cond=0x7f7e68005f08) at pthread_cond_wait.c:533
#2  0x00007f7e93e40846 in __pthread_cond_timedwait (cond=0x7f7e68005f08, mutex=0x7f7e68005ee0, abstime=0x7f7e73532d10) at pthread_cond_wait.c:667
#3  0x00007f7e950b131c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7e950a9182 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#7  0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f7e73d34700 (LWP 21137)):
#0  0x00007f7e94d8c219 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f7e950a5cf4 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f7e95282978 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f7e946be2a2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f7e946bf08c in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f7e952826db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7e946bd2f2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f7e9460cf55 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f7e9460e6bc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007f7e952826db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7e9468d972 in QSslSocket::preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*) () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f7e946b337a in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007f7e7c05881e in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#13 0x00007f7e7c056829 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#14 0x00007f7e7c060904 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#15 0x00007f7e7c05f80f in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#16 0x00007f7e7c04b854 in SSL_do_handshake () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#17 0x00007f7e946b3af5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#18 0x00007f7e946b3e95 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#19 0x00007f7e9468e5a8 in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#20 0x00007f7e9468f280 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#21 0x00007f7e94696489 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#22 0x00007f7e952826db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f7e946583c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#24 0x00007f7e9465b230 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#25 0x00007f7e9466a37d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#26 0x00007f7e960b34a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f7e960baae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f7e95259499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f7e952abd6a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f7e92ae7c3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f7e92ae7ed8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f7e952ab143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f7e950a70b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#38 0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f7e7c91c700 (LWP 21136)):
#0  0x00007f7e94d81f64 in __GI___libc_read (fd=15, buf=0x7f7e7c91bb80, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f7e92b2d180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7e92ae791f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7e92ae7df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7e952ab15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7e950a70b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7e7e393700 (LWP 21135)):
#0  0x00007f7e92ae4d30 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7e92ae72b3 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7e92ae7d7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7e952ab15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7e950a70b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7e96af4396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7e86d5d700 (LWP 21134)):
#0  0x00007f7e94d866d9 in __GI___poll (fds=0x7f7e78004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7e92ae7e46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7e952ab15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7e950a70b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7e958991f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7e87f6e700 (LWP 21133)):
#0  0x00007ffd93de4977 in  ()
#1  0x00007f7e94da19f6 in __GI___clock_gettime (clock_id=1, tp=0x7f7e87f6dab0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f7e952aaa81 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f7e952a92b9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7e952a98b5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7e952aaede in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7e92ae7379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f7e92ae7d7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f7e92ae7f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f7e952ab15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7e950a70b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f7e965c4545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#15 0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7e8dc7b700 (LWP 21132)):
#0  0x00007f7e94d866d9 in __GI___poll (fds=0x7f7e8dc7acb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7e92a7c917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7e92a7e53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7e8f040159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f7e950b0c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7e93e3a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f7e94d92def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7e8f70bc80 (LWP 21131)):
[KCrash Handler]
#6  0x00007f7e94cb9077 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f7e94c9a535 in __GI_abort () at abort.c:79
#8  0x00007f7e9506f8d7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7e96b58eed in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f7e96b59f69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f7e96b5a675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f7e95b05b05 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f7e96bd487b in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f7e960b34a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f7e960baae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f7e95259499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f7e95afa7e3 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f7e95afb4bd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f7e95ad5b6b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f7e8f0d1e5b in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f7e9525816b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f7e952602e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000055b6e5922ae3 in  ()
#24 0x00007f7e94c9c09b in __libc_start_main (main=0x55b6e5922510, argc=3, argv=0x7ffd93d793e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd93d793d8) at ../csu/libc-start.c:308
#25 0x000055b6e592308a in _start ()
[Inferior 1 (process 21131) detached]

Reported using DrKonqi
Comment 1 Sam 2019-03-25 20:38:04 UTC 
The bug DOES NOT persist past reboot. 

Further notes:
* I switched NVIDIA driver from 415 to 418 prior to reboot.
Comment 2 Christoph Feck 2019-03-26 08:04:28 UTC 

*** This bug has been marked as a duplicate of bug 375913 ***