Bug 415971 - Falkon crashed
Summary: Falkon crashed
Status: REPORTED
Alias: None
Product: Falkon
Classification: Applications
Component: general (show other bugs)
Version: 3.1.0
Platform: Compiled Sources Linux
: NOR crash
Target Milestone: ---
Assignee: David Rosca
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2020-01-07 17:45 UTC by Götz Wilhelm Renger
Modified: 2021-01-02 02:04 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
application style (example) (86.14 KB, image/png)
2020-01-19 18:10 UTC, Graham Perrin
Details
window decorations (example) (94.63 KB, image/png)
2020-01-19 18:11 UTC, Graham Perrin
Details

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Description Götz Wilhelm Renger 2020-01-07 17:45:38 UTC
Application: falkon (3.1.0)
 (Compiled from sources)
Qt Version: 5.13.2
Frameworks Version: 5.64.0
Operating System: Linux 4.19.86-gentoo-alpha x86_64
Distribution: Gentoo/Linux

-- Information about the crash:
USE="debug" emerge -vt --ask '=www-client/falkon-3.1.0-r1'

The crash can be reproduced every time.

-- Backtrace:
Application: Falkon (falkon), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1900e05a00 (LWP 12190))]

Thread 20 (Thread 0x7f18cd0c9700 (LWP 12226)):
#0  0x00007f19071331dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab632e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63ea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79b0f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f18cd8ca700 (LWP 12214)):
#0  0x00007f1907132e77 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab631ec in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d30 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63e5f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79638 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a2b4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f18ce7fc700 (LWP 12213)):
#0  0x00007f19106a9a53 in poll () at /lib64/libc.so.6
#1  0x00007f19068d871e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f19068d883f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f1910c9f223 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1910c4a73b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1910ab0e21 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1910ab1eb2 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f18ceffd700 (LWP 12212)):
#0  0x00007f19106a9a53 in poll () at /lib64/libc.so.6
#1  0x00007f18febf13e2 in  () at /usr/lib64/libpulse.so.0
#2  0x00007f18febe2e39 in pa_mainloop_poll () at /usr/lib64/libpulse.so.0
#3  0x00007f18febe34bf in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#4  0x00007f18febe3570 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#5  0x00007f18febf1329 in  () at /usr/lib64/libpulse.so.0
#6  0x00007f18feafcfd8 in  () at /usr/lib64/pulseaudio/libpulsecommon-13.0.so
#7  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f18cf7fe700 (LWP 12211)):
#0  0x00007f19071331dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab632e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63ea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79b0f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f18cffff700 (LWP 12210)):
#0  0x00007f1907132e77 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab631ec in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d30 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63e5f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190aae514e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab02967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab354cf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f18dcff9700 (LWP 12209)):
#0  0x00007f1907132e77 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab631ec in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190b688528 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab352cd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f18dd7fa700 (LWP 12208)):
#0  0x00007f19106b5b72 in epoll_wait () at /lib64/libc.so.6
#1  0x00007f19060d83e9 in  () at /usr/lib64/libevent-2.1.so.6
#2  0x00007f19060ce459 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f190ab69a7a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab02967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190a05c314 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab35648 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f18ddffb700 (LWP 12207)):
#0  0x00007f19071331dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab632e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63ea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f18de7fc700 (LWP 12206)):
#0  0x00007f19071331dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab632e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63ea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f18deffd700 (LWP 12205)):
#0  0x00007f19106ac58f in select () at /lib64/libc.so.6
#1  0x00007f190aad44f4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f18df7fe700 (LWP 12204)):
#0  0x00007f19106b5b72 in epoll_wait () at /lib64/libc.so.6
#1  0x00007f19060d83e9 in  () at /usr/lib64/libevent-2.1.so.6
#2  0x00007f19060ce459 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f190ab6999a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab02967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab354cf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f18dffff700 (LWP 12203)):
#0  0x00007f191067f6fa in waitpid () at /lib64/libc.so.6
#1  0x00007f190ab622d6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab626a6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab60b60 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f18f4c57700 (LWP 12196)):
#0  0x00007f19106a9a53 in poll () at /lib64/libc.so.6
#1  0x00007f190a429db2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab352cd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#5  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f18f5dec700 (LWP 12195)):
#0  0x00007f19071331dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab632e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63ea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f18f65ed700 (LWP 12194)):
#0  0x00007f19071331dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f190ab632e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f190ab63d23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f190ab63ea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab79622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab79d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab7a234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f18f6dee700 (LWP 12193)):
#0  0x00007f19106b5b72 in epoll_wait () at /lib64/libc.so.6
#1  0x00007f19060d83e9 in  () at /usr/lib64/libevent-2.1.so.6
#2  0x00007f19060ce459 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f190ab69a7a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f190ab02967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f190ab7ec14 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f190ab35648 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f190ab65d1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f18f7fff700 (LWP 12192)):
#0  0x00007f19106a9a53 in poll () at /lib64/libc.so.6
#1  0x00007f19068d871e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f19068d883f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f1910c9f223 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1910c4a73b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1910ab0e21 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f19101204e6 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f1910ab1eb2 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f19005e3700 (LWP 12191)):
#0  0x00007f19106a9a53 in poll () at /lib64/libc.so.6
#1  0x00007f19101b9cf2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f19101bb8ea in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f1900729550 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f1910ab1eb2 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f190712c3a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f19106b571f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f1900e05a00 (LWP 12190)):
[KCrash Handler]
#6  0x00007f19105e9a01 in raise () at /lib64/libc.so.6
#7  0x00007f19105d3535 in abort () at /lib64/libc.so.6
#8  0x00005558732e8fa0 in  ()
#9  0x00007f1910aaa388 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f1910aaa4a9 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007f1910a7ca72 in QMessageLogger::fatal(char const*, ...) const () at /usr/lib64/libQt5Core.so.5
#12 0x00007f191049cd22 in  () at /usr/lib64/libQt5QuickWidgets.so.5
#13 0x00007f191049d07a in  () at /usr/lib64/libQt5QuickWidgets.so.5
#14 0x00007f191049f1d6 in QQuickWidget::resizeEvent(QResizeEvent*) () at /usr/lib64/libQt5QuickWidgets.so.5
#15 0x00007f191059e3d9 in  () at /usr/lib64/libQt5WebEngineWidgets.so.5
#16 0x00007f19110a886e in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f191049fe73 in QQuickWidget::event(QEvent*) () at /usr/lib64/libQt5QuickWidgets.so.5
#18 0x00007f191059e6e2 in  () at /usr/lib64/libQt5WebEngineWidgets.so.5
#19 0x00007f1911065c72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007f191106f228 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007f1910c4b8af in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f19110a0c46 in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007f19110a4983 in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007f19110a7b43 in QWidgetPrivate::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007f190867301b in QtWebEngineCore::WebContentsAdapter::initialize(content::SiteInstance*) () at /usr/lib64/libQt5WebEngineCore.so.5
#26 0x00007f1910c74e6b in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f1910c81047 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f1910c75ab5 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#29 0x00007f1911065c72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007f191106f228 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#31 0x00007f1910c4b8af in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#32 0x00007f1910c9e553 in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#33 0x00007f1910c9edd9 in  () at /usr/lib64/libQt5Core.so.5
#34 0x00007f19068d8524 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#35 0x00007f19068d87a8 in  () at /usr/lib64/libglib-2.0.so.0
#36 0x00007f19068d883f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#37 0x00007f1910c9f223 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007f1910c4a73b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#39 0x00007f1910c523d2 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#40 0x00005558732e8905 in  ()
#41 0x00007f19105d4eab in __libc_start_main () at /lib64/libc.so.6
#42 0x00005558732e8c3a in _start ()
[Inferior 1 (process 12190) detached]

The reporter indicates this bug may be a duplicate of or related to bug 411068.

Possible duplicates by query: bug 415960, bug 415956, bug 415930, bug 415680, bug 415513.

Reported using DrKonqi
Comment 1 Graham Perrin 2020-01-19 12:21:13 UTC
Please, is this bug still reproducible? 

If so: what are your system settings for application style and for window decorations?
Comment 2 Götz Wilhelm Renger 2020-01-19 16:09:10 UTC
(In reply to Graham Perrin from comment #1)
> Please, is this bug still reproducible? 
> 
> If so: what are your system settings for application style and for window
> decorations?

Hi Graham.
Here is Götz Wilhelm Renger from Berlin.

How can I show you my 'system settings for application style and for window
decorations'? 

I've changed my /etc/portage/make.conf to 
COMMON_FLAGS="-march=core2 -Og -ggdb"

With this, is it possible to produce a better failure log. If so, what I've to do to deliver a better failure log then the following:

- - - - - - - snip - - - - - - - 

goetz@sky2:~$ falkon 
WebEngineContext used before QtWebEngine::initialize() or OpenGL context creation failed.
QGLXContext: Failed to create dummy context
Use of deprecated not thread-safe setter, use setUrlRequestInterceptor instead.
Cannot initialize model with data QJsonObject() . missing: QJsonValue(string, "urls")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/ftp.so" supports protocols ("ftp")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/help.so" supports protocols ("help")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/remote.so" supports protocols ("remote")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/kdeconnect.so" supports protocols ("kdeconnect")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/ghelp.so" supports protocols ("ghelp")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/file.so" supports protocols ("file")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/trash.so" supports protocols ("trash")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/audiocd.so" supports protocols ("audiocd")
kf5.kio.core: "/usr/lib64/qt5/plugins/kf5/kio/http.so" supports protocols ("http", "https", "webdav", "webdavs")
Please register the custom scheme 'desktop' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'sftp' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'ar' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'trash' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'man' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'gzip' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'pnm' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'recentdocuments' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'fish' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'webdav' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'mmst' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'mmsu' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'network' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'baloosearch' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'ghelp' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'zip' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'camera' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'bluetooth' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'videodvd' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'webdavs' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'thumbnail' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'rtspt' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'rtspu' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'tar' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'filenamesearch' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'programs' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'bzip2' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'obexftp' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'fonts' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'mms' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'rtsp' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'audiocd' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'remote' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'bookmarks' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'timeline' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'xz' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'knavalbattle' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'settings' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'info' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'kdeconnect' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'bzip' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'help' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'lzma' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'activities' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'tags' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'metainfo' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Please register the custom scheme 'applications' via QWebEngineUrlScheme::registerScheme() before installing the custom scheme handler.
Falkon: 2 extensions loaded
Fatal: Failed to create OpenGL context for format QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples 0, swapBehavior QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile) 
KCrash: Application 'falkon' crashing...
KCrash: Attempting to start /usr/lib64/libexec/drkonqi from kdeinit
sock_file=/run/user/1005/kdeinit5__0

[1]+  Angehalten              falkon
goetz@sky2:~$ 


- - - - - - - snap - - - - - - - 

Application: Falkon (falkon), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0e6f9e5ec0 (LWP 156270))]

Thread 22 (Thread 0x7f0e06ffd700 (LWP 156297)):
#0  0x00007f0e75aebe77 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c1ec in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd30 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951ce5f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532638 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e795332b4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f0e077fe700 (LWP 156296)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c2e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951cea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532b0f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e79533234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f0e07fff700 (LWP 156295)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7f4704d5 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f0e7f4705f7 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f0e7f46e3db in  () at /usr/lib64/libQt5Core.so.5
#4  0x00007f0e7f46aeb2 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f0e40ff9700 (LWP 156294)):
#0  0x00007f0e7f068d69 in syscall () at /lib64/libc.so.6
#1  0x00007f0e7f46d0c8 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007f0e7f62dc6a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f0e760de47c in  () at /usr/lib64/libQt5Network.so.5
#4  0x00007f0e7618b824 in  () at /usr/lib64/libQt5Network.so.5
#5  0x00007f0e7f62dd3d in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f0e760d47a1 in  () at /usr/lib64/libQt5Network.so.5
#7  0x00007f0e760d506b in  () at /usr/lib64/libQt5Network.so.5
#8  0x00007f0e7f62dd3d in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f0e76184c6f in  () at /usr/lib64/libQt5Network.so.5
#10 0x00007f0e7617983f in  () at /usr/lib64/libQt5Network.so.5
#11 0x00007f0e76179d96 in  () at /usr/lib64/libQt5Network.so.5
#12 0x00007f0e76159f33 in  () at /usr/lib64/libQt5Network.so.5
#13 0x00007f0e7f62dd3d in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#14 0x00007f0e7611e584 in  () at /usr/lib64/libQt5Network.so.5
#15 0x00007f0e7611e61b in  () at /usr/lib64/libQt5Network.so.5
#16 0x00007f0e76130641 in  () at /usr/lib64/libQt5Network.so.5
#17 0x00007f0e7fa1ec72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#18 0x00007f0e7fa28228 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#19 0x00007f0e7f6048af in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f0e7f658b8f in  () at /usr/lib64/libQt5Core.so.5
#21 0x00007f0e75291524 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#22 0x00007f0e752917a8 in  () at /usr/lib64/libglib-2.0.so.0
#23 0x00007f0e7529183f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#24 0x00007f0e7f65823b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f0e7f60373b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f0e7f469e21 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#27 0x00007f0e7f46aeb2 in  () at /usr/lib64/libQt5Core.so.5
#28 0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#29 0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f0e417fa700 (LWP 156293)):
#0  0x00007f0e7f062a53 in poll () at /lib64/libc.so.6
#1  0x00007f0e7529171e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f0e7529183f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f0e7f658223 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f0e7f60373b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f0e7f469e21 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f0e7f46aeb2 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f0e41ffb700 (LWP 156292)):
#0  0x00007f0e7f062a53 in poll () at /lib64/libc.so.6
#1  0x00007f0e6d7d13e2 in  () at /usr/lib64/libpulse.so.0
#2  0x00007f0e6d7c2e39 in pa_mainloop_poll () at /usr/lib64/libpulse.so.0
#3  0x00007f0e6d7c34bf in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#4  0x00007f0e6d7c3570 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#5  0x00007f0e6d7d1329 in  () at /usr/lib64/libpulse.so.0
#6  0x00007f0e6d6dcfd8 in  () at /usr/lib64/pulseaudio/libpulsecommon-13.0.so
#7  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f0e427fc700 (LWP 156291)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c2e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951cea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532b0f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e79533234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f0e42ffd700 (LWP 156290)):
#0  0x00007f0e75aebe77 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c1ec in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd30 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951ce5f in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e7949e14e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e794bb967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e794ee4cf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f0e437fe700 (LWP 156289)):
#0  0x00007f0e75aebe77 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c1ec in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7a041528 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e794ee2cd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f0e43fff700 (LWP 156288)):
#0  0x00007f0e7f06eb72 in epoll_wait () at /lib64/libc.so.6
#1  0x00007f0e74a913e9 in  () at /usr/lib64/libevent-2.1.so.6
#2  0x00007f0e74a87459 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f0e79522a7a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e794bb967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e78a15314 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e794ee648 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f0e54f15700 (LWP 156287)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c2e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951cea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e79533234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f0e55716700 (LWP 156286)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c2e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951cea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e79533234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f0e55f17700 (LWP 156285)):
#0  0x00007f0e7f06558f in select () at /lib64/libc.so.6
#1  0x00007f0e7948d4f4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f0e56718700 (LWP 156284)):
#0  0x00007f0e7f06eb72 in epoll_wait () at /lib64/libc.so.6
#1  0x00007f0e74a913e9 in  () at /usr/lib64/libevent-2.1.so.6
#2  0x00007f0e74a87459 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f0e7952299a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e794bb967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e794ee4cf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f0e56f19700 (LWP 156283)):
#0  0x00007f0e7f0386fa in waitpid () at /lib64/libc.so.6
#1  0x00007f0e7951b2d6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951b6a6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e79519b60 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f0e5771a700 (LWP 156276)):
#0  0x00007f0e7f062a53 in poll () at /lib64/libc.so.6
#1  0x00007f0e78de2db2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e794ee2cd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#5  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f0e6487c700 (LWP 156275)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c2e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951cea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e79533234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f0e6507d700 (LWP 156274)):
#0  0x00007f0e75aec1dc in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f0e7951c2e6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f0e7951cd23 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f0e7951cea1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e79532622 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79532d78 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e79533234 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f0e6587e700 (LWP 156273)):
#0  0x00007f0e7f06eb72 in epoll_wait () at /lib64/libc.so.6
#1  0x00007f0e74a913e9 in  () at /usr/lib64/libevent-2.1.so.6
#2  0x00007f0e74a87459 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f0e79522a7a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f0e794bb967 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f0e79537c14 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f0e794ee648 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f0e7951ed1a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f0e6cf27700 (LWP 156272)):
#0  0x00007f0e7f062a53 in poll () at /lib64/libc.so.6
#1  0x00007f0e7529171e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f0e7529183f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f0e7f658223 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f0e7f60373b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f0e7f469e21 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f0e7ead94e6 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f0e7f46aeb2 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f0e6f1c3700 (LWP 156271)):
#0  0x00007f0e7f062a53 in poll () at /lib64/libc.so.6
#1  0x00007f0e7eb72cf2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f0e7eb748ea in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f0e6f309550 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f0e7f46aeb2 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f0e75ae53a7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f0e7f06e71f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f0e6f9e5ec0 (LWP 156270)):
[KCrash Handler]
#6  0x00007f0e7efa2a01 in raise () at /lib64/libc.so.6
#7  0x00007f0e7ef8c535 in abort () at /lib64/libc.so.6
#8  0x000055595b0da9ef in msgHandler(QtMsgType, QMessageLogContext const&, QString const&) (type=QtFatalMsg, context=..., msg=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:116
#9  0x00007f0e7f463388 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f0e7f4634a9 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007f0e7f435a72 in QMessageLogger::fatal(char const*, ...) const () at /usr/lib64/libQt5Core.so.5
#12 0x00007f0e7ee55d22 in  () at /usr/lib64/libQt5QuickWidgets.so.5
#13 0x00007f0e7ee5607a in  () at /usr/lib64/libQt5QuickWidgets.so.5
#14 0x00007f0e7ee581d6 in QQuickWidget::resizeEvent(QResizeEvent*) () at /usr/lib64/libQt5QuickWidgets.so.5
#15 0x00007f0e7ef573d9 in  () at /usr/lib64/libQt5WebEngineWidgets.so.5
#16 0x00007f0e7fa6186e in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f0e7ee58e73 in QQuickWidget::event(QEvent*) () at /usr/lib64/libQt5QuickWidgets.so.5
#18 0x00007f0e7ef576e2 in  () at /usr/lib64/libQt5WebEngineWidgets.so.5
#19 0x00007f0e7fa1ec72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007f0e7fa28228 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007f0e7f6048af in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f0e7fa59c46 in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007f0e7fa5d983 in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007f0e7fa60b43 in QWidgetPrivate::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007f0e7702c01b in QtWebEngineCore::WebContentsAdapter::initialize(content::SiteInstance*) () at /usr/lib64/libQt5WebEngineCore.so.5
#26 0x00007f0e7702de8a in QtWebEngineCore::WebContentsAdapter::load(QWebEngineHttpRequest const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#27 0x00007f0e802624d9 in WebView::loadRequest(LoadRequest const&) (this=this@entry=0x55595d2068f0, req=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/webengine/webview.cpp:1267
#28 0x00007f0e8026267f in WebView::load(LoadRequest const&) (this=0x55595d2068f0, request=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/webengine/webview.cpp:211
#29 0x00007f0e8021ae81 in TabWidget::addView(LoadRequest const&, QString const&, QFlags<Qz::NewTabPositionFlag> const&, bool, int, bool) (this=this@entry=0x55595d215180, req=..., title=..., openFlags=..., selectLine=selectLine@entry=false, position=<optimized out>, position@entry=-1, pinned=false) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/tabwidget/tabwidget.cpp:378
#30 0x00007f0e8021af56 in TabWidget::addView(LoadRequest const&, QFlags<Qz::NewTabPositionFlag> const&, bool, bool) (this=this@entry=0x55595d215180, req=..., openFlags=..., selectLine=selectLine@entry=false, pinned=pinned@entry=false) at /usr/include/qt5/QtCore/qarraydata.h:257
#31 0x00007f0e800895b3 in BrowserWindow::postLaunch() (this=0x55595d23cf90) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/app/browserwindow.cpp:284
#32 0x00007f0e80090f21 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (BrowserWindow::*)()>::call(void (BrowserWindow::*)(), BrowserWindow*, void**) (arg=<optimized out>, o=<optimized out>, f=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:184
#33 0x00007f0e80090f21 in QtPrivate::FunctionPointer<void (BrowserWindow::*)()>::call<QtPrivate::List<>, void>(void (BrowserWindow::*)(), BrowserWindow*, void**) (arg=<optimized out>, o=<optimized out>, f=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:185
#34 0x00007f0e80090f21 in QtPrivate::QSlotObject<void (BrowserWindow::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:414
#35 0x00007f0e7f63a0e2 in  () at /usr/lib64/libQt5Core.so.5
#36 0x00007f0e7f62eab5 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f0e7fa1ec72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#38 0x00007f0e7fa28228 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#39 0x00007f0e7f6048af in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#40 0x00007f0e7f657553 in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#41 0x00007f0e7f657da1 in  () at /usr/lib64/libQt5Core.so.5
#42 0x00007f0e75291524 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#43 0x00007f0e752917a8 in  () at /usr/lib64/libglib-2.0.so.0
#44 0x00007f0e7529183f in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#45 0x00007f0e7f658223 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#46 0x00007f0e7f60373b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#47 0x00007f0e7f60b3d2 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#48 0x000055595b0dbcfa in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:155
[Inferior 1 (process 156270) detached]
Comment 3 Graham Perrin 2020-01-19 18:10:48 UTC
Created attachment 125246 [details]
application style (example)

(In reply to Götz Wilhelm Renger from comment #2)

> … How can I show you my 'system settings for application style and for 
> window decorations'? …

Example attached (screenshot)
Comment 4 Graham Perrin 2020-01-19 18:11:28 UTC
Created attachment 125247 [details]
window decorations (example)
Comment 5 Götz Wilhelm Renger 2020-01-19 19:20:43 UTC
(In reply to Graham Perrin from comment #3)
> Created attachment 125246 [details]
> application style (example)
> 
> (In reply to Götz Wilhelm Renger from comment #2)
> 
> > … How can I show you my 'system settings for application style and for 
> > window decorations'? …
> 
> Example attached (screenshot)

Thank you very much. The Answer of your question is: 
My kde application style is 'Breeze'. My kde window style is also 'Breeze'.
Comment 6 Michael Mounteney 2021-01-02 01:23:04 UTC
Falkon was pretty flakey at the start of 2020 but I haven't actually had it _crash_ in the last few months.  Although Falkon itself has not been updated, its libraries have.  I suggest Götz tries again now.

My "About Falkon" dialog:

Application version 3.1.0
QtWebEngine version 5.15.2
© 2010-2018 David Rosca
https://falkon.org
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Falkon/3.1.0 Chrome/83.0.4103.122 Safari/537.36
Comment 7 Graham Perrin 2021-01-02 02:04:37 UTC
Are drivers for graphics hardware et cetera up-to-date?

(In reply to Michael Mounteney from comment #6)

> Application version 3.1.0
> QtWebEngine version 5.15.2

The same here. 

I very rarely make intensive use of Falkon – my primary browser is Firefox – but it's probably fair for me to describe Falkon as _never_ crashing on FreeBSD-CURRENT. YMMV.