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dolphin 20.08.2 crashes upon right-click



Hello,
Dolphin 20.08.2 ALWAYS crashes when trying to reach the context menu by a right-click with the mouse somewhere inside Dolphin after my yesterday update of my Debian/testing "bullseye". The crash happens with the newest kernel, which became installed yesterday, but also with my previous one. I also did not observe any problems with the right-click in other KDE apps or the Plasma desktop. To me it appears a Dolphin malfunction. As there is no bug report about this severe malfunction in the KDE Bug Tracker by now, at least i didn't found one, I have to assume that it is only me having this problem?

Any advice on how to debug this?
(1) Could the crashes be linked to add-ons added to the context-menu of Dolphin? How could I for testing temporarily return to the default context menu functionality and general dolphin configuration, which config file(s) would I need to back up about my current setup for (hopefully soon) future use again?

(2) How to gather useful information for the KDE developers for supplying them in a bug report? Which log-files should I enable how?
The bug-report tool claims:
"The packages containing debug information for the following application and libraries are missing:
/usr/bin/kdeinit5
/usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
/lib/x86_64-linux-gnu/libQt5Core.so.5
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
/lib/x86_64-linux-gnu/libdolphinprivate.so.5
/lib/x86_64-linux-gnu/libQt5Gui.so.5
  "

However, this text appears as developer Information:
Application: Dolphin (kdeinit5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7275e01bc0 (LWP 3280))]

Thread 8 (Thread 0x7f725cd6e700 (LWP 3289)):
#0 0x00007f72796c035f in __GI___poll (fds=0x7f7240004a60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7277c19dde in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f7277c19eff in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f7279a8931b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f7279a324db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f72798598de in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f727985aa01 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #8 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f725dca3700 (LWP 3288)):
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x56084070bbc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56084070bb78, cond=0x56084070bba0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x56084070bba0, mutex=0x56084070bb78) at pthread_cond_wait.c:638 #3 0x00007f726aa3cc9b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f726aa3c777 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f725e4a4700 (LWP 3287)):
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x56084070bbc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56084070bb78, cond=0x56084070bba0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x56084070bba0, mutex=0x56084070bb78) at pthread_cond_wait.c:638 #3 0x00007f726aa3cc9b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f726aa3c777 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f725eca5700 (LWP 3286)):
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x56084070bbc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56084070bb78, cond=0x56084070bba0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x56084070bba0, mutex=0x56084070bb78) at pthread_cond_wait.c:638 #3 0x00007f726aa3cc9b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f726aa3c777 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f725f4a6700 (LWP 3285)):
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x56084070bbc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56084070bb78, cond=0x56084070bba0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x56084070bba0, mutex=0x56084070bb78) at pthread_cond_wait.c:638 #3 0x00007f726aa3cc9b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f726aa3c777 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7269039700 (LWP 3284)):
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x5608408af7bc) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5608408af768, cond=0x5608408af790) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5608408af790, mutex=0x5608408af768) at pthread_cond_wait.c:638 #3 0x00007f726aa3cc9b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #4 0x00007f726aa3c777 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #5 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f72716e6700 (LWP 3283)):
#0 0x00007f72796c035f in __GI___poll (fds=0x7f72640127b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7277c19dde in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f7277c19eff in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f7279a8931b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f7279a324db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f72798598de in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7275395a27 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f727985aa01 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f72786adea7 in start_thread (arg=<optimized out>) at pthread_create.c:477 #9 0x00007f72796cad4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7275e01bc0 (LWP 3280)):
[KCrash Handler]
#4  0x0000000000000000 in ?? ()
#5 0x00007f7273475f23 in VersionControlObserver::actions(KFileItemList const&) const () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #6 0x00007f727346738c in DolphinView::versionControlActions(KFileItemList const&) const () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #7 0x00007f7273523c0b in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so #8 0x00007f72735249c5 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so #9 0x00007f72735256bf in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so #10 0x00007f727351cc22 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#11 0x00007f7279a688c6 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f72733fdbd4 in DolphinView::requestContextMenu(QPoint const&, KFileItem const&, QUrl const&, QList<QAction*> const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #13 0x00007f7273464d0c in DolphinView::slotViewContextMenuRequested(QPointF const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#14 0x00007f7279a688c6 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f72733fc1b5 in KItemListController::viewContextMenuRequested(QPointF const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #16 0x00007f727342a5fc in KItemListController::mousePressEvent(QGraphicsSceneMouseEvent*, QTransform const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #17 0x00007f727342c809 in KItemListController::processEvent(QEvent*, QTransform const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #18 0x00007f727343c09d in KItemListView::event(QEvent*) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5 #19 0x00007f727882903f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #20 0x00007f7279a33b62 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #21 0x00007f7278b3be25 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #22 0x00007f7278b3c1c1 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #23 0x00007f7278b4478a in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #24 0x00007f7278b4e501 in QGraphicsScene::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #25 0x00007f727882903f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #26 0x00007f7279a33b62 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #27 0x00007f7278b6a845 in QGraphicsView::mousePressEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #28 0x00007f727886952e in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #29 0x00007f7278910d4e in QFrame::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #30 0x00007f7279a3387b in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #31 0x00007f727882902e in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #32 0x00007f727882e781 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #33 0x00007f7279a33b62 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #34 0x00007f727882d696 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #35 0x00007f727888195e in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #36 0x00007f72788847ae in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #37 0x00007f727882903f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5 #38 0x00007f7279a33b62 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #39 0x00007f7279dfd45b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5 #40 0x00007f7279dd3c0b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f7272d0cb6a in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f7277c19b9b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f7277c19e48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f7277c19eff in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #45 0x00007f7279a892ff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #46 0x00007f7279a324db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #47 0x00007f7279a3a782 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5 #48 0x00007f727350c255 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#49 0x000056083e7bdf6e in ?? ()
#50 0x000056083e7bf381 in ?? ()
#51 0x000056083e7bfb19 in ?? ()
#52 0x000056083e7bb60f in ?? ()
#53 0x00007f72795f3cca in __libc_start_main (main=0x56083e7bac70, argc=1, argv=0x7ffcb32d1428, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcb32d1418) at ../csu/libc-start.c:308
#54 0x000056083e7bc10a in ?? ()
[Inferior 1 (process 3280) detached]




I saw that my yesterday update installed the many new KDE parts which we have been waiting for so long (many versions *.74 arrived, substituting *.70 versions on my system, and I should mention that it was the first update I run after some 6 weeks due to not having had time to risk to break my before flawlessly running system. I could send the apt log file if you would need to see which packages became updated.


Appreciating your help!
Marco.


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