I got a fresh Arch installation so I doubt the issue is related to my system ...

To reproduce:
just start dolphin, it will crash

Logs? Backtrace? Anything useful at all?

Yeah sorry I didn't bothered with that because it is very easy to reproduce and I already downgraded to the previous version of dolphin

Here it is :)

This what happens when I start dolphin from terminal:

~ $ dolphin
kf5.kservice.sycoca: Parse error in "/home/fra/.config/menus/applications-merged/xdg-desktop-menu-dummy.menu" , line 1 , col 1 : "unexpected end of file"
kf5.kservice.services: The desktop entry file "/usr/share/applications/org.kde.systemmonitor.desktop" has Type= "Application" but no Exec line
kf5.kservice.sycoca: Invalid Service : "/usr/share/applications/org.kde.systemmonitor.desktop"
kf5.kservice.services: The desktop entry file "/usr/share/applications/org.kde.drkonqi.desktop" has Type= "Application" but no Exec line
kf5.kservice.sycoca: Invalid Service : "/usr/share/applications/org.kde.drkonqi.desktop"
qt.accessibility.core: Cannot create accessible child interface for object: PlacesView(0x557301574260) index: 13
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = dolphin path = /usr/bin pid = 30155
KCrash: Arguments: /usr/bin/dolphin
KCrash: Attempting to start /usr/lib/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0

[1]+ Stopped dolphin

I tried to delete "/home/fra/.config/menus/applications-merged/xdg-desktop-menu-dummy.menu" ( it was empty )
and re run dolphin and go this:

$ dolphin
qt.accessibility.core: Cannot create accessible child interface for object: PlacesView(0x7fd518002e50) index: 13
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = dolphin path = /usr/bin pid = 32408
KCrash: Arguments: /usr/bin/dolphin
KCrash: Attempting to start /usr/lib/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0

[1]+ Stopped dolphin

This is the backtrace:


Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f32d5751800 (LWP 24587))]

Thread 4 (Thread 0x7f32af62d700 (LWP 24590)):
#0 0x00007f32d4ff097b in poll () from /usr/lib/libc.so.6
#1 0x00007f32c79d8523 in ?? () from /usr/lib/libglib-2.0.so.0
#2 0x00007f32c79d863e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3 0x00007f32cf1eb264 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4 0x00007f32cf18d32b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5 0x00007f32cef9c72e in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6 0x00007f32cefa1acd in ?? () from /usr/lib/libQt5Core.so.5
#7 0x00007f32ca06908c in start_thread () from /usr/lib/libpthread.so.0
#8 0x00007f32d4ffae7f in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f32b795d700 (LWP 24589)):
#0 0x00007f32c7a1f2d9 in g_mutex_lock () from /usr/lib/libglib-2.0.so.0
#1 0x00007f32c79d7a55 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#2 0x00007f32c79d844e in ?? () from /usr/lib/libglib-2.0.so.0
#3 0x00007f32c79d863e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4 0x00007f32cf1eb264 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5 0x00007f32cf18d32b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6 0x00007f32cef9c72e in QThread::exec() () from /usr/lib/libQt5Core.so.5
#7 0x00007f32cf60e416 in ?? () from /usr/lib/libQt5DBus.so.5
#8 0x00007f32cefa1acd in ?? () from /usr/lib/libQt5Core.so.5
#9 0x00007f32ca06908c in start_thread () from /usr/lib/libpthread.so.0
#10 0x00007f32d4ffae7f in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f32bdf50700 (LWP 24588)):
#0 0x00007f32d4ff097b in poll () from /usr/lib/libc.so.6
#1 0x00007f32c7317180 in ?? () from /usr/lib/libxcb.so.1
#2 0x00007f32c7318e4b in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3 0x00007f32c0aea82a in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4 0x00007f32cefa1acd in ?? () from /usr/lib/libQt5Core.so.5
#5 0x00007f32ca06908c in start_thread () from /usr/lib/libpthread.so.0
#6 0x00007f32d4ffae7f in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f32d5751800 (LWP 24587)):
[KCrash Handler]
#6 0x0000006100740061 in ?? ()
#7 0x00007f32cf1c3a6a in QObjectPrivate::connectImpl(QObject const*, int, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () from /usr/lib/libQt5Core.so.5
#8 0x00007f32cf1c3c4c in QObject::connectImpl(QObject const*, void**, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () from /usr/lib/libQt5Core.so.5
#9 0x00007f32d5328583 in ?? () from /usr/lib/libkdeinit5_dolphin.so
#10 0x00007f32d5328792 in ?? () from /usr/lib/libkdeinit5_dolphin.so
#11 0x00007f32cf1bf73f in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#12 0x00007f32cf127e7f in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/libQt5Core.so.5
#13 0x00007f32cf12f6cd in QAbstractItemModel::endInsertRows() () from /usr/lib/libQt5Core.so.5
#14 0x00007f32d475827d in ?? () from /usr/lib/libKF5KIOFileWidgets.so.5
#15 0x00007f32d47588a0 in ?? () from /usr/lib/libKF5KIOFileWidgets.so.5
#16 0x00007f32d4759f89 in ?? () from /usr/lib/libKF5KIOFileWidgets.so.5
#17 0x00007f32cf1c0062 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#18 0x00007f32d0196fec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#19 0x00007f32d019e9c6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#20 0x00007f32cf18ecf0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#21 0x00007f32cf191956 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#22 0x00007f32cf1ebc54 in ?? () from /usr/lib/libQt5Core.so.5
#23 0x00007f32c79d8368 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0x00007f32c79d85b1 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0x00007f32c79d863e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0x00007f32cf1eb241 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#27 0x00007f32c0b72482 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#28 0x00007f32cf18d32b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#29 0x00007f32cf196728 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#30 0x00007f32d52fb9d6 in kdemain () from /usr/lib/libkdeinit5_dolphin.so
#31 0x00007f32d4f25f4a in __libc_start_main () from /usr/lib/libc.so.6
#32 0x00005558007ce77a in _start ()

Please attach your ~/.local/share/user-places.xbel (if there is nothing private in it)

Ping?

:)

This is caused by a duplicate "search:/documents" entry in user-places. As a workaround you can manually remove it for now.

https://bugs.kde.org/show_bug.cgi?id=393528

Alright it works, thanks