Other users also observed this and posted it

- in an unrelated crash report: https://bugs.kde.org/show_bug.cgi?id=432266#c2
- on Reddit: https://www.reddit.com/r/archlinux/comments/lbznwz/issues_with_kde_discover_crash_upon_start_with/

The Reddit user said that downgrading flatpak to 1.3.1 circumvented it. That’s quite an old version!



Application: Discover (plasma-discover), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f6354864b48 in g_slist_find () at /usr/lib/libglib-2.0.so.0
#5  0x00007f63541c373c in  () at /usr/lib/libgobject-2.0.so.0
#6  0x00007f63541a46fa in  () at /usr/lib/libgobject-2.0.so.0
#7  0x00007f63541aa0c4 in  () at /usr/lib/libgobject-2.0.so.0
#8  0x00007f63541ab8a4 in g_object_new_valist () at /usr/lib/libgobject-2.0.so.0
#9  0x00007f63541abc1a in g_object_new () at /usr/lib/libgobject-2.0.so.0
#10 0x00007f6334496dc1 in  () at /usr/lib/libflatpak.so.0
#11 0x00007f6334491df3 in  () at /usr/lib/libflatpak.so.0
#12 0x00007f6334492d09 in flatpak_installation_get_installed_ref () at /usr/lib/libflatpak.so.0
#13 0x00007f63346c5b0d in  () at /usr/lib/qt/plugins/discover/flatpak-backend.so
#14 0x00007f63346cba4d in  () at /usr/lib/qt/plugins/discover/flatpak-backend.so
#15 0x00007f63346cc3b7 in  () at /usr/lib/qt/plugins/discover/flatpak-backend.so
#16 0x00007f63346cc5e3 in  () at /usr/lib/qt/plugins/discover/flatpak-backend.so
#17 0x00007f63346cd562 in  () at /usr/lib/qt/plugins/discover/flatpak-backend.so
#18 0x00007f6356439dd6 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f6356225525 in QFutureWatcherBase::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#20 0x00007f63573c0752 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007f6356402a7a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#22 0x00007f6356405573 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#23 0x00007f635645c0a4 in  () at /usr/lib/libQt5Core.so.5
#24 0x00007f6354849a84 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#25 0x00007f635489d9b1 in  () at /usr/lib/libglib-2.0.so.0
#26 0x00007f63548482b1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#27 0x00007f635645b6e1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007f63564013fc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#29 0x00007f6356409894 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#30 0x00005604dfc258cc in  ()
#31 0x00007f6355dcd152 in __libc_start_main () at /usr/lib/libc.so.6
#32 0x00005604dfc25e6e in _start ()
[Inferior 1 (process 8459) detached]



SOFTWARE/OS VERSIONS
Linux: Arch
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2