Bug 423152

Application: plasmashell (5.19.1)

Qt Version: 5.14.2
Frameworks Version: 5.71.0
Operating System: Linux 5.3.0-59-generic x86_64
Windowing system: X11
Distribution: KDE neon User Edition 5.19

-- Information about the crash:
- What I was doing when the application crashed:
I recently installed KDE neon, this was the first time I booted after installing the nvidia-340 driver. After boot, the screen was black with a mouse pointer but no login screen. I switched to TTY2, logged in and ran "startx", which after a while (~20 seconds) showed the desktop. However, the desktop loaded very slowly, with first a dialog box for my Wifi password, then the owncloud client (don't know why, it had no errors), and only after that, the task bar and desktop wallpaper showed up.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[KCrash Handler]
#4  QOpenGLContext::isValid (this=0x0) at kernel/qopenglcontext.cpp:715
#5  0x00007f9d3be250b6 in QSGGuiThreadRenderLoop::renderWindow (this=this@entry=0x560bb8e302f0, window=<optimized out>) at scenegraph/qsgrenderloop.cpp:623
#6  0x00007f9d3be26e04 in QSGGuiThreadRenderLoop::exposureChanged (this=0x560bb8e302f0, window=<optimized out>) at scenegraph/qsgrenderloop.cpp:816
#7  0x00007f9d3853dc05 in QWindow::event (this=this@entry=0x560bb8e0b1f0, ev=ev@entry=0x7fffb9607df0) at kernel/qwindow.cpp:2363
#8  0x00007f9d3bead975 in QQuickWindow::event (this=0x560bb8e0b1f0, e=0x7fffb9607df0) at items/qquickwindow.cpp:1773
#9  0x00007f9d392799ac in QApplicationPrivate::notify_helper (this=this@entry=0x560bb8c256c0, receiver=receiver@entry=0x560bb8e0b1f0, e=e@entry=0x7fffb9607df0) at kernel/qapplication.cpp:3685
#10 0x00007f9d39280bb0 in QApplication::notify (this=0x7fffb9608230, receiver=0x560bb8e0b1f0, e=0x7fffb9607df0) at kernel/qapplication.cpp:3431
#11 0x00007f9d37f354a8 in QCoreApplication::notifyInternal2 (receiver=0x560bb8e0b1f0, event=0x7fffb9607df0) at kernel/qcoreapplication.cpp:1075
#12 0x00007f9d37f3568e in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x560bb8e0b1f0, event=event@entry=0x7fffb9607df0) at kernel/qcoreapplication.cpp:1482
#13 0x00007f9d38533817 in QGuiApplicationPrivate::processExposeEvent (e=0x560bb9370010) at kernel/qguiapplication.cpp:3182
#14 0x00007f9d38533a7d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x560bb9370010) at kernel/qguiapplication.cpp:2003
#15 0x00007f9d3850c1cb in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1170
#16 0x00007f9d286fff9a in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#17 0x00007f9d30e8f417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f9d30e8f650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f9d30e8f6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f9d37f947ac in QEventDispatcherGlib::processEvents (this=0x560bb8c9fe70, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#21 0x00007f9d37f33d2a in QEventLoop::exec (this=this@entry=0x7fffb96080d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#22 0x00007f9d37f3d4a0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1383
#23 0x0000560bb82a20df in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:224

Possible duplicates by query: bug 408631, bug 401442, bug 398716, bug 398031, bug 396610.

Reported using DrKonqi