Bug 417214

Application: plasma-discover (5.12.8)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.3.0-28-generic x86_64
Distribution: Ubuntu 18.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:

I was prompted to check the NVIDIA driver. Out of 4 drivers I selected the (recommended), and when I click Accept, it reverts the same window and always default to the Xorg.... driver which is not the recommended driver. After few identical attempts where I selected the (recommended) driver, I clicked OK (Instead of Accept) and then I was notified of 1 package to update, and when I clicked Update, it told me it crashed.

I just installed KDE. I installed it because before I was using GNOME and my computer programs (C++ and Python) all using GPU start to freeze entirely the desktop. So, after many attempts, I tried to change the Desktop environment. After installing KDE, this is the first operation I did after browsing some of my directories using the GUI. Nothing else.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f91b80df800 (LWP 19251))]

Thread 10 (Thread 0x7f916b3e8700 (LWP 19262)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x7f915800da70, nfds=5, timeout=29749) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91b3ffa99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91b3dbe23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f91affd16db in start_thread (arg=0x7f916b3e8700) at pthread_create.c:463
#8  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f917973e700 (LWP 19259)):
#0  0x00007f91adee9649 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f91adea2b33 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea34fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f91b3ffa99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f91b3dbe23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f91affd16db in start_thread (arg=0x7f917973e700) at pthread_create.c:463
#9  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f917b5f1700 (LWP 19258)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x7f916c003600, nfds=1, timeout=9844) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91b3ffa97f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91b3dbe23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f91affd16db in start_thread (arg=0x7f917b5f1700) at pthread_create.c:463
#8  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f917bfff700 (LWP 19257)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x562b8f8dbe10, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea3962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f918207b0e6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f91adecb195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f91affd16db in start_thread (arg=0x7f917bfff700) at pthread_create.c:463
#6  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f9180a54700 (LWP 19256)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x562b8f8c9250, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91adea3721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f91adecb195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f91affd16db in start_thread (arg=0x7f9180a54700) at pthread_create.c:463
#6  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f918bfff700 (LWP 19255)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x7f9184004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91b3ffa99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91b3dbe23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f91b719e2a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f91affd16db in start_thread (arg=0x7f918bfff700) at pthread_create.c:463
#9  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f919af32700 (LWP 19254)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x7f918c004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91b3ffa99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91b3dbe23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f91b49d46f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f91affd16db in start_thread (arg=0x7f919af32700) at pthread_create.c:463
#9  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f919c143700 (LWP 19253)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x7f9194019050, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adea35c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f91b3ffa99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91b3dbe23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f91b51afd45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f91affd16db in start_thread (arg=0x7f919c143700) at pthread_create.c:463
#9  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f91a54e0700 (LWP 19252)):
#0  0x00007f91b36b1bf9 in __GI___poll (fds=0x7f91a54dfca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f91adc3a747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f91adc3c36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f91a828d5e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f91b3dc317d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f91affd16db in start_thread (arg=0x7f91a54e0700) at pthread_create.c:463
#6  0x00007f91b36be88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f91b80df800 (LWP 19251)):
[KCrash Handler]
#6  0x00007f91b35dbe97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f91b35dd801 in __GI_abort () at abort.c:79
#8  0x00007f91b3dadfb7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f91b72012a7 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f91b7202275 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f91b7202e9a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f91b5ac53d5 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f91b72776c5 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f91b627583c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f91b627d104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f91b3fa19c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f91b5aba49f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f91b5abb0dd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f91b5a922eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f91a82f2260 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f91adea3417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f91adea3650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f91adea36dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f91b3ffa97f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f91b3f9f9fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f91b3fa8aa4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x0000562b8d283148 in  ()
#28 0x00007f91b35beb97 in __libc_start_main (main=0x562b8d282870, argc=3, argv=0x7ffc6a034ad8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc6a034ac8) at ../csu/libc-start.c:310
#29 0x0000562b8d2833ca in _start ()

Reported using DrKonqi