Bug 372271

Application: plasmashell (5.8.3)

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.8.5-2-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Boot the PC
- Unusual behavior I noticed:
Dual monitor (via VGA) crash Plasma. The second monitor (of Laptop) is black. I have different background for these monitor.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb9449e0800 (LWP 2124))]

Thread 8 (Thread 0x7fb87cdbc700 (LWP 2290)):
#0  0x00007fb93e0f448d in poll () at /usr/lib/libc.so.6
#1  0x00007fb9393bc786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb9393bc89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb93ea1672b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb93e9c023a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb93e7e30f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb87f2e80a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007fb93e7e7d78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fb88c1ad700 (LWP 2281)):
#0  0x00007fb9393bbc95 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb9393bc6ab in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb9393bc89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb93ea1672b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb93e9c023a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb93e7e30f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb9426e5856 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007fb93e7e7d78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fb916fac700 (LWP 2280)):
#0  0x00007fb93d8fd10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb944175ac4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fb944175b09 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fb924d60700 (LWP 2279)):
#0  0x00007fb93ea15e73 in  () at /usr/lib/libQt5Core.so.5
#1  0x00007fb9393bbc89 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb9393bc6ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb9393bc89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb93ea1672b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb93e9c023a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb93e7e30f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fb941b462d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007fb93e7e7d78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fb9267c0700 (LWP 2218)):
#0  0x00007fb93e7def22 in QMutex::lock() () at /usr/lib/libQt5Core.so.5
#1  0x00007fb93ea16009 in  () at /usr/lib/libQt5Core.so.5
#2  0x00007fb9393bc179 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb9393bc724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb9393bc89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fb93ea1672b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb93e9c023a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fb93e7e30f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fb941b462d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fb93e7e7d78 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fb927fff700 (LWP 2175)):
#0  0x00007fb93e7def20 in QMutex::lock() () at /usr/lib/libQt5Core.so.5
#1  0x00007fb93ea15e9f in  () at /usr/lib/libQt5Core.so.5
#2  0x00007fb9393bbc89 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb9393bc6ab in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb9393bc89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fb93ea1672b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb93e9c023a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fb93e7e30f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fb93f563e55 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fb93e7e7d78 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fb92e02c700 (LWP 2144)):
#0  0x00007fb93e0f448d in poll () at /usr/lib/libc.so.6
#1  0x00007fb9430b58e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fb9430b7679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fb92fd69449 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fb93e7e7d78 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fb93d8f7454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fb93e0fd7df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fb9449e0800 (LWP 2124)):
[KCrash Handler]
#6  0x00007fb9427665c4 in QQuickItem::isEnabled() const () at /usr/lib/libQt5Quick.so.5
#7  0x00007fb94278335c in QQuickWindowPrivate::setFocusInScope(QQuickItem*, QQuickItem*, Qt::FocusReason, QFlags<QQuickWindowPrivate::FocusOption>) () at /usr/lib/libQt5Quick.so.5
#8  0x00007fb9427683c8 in QQuickItem::setFocus(bool, Qt::FocusReason) () at /usr/lib/libQt5Quick.so.5
#9  0x00007fb94277bad0 in QQuickWindow::focusInEvent(QFocusEvent*) () at /usr/lib/libQt5Quick.so.5
#10 0x00007fb93ef1bfe3 in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#11 0x00007fb942789883 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#12 0x000000000042ce8d in  ()
#13 0x00007fb93f92ce0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#14 0x00007fb93f934581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#15 0x00007fb93e9c1de0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#16 0x00007fb93ef11be9 in QGuiApplicationPrivate::processActivatedEvent(QWindowSystemInterfacePrivate::ActivatedWindowEvent*) () at /usr/lib/libQt5Gui.so.5
#17 0x00007fb93ef11f6d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#18 0x00007fb93eeefcab in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#19 0x00007fb92fd9f2f0 in  () at /usr/lib/libQt5XcbQpa.so.5
#20 0x00007fb9393bc587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#21 0x00007fb9393bc7f0 in  () at /usr/lib/libglib-2.0.so.0
#22 0x00007fb9393bc89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#23 0x00007fb93ea1670f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#24 0x00007fb93e9c023a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#25 0x00007fb93e9c873c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#26 0x000000000041c8b2 in  ()
#27 0x00007fb93e035291 in __libc_start_main () at /usr/lib/libc.so.6
#28 0x000000000041cc3a in _start ()

Possible duplicates by query: bug 371936, bug 371789, bug 371743, bug 370916, bug 369142.

Reported using DrKonqi