Bug 374930

Summary:	Plasma crashes when hot-plug new displays
Product:	[Plasma] plasmashell	Reporter:	Dmitry <sub>
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	bshah, notmart, plasma-bugs-null
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.8.5
Target Milestone:	1.0
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Dmitry 2017-01-11 21:18:37 UTC

Application: plasmashell (5.8.5)

Qt Version: 5.6.1
Frameworks Version: 5.28.0
Operating System: Linux 4.8.0-34-generic x86_64
Distribution: Ubuntu 16.10

-- Information about the crash:
What I was doing when the application crashed:
When I disconnect extenal display on my macbooc pro, suspend, then wake up the system and connect two different external displays.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4461e33d40 (LWP 22237))]

Thread 8 (Thread 0x7f439690c700 (LWP 22253)):
#0  0x00007f4459442029 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f44593fbee5 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f44593fc8fb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f44593fcaec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f445cfec4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f445cf940fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f445cdb9d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4398e1b5c7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f445cdbec68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7f43a9e7e700 (LWP 22252)):
#0  0x00007f445c6be0bd in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f44593fc9d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f44593fcaec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f445cfec4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f445cf940fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f445cdb9d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4460044706 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f445cdbec68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7f43b0f96700 (LWP 22251)):
#0  0x00007f445bea44d0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f443ccb04d3 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f443ccafc17 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7f443e168700 (LWP 22250)):
#0  0x00007f445bea44d0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f4461891574 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f44618915b9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7f443fdc8700 (LWP 22249)):
#0  0x00007f44593fbee5 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f44593fc8fb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f44593fcaec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f445cfec4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f445cf940fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f445cdb9d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f445f6bdc65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f445cdbec68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f4445c0a700 (LWP 22248)):
#0  0x00007f445c6be0bd in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f44593fc9d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f44593fcaec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f445cfec4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f445cf940fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f445cdb9d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f445f6bdc65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f445cdbec68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f444f6cf700 (LWP 22246)):
#0  0x00007f445c6be0bd in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f44593fc9d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f44593fcaec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f445cfec4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f445cf940fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f445cdb9d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4461f70575 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f445cdbec68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f445be9e6ca in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f445c6ca0af in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f4461e33d40 (LWP 22237)):
[KCrash Handler]
#6  0x00007f44600c72a2 in QQuickItemPrivate::addToDirtyList() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f44600d4418 in QQuickItem::componentComplete() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f445f6b3ad9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f445f641de2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f445f6429e4 in QQmlIncubationController::incubateFor(int) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f44603377bc in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Declarative.so.5
#12 0x00007f445f6417ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f445f6422c8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f445f6429e4 in QQmlIncubationController::incubateFor(int) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f44603377bc in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Declarative.so.5
#16 0x00007f445f6427f2 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f445f63d988 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f44603340c5 in KDeclarative::QmlObject::completeInitialization(QHash<QString, QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libKF5Declarative.so.5
#19 0x00007f446033418c in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Declarative.so.5
#20 0x00007f4460334360 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Declarative.so.5
#21 0x00007f4460ff534b in KQuickAddons::QuickViewSharedEngine::setSource(QUrl const&) () from /usr/lib/x86_64-linux-gnu/libKF5QuickAddons.so.5
#22 0x000055f45ea7edbf in ?? ()
#23 0x000055f45ea93fb7 in ?? ()
#24 0x00007f445cfc3bec in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f445d2deeb2 in QGuiApplication::screenAdded(QScreen*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#26 0x00007f445d2d1e99 in QPlatformIntegration::screenAdded(QPlatformScreen*, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#27 0x00007f444eb04659 in QXcbConnection::createScreen(QXcbVirtualDesktop*, xcb_randr_output_change_t const&, xcb_randr_get_output_info_reply_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#28 0x00007f444eb05a2d in QXcbConnection::updateScreens(xcb_randr_notify_event_t const*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#29 0x00007f444eb0674b in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#30 0x00007f444eb06c0b in QXcbConnection::processXcbEvents() () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#31 0x00007f445cfc4699 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f445d8d18ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f445d8d6d4f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f445cf963b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f445cf9833c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f445cfec083 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f44593fc7d7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f44593fca40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f44593fcaec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f445cfec48f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f445cf940fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f445cf9c90c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x000055f45ea713a4 in ?? ()
#44 0x00007f445c5e23f1 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#45 0x000055f45ea7172a in _start ()

Reported using DrKonqi

Comment 1 Marco Martin 2017-01-17 10:36:55 UTC

the external displays were connected before or after resuming?

Comment 2 Marco Martin 2017-01-17 10:39:28 UTC

isthis reproducible?

Comment 3 Dmitry 2017-01-18 16:29:21 UTC

(In reply to Marco Martin from comment #1)
> the external displays were connected before or after resuming?

I connect them after resuming.

>is this reproducible?

I saw this multiple times, but not every time. Will try to describe steps to reproduce it.

Comment 4 David Edmundson 2018-07-11 21:35:22 UTC


*** This bug has been marked as a duplicate of bug 396359 ***