[kde] [Bug 350692] New: Plasma crashed during switching between a laptop display and an external monitor

Pavel Hering pavhering at gmail.com
Tue Jul 28 07:47:57 BST 2015 

https://bugs.kde.org/show_bug.cgi?id=350692

            Bug ID: 350692
           Summary: Plasma crashed during switching between a laptop
                    display and an external monitor
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: pavhering at gmail.com

Application: kwin_x11 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-25-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
I was switching between the display of my docked laptop and the external
monitor connected to the docking station. I wanted to disable the laptop
display and set the external monitor as primary.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2443aec800 (LWP 1947))]

Thread 3 (Thread 0x7f2426877700 (LWP 2010)):
#0  0x00007f24435b6743 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2441e00101 in qt_safe_select (nfds=16,
fdread=fdread at entry=0x7f241c000a78, fdwrite=fdwrite at entry=0x7f241c000d08,
fdexcept=fdexcept at entry=0x7f241c000f98, orig_timeout=orig_timeout at entry=0x0) at
kernel/qcore_unix.cpp:75
#2  0x00007f2441e01cd2 in select (timeout=0x0, exceptfds=0x7f241c000f98,
writefds=0x7f241c000d08, readfds=0x7f241c000a78, nfds=<optimized out>,
this=0x7f241c0008c0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this at entry=0x7f241c0008e0,
flags=..., flags at entry=..., timeout=timeout at entry=0x0) at
kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f2441e02275 in QEventDispatcherUNIX::processEvents
(this=0x7f241c0008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f2441da93e2 in QEventLoop::exec (this=this at entry=0x7f2426876da0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2441b68b44 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#7  0x00007f243ba1bf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f2441b6db0e in QThreadPrivate::start (arg=0xdbecb0) at
thread/qthread_unix.cpp:337
#9  0x00007f243abe86aa in start_thread (arg=0x7f2426877700) at
pthread_create.c:333
#10 0x00007f24435bfeed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f24171b0700 (LWP 2030)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2440972644 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f2440972689 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f243abe86aa in start_thread (arg=0x7f24171b0700) at
pthread_create.c:333
#4  0x00007f24435bfeed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2443aec800 (LWP 1947)):
[KCrash Handler]
#6  QScreen::handle (this=0x0) at kernel/qscreen.cpp:85
#7  0x00007f242e97b545 in QXcbWindow::QXcbWindow (this=0x1988940,
window=0x16145f0) at qxcbwindow.cpp:260
#8  0x00007f242e9685c1 in QXcbIntegration::createPlatformWindow
(this=<optimized out>, window=0x16145f0) at qxcbintegration.cpp:194
#9  0x00007f24420fd786 in QWindowPrivate::create (this=0x19a2900,
recursive=recursive at entry=false) at kernel/qwindow.cpp:395
#10 0x00007f24420fd97b in QWindow::create (this=this at entry=0x16145f0) at
kernel/qwindow.cpp:539
#11 0x00007f2442100678 in QWindow::setVisible (this=0x16145f0,
visible=<optimized out>) at kernel/qwindow.cpp:475
#12 0x00007f2440d09bee in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f243b993b7f in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData
const&, QVariant const&, QQmlContextData*,
QFlags<QQmlPropertyPrivate::WriteFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f243b9955fb in QQmlPropertyPrivate::writeValueProperty(QObject*,
QQmlPropertyData const&, QVariant const&, QQmlContextData*,
QFlags<QQmlPropertyPrivate::WriteFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f243b995d31 in QQmlPropertyPrivate::writeBinding(QObject*,
QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*,
QV4::ValueRef, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f243ba0a51c in
QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f243ba0ac7e in
QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f243b9e4497 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*,
void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f243b98110c in QQmlData::signalEmitted(QAbstractDeclarativeData*,
QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f2441ddc141 in QMetaObject::activate (sender=sender at entry=0xcf10b0,
signalOffset=<optimized out>, local_signal_index=local_signal_index at entry=0,
argv=argv at entry=0x0) at kernel/qobject.cpp:3603
#21 0x00007f2441ddd057 in QMetaObject::activate (sender=sender at entry=0xcf10b0,
m=m at entry=0x7f24434ad9a0 <KWin::Outline::staticMetaObject>,
local_signal_index=local_signal_index at entry=0, argv=argv at entry=0x0) at
kernel/qobject.cpp:3582
#22 0x00007f244321d7a0 in KWin::Outline::activeChanged
(this=this at entry=0xcf10b0) at moc_outline.cpp:182
#23 0x00007f2443115c8d in KWin::Outline::show (this=0xcf10b0) at
../outline.cpp:57
#24 0x00007f2443115cd2 in KWin::Outline::show (this=<optimized out>,
outlineGeometry=...) at ../outline.cpp:84
#25 0x00007f244314c4fa in KWin::Client::setElectricBorderMaximizing
(this=this at entry=0xc25940, maximizing=maximizing at entry=true) at
../geometry.cpp:3095
#26 0x00007f2443117dbd in KWin::Client::checkQuickTilingMaximizationZones
(this=this at entry=0xc25940, xroot=xroot at entry=1916, yroot=yroot at entry=33) at
../events.cpp:1354
#27 0x00007f24431199b9 in KWin::Client::motionNotifyEvent (this=0xc25940,
w=<optimized out>, state=<optimized out>, x=852, y=23, x_root=1916, y_root=33)
at ../events.cpp:1403
#28 0x00007f2443119ad1 in KWin::Client::windowEvent (this=0xc25940,
e=0x7f24280076e0) at ../events.cpp:702
#29 0x00007f244311afd0 in KWin::Workspace::workspaceEvent (this=0xc75b70,
e=0x7f24280076e0) at ../events.cpp:366
#30 0x00007f2441da8510 in QAbstractEventDispatcher::filterNativeEvent
(this=this at entry=0xc46080, eventType=..., message=message at entry=0x7f24280076e0,
result=result at entry=0x7ffe1cd29fe8) at kernel/qabstracteventdispatcher.cpp:460
#31 0x00007f242e96602d in QXcbConnection::handleXcbEvent
(this=this at entry=0xc0eae0, event=event at entry=0x7f24280076e0) at
qxcbconnection.cpp:863
#32 0x00007f242e9674bb in QXcbConnection::processXcbEvents (this=0xc0eae0) at
qxcbconnection.cpp:1303
#33 0x00007f2441ddd73a in QObject::event (this=0xc0eae0, e=<optimized out>) at
kernel/qobject.cpp:1245
#34 0x00007f24426b5b2c in QApplicationPrivate::notify_helper (this=0xc07d40,
receiver=0xc0eae0, e=0x7f2428007a80) at kernel/qapplication.cpp:3720
#35 0x00007f24426bb000 in QApplication::notify (this=0x7ffe1cd2a6d0,
receiver=0xc0eae0, e=0x7f2428007a80) at kernel/qapplication.cpp:3503
#36 0x00007f2441dabc2b in QCoreApplication::notifyInternal
(this=0x7ffe1cd2a6d0, receiver=0xc0eae0, event=event at entry=0x7f2428007a80) at
kernel/qcoreapplication.cpp:935
#37 0x00007f2441dadc9b in sendEvent (event=0x7f2428007a80, receiver=<optimized
out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#38 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0,
event_type=event_type at entry=0, data=0xbf82f0) at
kernel/qcoreapplication.cpp:1552
#39 0x00007f2441e02112 in QEventDispatcherUNIX::processEvents (this=0xc46080,
flags=flags at entry=...) at kernel/qeventdispatcher_unix.cpp:579
#40 0x00007f242e9bd96d in QUnixEventDispatcherQPA::processEvents
(this=<optimized out>, flags=...) at
eventdispatchers/qunixeventdispatcher.cpp:62
#41 0x00007f2441da93e2 in QEventLoop::exec (this=this at entry=0x7ffe1cd2a5f0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#42 0x00007f2441db102c in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1188
#43 0x00007f24420f031c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1510
#44 0x00007f24426b17a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#45 0x00007f24438878c3 in kdemain (argc=1, argv=0x7ffe1cd2a828) at
../main_x11.cpp:294
#46 0x00007f24434d9a40 in __libc_start_main (main=0x400790 <main(int, char**)>,
argc=3, argv=0x7ffe1cd2a828, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffe1cd2a818) at libc-start.c:289
#47 0x00000000004007c9 in _start ()

Reported using DrKonqi

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