Hi,

Just some background information first. I bought a Mac Book Pro, and replaced the OS with Kubuntu obviously, because I have been using Kubuntu for so long I just can't switch now, know what I mean? And all went swimmingly well, until I had to install(I think this was the issue start point) subversion 1.7. At this time I have two screens connected to the machine, a LG 4K screen and the laptop screen. At which point I had to add the ppa wandisco. And I guess there are some incompatibilities in the libraries, specifically libjpeg8.

Now when I boot(with screen attached or attach the screen after boot) there is a seg fault in the krunner, QT perhaps? Takes a very long time to finally initialize, but does eventually, but the laptop screen is not operational(which I don't care about), but troublesome because the same thing was happening with the last laptop I had(which eventually dies a horrible death, Sony Vaio Z) and I am now suspicious that the reason the hardware gave up is because of this continual crashing?

So I am particularly interested to resolve this issue, if there is someone that is not only a genius but clairvoyant and telepathic, and can communicate directly with the machine and the kernel please feel free to offer sage guidance to achieve optimal Plasma usage.

I could post the crash report, but will look very ugly no, and I don't see a 'file attach' link. But I should anyway right...

Cheers,
Michael

Code: Select all

Application: krunner (0.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-35-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

The crash can be reproduced every time.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3fce92a800 (LWP 1327))]

Thread 4 (Thread 0x7f3fbad30700 (LWP 1331)):
#0  0x00007f3fcb3e588d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3fca8d7bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f3fca8d974f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f3fbd07aa39 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007f3fcbad82be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3fc96446aa in start_thread (arg=0x7f3fbad30700) at pthread_create.c:333
#6  0x00007f3fcb3f0e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3fb1a6a700 (LWP 1346)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3fb8e5c4da in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f3fb8e5bc17 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f3fc96446aa in start_thread (arg=0x7f3fb1a6a700) at pthread_create.c:333
#4  0x00007f3fcb3f0e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3fad527700 (LWP 1379)):
#0  0x00007f3fcb3e588d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3fc8ac51ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3fc8ac52fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3fcbd0f29b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3fcbcb575a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3fcbad33d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f3fcd8daf85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f3fcbad82be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f3fc96446aa in start_thread (arg=0x7f3fad527700) at pthread_create.c:333
#9  0x00007f3fcb3f0e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3fce92a800 (LWP 1327)):
[KCrash Handler]
#6  0x00007f3fbd075112 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#7  0x00007f3fbd075e03 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#8  0x00007f3fbd0777f0 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#9  0x00007f3fcbfe7a19 in QInternalMimeData::formats() const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f3fbd0774e5 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#11 0x00007f3fcbfe78b6 in QInternalMimeData::hasFormat(QString const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007f3fcbce1c16 in QMimeData::hasText() const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f3fcde33eb8 in QQuickTextInput::q_canPasteChanged() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f3fcdf125d0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f3fcbce878a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f3fcbfe4509 in QClipboard::emitChanged(QClipboard::Mode) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#17 0x00007f3fbd076089 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#18 0x00007f3fbd07c695 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#19 0x00007f3fbd07d3b3 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#20 0x00007f3fcbce9651 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f3fcc80ab8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f3fcc810230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f3fcbcb7f1b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f3fcbcba057 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f3fcbd0ee73 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f3fc8ac4ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f3fc8ac5250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f3fc8ac52fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f3fcbd0f29b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f3fcbcb575a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f3fcbcbd2cc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x0000000000407b89 in main (argc=1, argv=<optimized out>) at ../../krunner/main.cpp:80

Report to https://bugs.kde.org/