Bug 361999

Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-18-generic x86_64
Distribution: Ubuntu 16.04 LTS

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

Logging in.
To account where I have removed alle existing kde and plasma folders.

When using another desktop (eg. lxde) everything works fine, including KDE programs.
sddm works fine.

The video is:
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09)

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 0x7fdbc8d118c0 (LWP 28087))]

Thread 8 (Thread 0x7fdbb4034700 (LWP 28096)):
#0  0x00007fdbc3425e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdbc74eac62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fdbc74ec8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fdbb6182629 in QXcbEventReader::run (this=0x17d48c0) at qxcbconnection.cpp:1253
#4  0x00007fdbc3b1b84e in QThreadPrivate::start (arg=0x17d48c0) at thread/qthread_unix.cpp:331
#5  0x00007fdbc2c086fa in start_thread (arg=0x7fdbb4034700) at pthread_create.c:333
#6  0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fdbb1826700 (LWP 28184)):
#0  0x00007fdbc3425e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdbc01bc31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdbc01bc42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdbc3d52a9b in QEventDispatcherGlib::processEvents (this=0x7fdba40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fdbc3cf9dea in QEventLoop::exec (this=this@entry=0x7fdbb1825ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fdbc3b168a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fdbc63be3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fdbc3b1b84e in QThreadPrivate::start (arg=0x189a3c0) at thread/qthread_unix.cpp:331
#8  0x00007fdbc2c086fa in start_thread (arg=0x7fdbb1826700) at pthread_create.c:333
#9  0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fdba21dd700 (LWP 28185)):
#0  0x00007fdbc01b9367 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fdbc01bbc7a in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdbc01bc2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdbc01bc42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdbc3d52a9b in QEventDispatcherGlib::processEvents (this=0x7fdb9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fdbc3cf9dea in QEventLoop::exec (this=this@entry=0x7fdba21dcce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fdbc3b168a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fdbc63be3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fdbc3b1b84e in QThreadPrivate::start (arg=0x1b65900) at thread/qthread_unix.cpp:331
#9  0x00007fdbc2c086fa in start_thread (arg=0x7fdba21dd700) at pthread_create.c:333
#10 0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fdba0b65700 (LWP 28190)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fdbc8763bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fdbc8763c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fdbc2c086fa in start_thread (arg=0x7fdba0b65700) at pthread_create.c:333
#4  0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fdb1b9b9700 (LWP 28195)):
#0  0x00007fdbc34219cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdbc01ff6c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdbc01bbe04 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdbc01bc2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdbc01bc42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdbc3d52a9b in QEventDispatcherGlib::processEvents (this=0x7fdb140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fdbc3cf9dea in QEventLoop::exec (this=this@entry=0x7fdb1b9b8ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fdbc3b168a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fdbc63be3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fdbc3b1b84e in QThreadPrivate::start (arg=0x1d241b0) at thread/qthread_unix.cpp:331
#10 0x00007fdbc2c086fa in start_thread (arg=0x7fdb1b9b9700) at pthread_create.c:333
#11 0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fdb13fff700 (LWP 28238)):
#0  0x00007fdbc34219cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdbc01ff6c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdbc01bbe04 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdbc01bc2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdbc01bc42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdbc3d52a9b in QEventDispatcherGlib::processEvents (this=0x7fdb0c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fdbc3cf9dea in QEventLoop::exec (this=this@entry=0x7fdb13ffec90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fdbc3b168a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fdbc6d44ed6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fdbc3b1b84e in QThreadPrivate::start (arg=0x1e59e80) at thread/qthread_unix.cpp:331
#10 0x00007fdbc2c086fa in start_thread (arg=0x7fdb13fff700) at pthread_create.c:333
#11 0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fdb01e93700 (LWP 28416)):
#0  0x00007fdbc0200a64 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fdbc01bc311 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdbc01bc42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdbc3d52a9b in QEventDispatcherGlib::processEvents (this=0x7fdafc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fdbc3cf9dea in QEventLoop::exec (this=this@entry=0x7fdb01e92cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fdbc3b168a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fdb043737d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fdbc3b1b84e in QThreadPrivate::start (arg=0x43acef0) at thread/qthread_unix.cpp:331
#8  0x00007fdbc2c086fa in start_thread (arg=0x7fdb01e93700) at pthread_create.c:333
#9  0x00007fdbc3431b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fdbc8d118c0 (LWP 28087)):
[KCrash Handler]
#6  0x00007fdb043918a6 in JobModel::updateJob(int, KCupsJob const&) () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fdb0439623f in JobModel::getJobFinished() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fdb0439a145 in ?? () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007fdbc3d2bea1 in QObject::event (this=0x43a60a0, e=<optimized out>) at kernel/qobject.cpp:1239
#10 0x00007fdbc47ff05c in QApplicationPrivate::notify_helper (this=this@entry=0x17bd690, receiver=receiver@entry=0x43a60a0, e=e@entry=0x7fdafc013890) at kernel/qapplication.cpp:3716
#11 0x00007fdbc4804516 in QApplication::notify (this=0x7fffa20a3f30, receiver=0x43a60a0, e=0x7fdafc013890) at kernel/qapplication.cpp:3499
#12 0x00007fdbc3cfc62b in QCoreApplication::notifyInternal (this=0x7fffa20a3f30, receiver=0x43a60a0, event=event@entry=0x7fdafc013890) at kernel/qcoreapplication.cpp:965
#13 0x00007fdbc3cfea26 in QCoreApplication::sendEvent (event=0x7fdafc013890, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x17b3600) at kernel/qcoreapplication.cpp:1593
#15 0x00007fdbc3cfef08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#16 0x00007fdbc3d52673 in postEventSourceDispatch (s=0x17fd830) at kernel/qeventdispatcher_glib.cpp:271
#17 0x00007fdbc01bc127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fdbc01bc380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fdbc01bc42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fdbc3d52a7f in QEventDispatcherGlib::processEvents (this=0x17faef0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#21 0x00007fdbc3cf9dea in QEventLoop::exec (this=this@entry=0x7fffa20a3dd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#22 0x00007fdbc3d01e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#23 0x00007fdbc4035c3c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1542
#24 0x00007fdbc47fb495 in QApplication::exec () at kernel/qapplication.cpp:2976
#25 0x0000000000432d4a in main (argc=2, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181

Reported using DrKonqi