Application: plasmashell (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-28-generic x86_64
Distribution: Ubuntu 15.04

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

Nothing — the computer was idle overnight.  But Plasma has crashed several times since I installed Kubuntu on this computer, a MacBook Pro with an attached (with Thunderbolt) second display.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7f4ae97b77c0 (LWP 2399))]

Thread 34 (Thread 0x7f4ad5535700 (LWP 2401)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae6ad3b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4ae6ad564f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4ad787c099 in QXcbEventReader::run (this=0x2502a10) at qxcbconnection.cpp:1105
#4  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x2502a10) at thread/qthread_unix.cpp:337
#5  0x00007f4ae3ded6aa in start_thread (arg=0x7f4ad5535700) at pthread_create.c:333
#6  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7f4ace9db700 (LWP 2461)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0c72ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4ac00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4ace9dade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x25d14a0) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f4ace9db700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7f4abefe6700 (LWP 2463)):
#0  0x00007f4ae0c72390 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4ab80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4abefe5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x2eb4210) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f4abefe6700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7f4abd587700 (LWP 2509)):
#0  0x00007f4ae0c728a8 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4ab00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4abd586de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x30fc3d0) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f4abd587700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7f4ab7fff700 (LWP 2510)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0c72ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4aac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4ab7ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x308d450) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f4ab7fff700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7f4ab6ffe700 (LWP 2511)):
#0  0x00007f4ae0c6fefe in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c727ef in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4aa40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4ab6ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3216400) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f4ab6ffe700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7f4ab5ffd700 (LWP 2512)):
#0  0x00007f4ae0c72e4b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4aa80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4ab5ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3308cf0) at thread/qthread_unix.cpp:337
#7  0x00007f4ae3ded6aa in start_thread (arg=0x7f4ab5ffd700) at pthread_create.c:333
#8  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7f4ab4ffc700 (LWP 2514)):
#0  0x00007f4ae0cb7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72ea2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4a9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4ab4ffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x33d3710) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f4ab4ffc700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7f4aa37ff700 (LWP 2519)):
#0  _dl_update_slotinfo (req_modid=1) at dl-tls.c:642
#1  0x00007f4ae975a87c in update_get_addr (ti=0x7f4ae5081680) at dl-tls.c:801
#2  0x00007f4ae4be6a12 in get_thread_data () at thread/qthread_unix.cpp:181
#3  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:212
#4  0x00007f4ae4e7e1ba in postEventSourcePrepare (s=0x7f4a980012d0, timeout=0x7f4aa37fec14) at kernel/qeventdispatcher_glib.cpp:247
#5  0x00007f4ae0c723fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4a980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#9  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4aa37fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#11 0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x34dce30) at thread/qthread_unix.cpp:337
#13 0x00007f4ae3ded6aa in start_thread (arg=0x7f4aa37ff700) at pthread_create.c:333
#14 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7f4aa27fe700 (LWP 2524)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0c72ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4a900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4aa27fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x35ee2d0) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f4aa27fe700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7f4aa15f5700 (LWP 2525)):
#0  0x00007f4ae0cb7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72a16 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4a940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4aa15f4de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x36d5ca0) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f4aa15f5700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7f4a8ffff700 (LWP 2526)):
#0  0x00007f4ae0cb77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72fd6 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4a880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4a8fffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x37ac1f0) at thread/qthread_unix.cpp:337
#7  0x00007f4ae3ded6aa in start_thread (arg=0x7f4a8ffff700) at pthread_create.c:333
#8  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f4a8effe700 (LWP 2528)):
#0  0x00007f4ae0c99df0 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72fbd in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f4a800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f4a8effdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x389d760) at thread/qthread_unix.cpp:337
#7  0x00007f4ae3ded6aa in start_thread (arg=0x7f4a8effe700) at pthread_create.c:333
#8  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f4a8cffc700 (LWP 2532)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4ae88f1644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f4ae88f1689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f4ae3ded6aa in start_thread (arg=0x7f4a8cffc700) at pthread_create.c:333
#4  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f49fffff700 (LWP 2533)):
#0  0x00007f4ae456249d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0cb62f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c7296c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49ffffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3a90df0) at thread/qthread_unix.cpp:337
#10 0x00007f4ae3ded6aa in start_thread (arg=0x7f49fffff700) at pthread_create.c:333
#11 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f49fe8ca700 (LWP 2542)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0c72ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49fe8c9de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3e89260) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f49fe8ca700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f49effff700 (LWP 2554)):
#0  0x00007f4ae456249d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0cb62f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c7296c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49f40034c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49efffed90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f4ae945ab56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3d94fe0) at thread/qthread_unix.cpp:337
#10 0x00007f4ae3ded6aa in start_thread (arg=0x7f49effff700) at pthread_create.c:333
#11 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f49fcf93700 (LWP 2555)):
#0  0x00007f4ae0c723e4 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49fcf92de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3ecd9c0) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f49fcf93700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f49eeffe700 (LWP 2567)):
#0  0x00007f4ae0cb77a0 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72fd6 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49e00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49eeffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x3fee260) at thread/qthread_unix.cpp:337
#7  0x00007f4ae3ded6aa in start_thread (arg=0x7f49eeffe700) at pthread_create.c:333
#8  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f49ed7fc700 (LWP 2569)):
#0  0x00007f4ae0cb77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c723f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49ed7fbd90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae945ab56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x415c6a0) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f49ed7fc700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f49edffd700 (LWP 2577)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0c72ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49e40039e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49edffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x55aecf0) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f49edffd700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f49dd35f700 (LWP 2653)):
#0  0x00007f4ae0cb7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72fb8 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49dd35ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x5cd1e40) at thread/qthread_unix.cpp:337
#7  0x00007f4ae3ded6aa in start_thread (arg=0x7f49dd35f700) at pthread_create.c:333
#8  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f49d3ddd700 (LWP 2654)):
#0  loadAcquire<int> (_q_value=@0x7f4ae5082a20: 1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:102
#1  loadAcquire (this=0x7f4ae5082a20 <unixCheckClockType()::clockToUse>) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:113
#2  unixCheckClockType () at tools/qelapsedtimer_unix.cpp:125
#3  QElapsedTimer::clockType () at tools/qelapsedtimer_unix.cpp:155
#4  0x00007f4ae4c9dc79 in QElapsedTimer::isMonotonic () at tools/qelapsedtimer_unix.cpp:150
#5  0x00007f4ae4e7cb3e in QTimerInfoList::repairTimersIfNeeded (this=0x7f49cc002cd0) at kernel/qtimerinfo_unix.cpp:155
#6  0x00007f4ae4e7cbb3 in QTimerInfoList::timerWait (this=0x7f49cc002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:380
#7  0x00007f4ae4e7e03e in timerSourcePrepareHelper (timeout=0x7f49d3ddcc14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f49d3ddcc14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f4ae0c723fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49d3ddcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x5efb150) at thread/qthread_unix.cpp:337
#17 0x00007f4ae3ded6aa in start_thread (arg=0x7f49d3ddd700) at pthread_create.c:333
#18 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f49d2ddc700 (LWP 2655)):
#0  __GI___pthread_getspecific (key=3) at pthread_getspecific.c:61
#1  0x00007f4ae0c99e00 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c71ddc in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72d75 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49d2ddbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x6005bb0) at thread/qthread_unix.cpp:337
#10 0x00007f4ae3ded6aa in start_thread (arg=0x7f49d2ddc700) at pthread_create.c:333
#11 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f49d1d5b700 (LWP 2656)):
#0  0x00007f4ae0cb77a0 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72852 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49d1d5ade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x60d4c10) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f49d1d5b700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f49d0c5a700 (LWP 2657)):
#0  0x00007f4ae0cb77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c726f9 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72e37 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49d0c59de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x62042f0) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f49d0c5a700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f49c37ff700 (LWP 2658)):
#0  0x00007f4ae0c6feb3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c727ef in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49b80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49c37fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x62de900) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f49c37ff700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f49c27fe700 (LWP 2659)):
#0  0x00007f4ae0cb7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c72a16 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49b00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49c27fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x63c03e0) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f49c27fe700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f49c17fd700 (LWP 2660)):
#0  0x00007f4ae0c6fefe in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4ae0c7239b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49c17fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x64aa300) at thread/qthread_unix.cpp:337
#9  0x00007f4ae3ded6aa in start_thread (arg=0x7f49c17fd700) at pthread_create.c:333
#10 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f49abb37700 (LWP 2661)):
#0  0x00007f4ae456249d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0cb62f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c7296c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae0c72e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49abb36dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f49addf3cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x6a2f270) at thread/qthread_unix.cpp:337
#10 0x00007f4ae3ded6aa in start_thread (arg=0x7f49abb37700) at pthread_create.c:333
#11 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f49aa4d7700 (LWP 2664)):
#0  0x00007ffe39ff89a7 in clock_gettime ()
#1  0x00007f4ae458038d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f4ae4c9dcb6 in qt_clock_gettime (ts=0x7f49aa4d6b40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f4ae4e7c639 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f49a0003650) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f4ae4e7cba5 in QTimerInfoList::timerWait (this=0x7f49a0003650, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f4ae4e7e03e in timerSourcePrepareHelper (timeout=0x7f49aa4d6c14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f49aa4d6c14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f4ae0c723fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f4ae0c72de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f49a0003260, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49aa4d6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x66507a0) at thread/qthread_unix.cpp:337
#17 0x00007f4ae3ded6aa in start_thread (arg=0x7f49aa4d7700) at pthread_create.c:333
#18 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f49a94d6700 (LWP 2873)):
#0  0x00007f4ae45668dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ae0c72ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x7f499c002ef0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7f49a94d5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4ae4be2b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4ae6970f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x7b26620) at thread/qthread_unix.cpp:337
#8  0x00007f4ae3ded6aa in start_thread (arg=0x7f49a94d6700) at pthread_create.c:333
#9  0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f49aacd8700 (LWP 13596)):
[KCrash Handler]
#6  0x00007f4ae8cacb90 in Plasma::Package::addDirectoryDefinition (this=this@entry=0x0, key=key@entry=0x7f49fcf973af "images", path=..., name=...) at ../../../src/plasma/package.cpp:222
#7  0x00007f49fcf9679b in WallpaperPackage::initPackage (this=<optimized out>, package=0x0) at ../../../../shell/packageplugins/wallpaperimages/wallpaperpackage.cpp:34
#8  0x00007f4ae8cae6c3 in Plasma::PackageStructureWrapper::initPackage (this=<optimized out>, package=0x7f4a84065410) at ../../../src/plasma/packagestructure.cpp:59
#9  0x00007f4ae8cad0e4 in Plasma::Package::Package (this=0x7f49aacd7d70, structure=0x3d97ba0) at ../../../src/plasma/package.cpp:76
#10 0x00007f4ae8c7ade4 in Plasma::PluginLoader::loadPackage (this=0x25b53b0, packageFormat=..., specialization=...) at ../../../src/plasma/pluginloader.cpp:420
#11 0x00007f49fd458020 in BackgroundFinder::run (this=0x7bca300) at ../../../wallpapers/image/backgroundlistmodel.cpp:463
#12 0x00007f4ae4be7b0e in QThreadPrivate::start (arg=0x7bca300) at thread/qthread_unix.cpp:337
#13 0x00007f4ae3ded6aa in start_thread (arg=0x7f49aacd8700) at pthread_create.c:333
#14 0x00007f4ae4571eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f4ae97b77c0 (LWP 2399)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4ae6ad3db9 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4ae6ad53ff in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4ae6ad5512 in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f4ae6d2569f in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007f4adce94eca in XSyncQueryCounter () from /usr/lib/x86_64-linux-gnu/libXext.so.6
#6  0x00007f49c0191074 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5IdleTime.so.5
#7  0x00007f49c03c7aa2 in PowermanagementEngine::updateSourceEvent (this=0x65cb410, source=...) at ../../../dataengines/powermanagement/powermanagementengine.cpp:313
#8  0x00007f4ae8c9d70b in Plasma::DataEnginePrivate::internalUpdateSource (this=0x65cb4d0, source=0x6705c90) at ../../../src/plasma/dataengine.cpp:480
#9  0x00007f4ae4e569c9 in QMetaObject::activate (sender=0x6705c90, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe39ff2c20) at kernel/qobject.cpp:3716
#10 0x00007f4ae4e57057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f4ae8efcac0 <Plasma::DataContainer::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe39ff2c20) at kernel/qobject.cpp:3582
#11 0x00007f4ae8c99eb2 in Plasma::DataContainer::updateRequested (this=<optimized out>, _t1=0x6705c90) at ./moc_datacontainer.cpp:246
#12 0x00007f4ae8ca4228 in Plasma::SignalRelay::timerEvent (this=0x66f30b0, event=<optimized out>) at ../../../src/plasma/private/datacontainer_p.cpp:154
#13 0x00007f4ae4e576f3 in QObject::event (this=0x66f30b0, e=<optimized out>) at kernel/qobject.cpp:1267
#14 0x00007f4ae572fb2c in QApplicationPrivate::notify_helper (this=0x24ec4b0, receiver=0x66f30b0, e=0x7ffe39ff2f30) at kernel/qapplication.cpp:3720
#15 0x00007f4ae5735000 in QApplication::notify (this=0x7ffe39ff3300, receiver=0x66f30b0, e=0x7ffe39ff2f30) at kernel/qapplication.cpp:3503
#16 0x00007f4ae4e25c2b in QCoreApplication::notifyInternal (this=0x7ffe39ff3300, receiver=0x66f30b0, event=event@entry=0x7ffe39ff2f30) at kernel/qcoreapplication.cpp:935
#17 0x00007f4ae4e7dae5 in sendEvent (event=0x7ffe39ff2f30, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#18 QTimerInfoList::activateTimers (this=0x2522da0) at kernel/qtimerinfo_unix.cpp:635
#19 0x00007f4ae4e7df61 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#20 0x00007f4ae0c72c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f4ae0c72f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f4ae0c72fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f4ae4e7ec6c in QEventDispatcherGlib::processEvents (this=0x2521090, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#24 0x00007f4ae4e233e2 in QEventLoop::exec (this=this@entry=0x7ffe39ff3180, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#25 0x00007f4ae4e2b02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#26 0x00007f4ae516a31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#27 0x00007f4ae572b7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#28 0x000000000042fd9b in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:158

Reported using DrKonqi