Application: plasmashell (5.8.7)

Qt Version: 5.9.1
Frameworks Version: 5.28.0
Operating System: Linux 4.12.0-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
- What I was doing when the application crashed:
I have 3 monitors connected through 3 display ports. I'm using open source radeondrm drivers. When all 3 monitors goes to sleep and are later awaken, then there are no panels, looks like plasma shell restarts.

When I try to add new panel it appears on the last onitor, and when I try to drag it to other monitor then plasmashell crashes again.

The crash can be reproduced every time.

-- Backtrace:
Application: Plazma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f35e7380540 (LWP 5849))]

Thread 13 (Thread 0x7f34f96da700 (LWP 5877)):
#0  0x00007f35e0d5666d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f35dbc2a119 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f35dbc2a22c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f35e167541b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f35e161adba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f35e143a3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f35e47f39d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f35e143f29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f35e0559494 in start_thread (arg=0x7f34f96da700) at pthread_create.c:333
#9  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 12 (Thread 0x7f352bdbe700 (LWP 5861)):
#0  0x00007f35e0d5666d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f35dbc2a119 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f35dbc2a22c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f35e167541b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f35e161adba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f35e143a3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f35e51937e6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f35e143f29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f35e0559494 in start_thread (arg=0x7f352bdbe700) at pthread_create.c:333
#9  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 11 (Thread 0x7f3530860700 (LWP 5860)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f353746979b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f35374694c7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f35e0559494 in start_thread (arg=0x7f3530860700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 10 (Thread 0x7f3531061700 (LWP 5859)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f353746979b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f35374694c7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f35e0559494 in start_thread (arg=0x7f3531061700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 9 (Thread 0x7f3531862700 (LWP 5858)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f353746979b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f35374694c7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f35e0559494 in start_thread (arg=0x7f3531862700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 8 (Thread 0x7f3532063700 (LWP 5857)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f353746979b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f35374694c7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f35e0559494 in start_thread (arg=0x7f3532063700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 7 (Thread 0x7f3532a9c700 (LWP 5856)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f353746979b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f35374694c7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f35e0559494 in start_thread (arg=0x7f3532a9c700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 6 (Thread 0x7f353329d700 (LWP 5855)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f353746979b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f35374694c7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f35e0559494 in start_thread (arg=0x7f353329d700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 5 (Thread 0x7f35c0d3a700 (LWP 5854)):
#0  0x00007f35e055f15f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f35e6c4b634 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f35e6c4b679 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f35e0559494 in start_thread (arg=0x7f35c0d3a700) at pthread_create.c:333
#4  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 4 (Thread 0x7f35c2d9a700 (LWP 5853)):
#0  0x00007f35e0d5666d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f35dbc2a119 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f35dbc2a22c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f35e167541b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f35e161adba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f35e143a3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f35e47f39d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f35e143f29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f35e0559494 in start_thread (arg=0x7f35c2d9a700) at pthread_create.c:333
#9  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 3 (Thread 0x7f35c8f2d700 (LWP 5852)):
#0  0x00007f35dbc6f599 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f35dbc29663 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f35dbc2a04b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f35dbc2a22c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f35e167541b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f35e161adba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f35e143a3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f35e47f39d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f35e143f29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f35e0559494 in start_thread (arg=0x7f35c8f2d700) at pthread_create.c:333
#10 0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 2 (Thread 0x7f35ca972700 (LWP 5851)):
#0  0x00007f35e0d5666d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f35dbc2a119 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f35dbc2a22c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f35e167541b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f35e161adba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f35e143a3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f35e2258e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f35e143f29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f35e0559494 in start_thread (arg=0x7f35ca972700) at pthread_create.c:333
#9  0x00007f35e0d5fabf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 1 (Thread 0x7f35e7380540 (LWP 5849)):
[KCrash Handler]
#6  0x00007f35098aa4f4 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/applets/plasma_applet_notifications.so
#7  0x00007f35e164b97f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x000055842d614394 in  ()
#9  0x00007f35e164b97f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f35e164bfdf in QObject::destroyed(QObject*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f35e165275a in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f35e57050e9 in Plasma::Containment::~Containment() () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#13 0x00007f35e164c3f0 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f35e262146c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f35e2628d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f35e161cd68 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f35e161f4dd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f35e1675dd3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f35dbc29f67 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f35dbc2a1a0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f35dbc2a22c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f35e16753ff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f35e161adba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f35e1623d24 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x000055842d5f52df in  ()
#26 0x00007f35e0c972e1 in __libc_start_main (main=0x55842d5f4780, argc=1, argv=0x7ffd065b5688, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd065b5678) at ../csu/libc-start.c:291
#27 0x000055842d5f565a in _start ()

Reported using DrKonqi