Bug 369537

Summary: Plasmashell crashes when enabling disabled monitor after resume
Product: [Plasma] plasmashell Reporter: Erin of Yukis <erin-kde>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED FIXED    
Severity: crash CC: bshah, notmart, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.6.5   
Target Milestone: 1.0   
Platform: Debian testing   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Erin of Yukis 2016-09-29 16:01:20 UTC 
Application: plasmashell (5.6.5)

Qt Version: 5.6.1
Frameworks Version: 5.23.0
Operating System: Linux 4.6.0-1-amd64 x86_64
Distribution: Tanglu GNU/Linux 4 (Dasyatis kuhlii)

-- Information about the crash:
- Steps to reproduce:
 * Plug in external monitor
 * Disable the monitor in the system settings
 * Suspend the system
 * Resume the system
 * Enable the monitor in the system settings again

- System details:
 * Laptop: Lenovo Y700-ACZ
 * Monitor: Samsung SyncMaster 225BW
 * GPU: Radeon R9 M280X (Open-source `radeon` driver, compositing enabled)
 * Monitor connected on HDMI port with an HDMI2DVI adapter

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 0x7fb2a98c4940 (LWP 24573))]

Thread 13 (Thread 0x7fb1bb7ff700 (LWP 13702)):
#0  0x00007fb2a0e47914 in g_mutex_unlock (mutex=0x7fb1a4000990) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gthread-posix.c:1348
#1  0x00007fb2a0e00fc0 in g_main_context_prepare (context=context@entry=0x7fb1a4000990, priority=priority@entry=0x7fb1bb7feb20) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3497
#2  0x00007fb2a0e019bb in g_main_context_iterate (context=context@entry=0x7fb1a4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3907
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb1a4000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a7110405 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb1bb7ff700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fb1ca13e700 (LWP 10813)):
#0  0x00007fb2a0e478f9 in g_mutex_lock (mutex=mutex@entry=0x7fb1c4010200) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gthread-posix.c:1336
#1  0x00007fb2a0e00fd9 in g_main_context_prepare (context=context@entry=0x7fb1c4010200, priority=priority@entry=0x7fb1ca13db40) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3502
#2  0x00007fb2a0e019bb in g_main_context_iterate (context=context@entry=0x7fb1c4010200, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3907
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb1c4010200, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb2a38f6464 in start_thread (arg=0x7fb1ca13e700) at pthread_create.c:334
#9  0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fb1c2ffe700 (LWP 1869)):
#0  0x00007fff765da967 in  ()
#1  0x00007fff765dac65 in clock_gettime ()
#2  0x00007fb2a410ca26 in __GI___clock_gettime (clock_id=1, tp=0x7fb1c2ffd9c0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fb2a48986c6 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb2a4a13d59 in QTimerInfoList::updateCurrentTime() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a4a142c5 in QTimerInfoList::timerWait(timespec&) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a4a156ae in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a0e00fcd in g_main_context_prepare (context=context@entry=0x7fb1b4000990, priority=priority@entry=0x7fb1c2ffdb20) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3499
#8  0x00007fb2a0e019bb in g_main_context_iterate (context=context@entry=0x7fb1b4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3907
#9  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb1b4000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#10 0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fb2a7110405 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fb2a38f6464 in start_thread (arg=0x7fb1c2ffe700) at pthread_create.c:334
#16 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fb1c3fff700 (LWP 1399)):
#0  0x00007fb2a40f6dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb2a0e01a8c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fb1bc002870, timeout=<optimized out>, context=0x7fb1bc000990) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:4226
#2  0x00007fb2a0e01a8c in g_main_context_iterate (context=context@entry=0x7fb1bc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3922
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb1bc000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a7110405 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb1c3fff700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fb1eb206700 (LWP 24631)):
#0  0x00007fb2a0e47914 in g_mutex_unlock (mutex=0x7fb1e400e820) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gthread-posix.c:1348
#1  0x00007fb2a0e01a81 in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fb1e400d520, timeout=<optimized out>, context=0x7fb1e400e820) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:4225
#2  0x00007fb2a0e01a81 in g_main_context_iterate (context=context@entry=0x7fb1e400e820, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3922
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb1e400e820, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb1d79a8317 in KCupsConnection::run() () at /lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb1eb206700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fb1eaa05700 (LWP 24590)):
#0  0x00007fb2a0e47914 in g_mutex_unlock (mutex=0x7fb1dc00d3e0) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gthread-posix.c:1348
#1  0x00007fb2a0e00fc0 in g_main_context_prepare (context=context@entry=0x7fb1dc00d3e0, priority=priority@entry=0x7fb1eaa04ad0) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3497
#2  0x00007fb2a0e019bb in g_main_context_iterate (context=context@entry=0x7fb1dc00d3e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3907
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb1dc00d3e0, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a7aa5806 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb1eaa05700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fb271d8e700 (LWP 24585)):
#0  0x00007fb2a38fc05f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb2a9563574 in  () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fb2a95635b9 in  () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fb2a38f6464 in start_thread (arg=0x7fb271d8e700) at pthread_create.c:334
#4  0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fb2735de700 (LWP 24584)):
#0  0x00007fb2a0e47914 in g_mutex_unlock (mutex=0x7fb26c000990) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gthread-posix.c:1348
#1  0x00007fb2a0e00fc0 in g_main_context_prepare (context=context@entry=0x7fb26c000990, priority=priority@entry=0x7fb2735ddb20) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3497
#2  0x00007fb2a0e019bb in g_main_context_iterate (context=context@entry=0x7fb26c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3907
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb26c000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a7110405 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb2735de700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fb279766700 (LWP 24583)):
#0  0x00007fb2a40f6dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb2a0e01a8c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fb274003070, timeout=<optimized out>, context=0x7fb274000990) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:4226
#2  0x00007fb2a0e01a8c in g_main_context_iterate (context=context@entry=0x7fb274000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3922
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb274000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a7110405 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb279766700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fb290c8e700 (LWP 24580)):
#0  0x00007fff765da969 in  ()
#1  0x00007fff765dac65 in clock_gettime ()
#2  0x00007fb2a410ca26 in __GI___clock_gettime (clock_id=1, tp=0x7fb290c8d9c0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fb2a48986c6 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb2a4a13d59 in QTimerInfoList::updateCurrentTime() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a4a142c5 in QTimerInfoList::timerWait(timespec&) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a4a156ae in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a0e00fcd in g_main_context_prepare (context=context@entry=0x7fb288000990, priority=priority@entry=0x7fb290c8db20) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3499
#8  0x00007fb2a0e019bb in g_main_context_iterate (context=context@entry=0x7fb288000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3907
#9  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb288000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#10 0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fb2a7110405 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fb2a38f6464 in start_thread (arg=0x7fb290c8e700) at pthread_create.c:334
#16 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fb2929d6700 (LWP 24579)):
#0  0x00007fb2a0e478f9 in g_mutex_lock (mutex=mutex@entry=0x7fb284000990) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gthread-posix.c:1336
#1  0x00007fb2a0e012ee in g_main_context_check (context=context@entry=0x7fb284000990, max_priority=2147483647, fds=fds@entry=0x7fb284070bb0, n_fds=n_fds@entry=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3686
#2  0x00007fb2a0e01a30 in g_main_context_iterate (context=context@entry=0x7fb284000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3924
#3  0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb284000990, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#4  0x00007fb2a4a161cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb2a47e79e4 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb2a9c34515 in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb2a38f6464 in start_thread (arg=0x7fb2929d6700) at pthread_create.c:334
#10 0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fb29420e700 (LWP 24578)):
#0  0x00007fb2a40f6dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb2a8279342 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb2a827afb7 in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb295721a89 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fb2a47ec808 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb2a38f6464 in start_thread (arg=0x7fb29420e700) at pthread_create.c:334
#6  0x00007fb2a40ffe5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb2a98c4940 (LWP 24573)):
[KCrash Handler]
#6  0x00007fb2a7fdd6e0 in Plasma::Applet::actions() const () at /lib/x86_64-linux-gnu/libKF5Plasma.so.5
#7  0x000000000044016e in  ()
#8  0x000000000044030f in  ()
#9  0x00007fb2a49eda74 in QMetaObject::activate(QObject*, int, int, void**) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb2a8cb3443 in KScreen::Output::apply(QSharedPointer<KScreen::Output> const&) () at /lib/x86_64-linux-gnu/libKF5Screen.so.7
#11 0x00007fb2a8c9865e in KScreen::Config::apply(QSharedPointer<KScreen::Config> const&) () at /lib/x86_64-linux-gnu/libKF5Screen.so.7
#12 0x00007fb2a8ca4975 in KScreen::ConfigMonitor::Private::updateConfigs(QSharedPointer<KScreen::Config> const&) () at /lib/x86_64-linux-gnu/libKF5Screen.so.7
#13 0x00007fb2a8ca6375 in KScreen::ConfigMonitor::Private::edidReady(QDBusPendingCallWatcher*) () at /lib/x86_64-linux-gnu/libKF5Screen.so.7
#14 0x00007fb2a49eda74 in QMetaObject::activate(QObject*, int, int, void**) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fb2a9c8ac4f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#16 0x00007fb2a9c8ad48 in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#17 0x00007fb2a49ee569 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fb2a5303afc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fb2a5309036 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fb2a49c10f8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fb2a49c2fba in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fb2a4a15da3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fb2a0e01897 in g_main_context_dispatch (context=0x7fb28c0016f0) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3201
#24 0x00007fb2a0e01897 in g_main_context_dispatch (context=context@entry=0x7fb28c0016f0) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3854
#25 0x00007fb2a0e01af0 in g_main_context_iterate (context=context@entry=0x7fb28c0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3927
#26 0x00007fb2a0e01b9c in g_main_context_iteration (context=0x7fb28c0016f0, may_block=1) at /build/glib2.0-X0jKBm/glib2.0-2.49.7/./glib/gmain.c:3988
#27 0x00007fb2a4a161af in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fb2a49bee4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fb2a49c750c in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x000000000041c236 in  ()
#31 0x00007fb2a40375f0 in __libc_start_main (main=0x41b800, argc=1, argv=0x7fff765934b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff765934a8) at libc-start.c:291
#32 0x000000000041c399 in _start ()

Reported using DrKonqi
Comment 1 Marco Martin 2016-12-30 13:47:15 UTC 
this backtrace still has kscreen directly used in plasmshell, which isn't valid anymore since 5.7