Application: systemsettings5 (5.12.8)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.4.0-71-generic x86_64
Distribution: Ubuntu 18.04.5 LTS

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

i was changing ,adding, deleting themes of plasma desktop and sdmm and the app after a reboot start to crash every time i launch. i tried to reset the .config , uninstall and reinstall the package, search depencenties and other things.  
- Custom settings of the application:

The crash can be reproduced every time.

-- Backtrace:
Application: Impostazioni di sistema (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f33435c9800 (LWP 27592))]

Thread 19 (Thread 0x7f32e1a08700 (LWP 27612)):
#0  0x00007f3338eb7854 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3338e71806 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f333f9588ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f333f8fd90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f333f71c23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f333d2716f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f333f72117d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f333b1c36db in start_thread (arg=0x7f32e1a08700) at pthread_create.c:463
#8  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f32e37fe700 (LWP 27610)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f52428) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f523d8, cond=0x562755f52400) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f52400, mutex=0x562755f523d8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f32e37fe700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f32e3fff700 (LWP 27609)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f52428) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f523d8, cond=0x562755f52400) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f52400, mutex=0x562755f523d8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f32e3fff700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f3300ff9700 (LWP 27608)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f52428) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f523d8, cond=0x562755f52400) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f52400, mutex=0x562755f523d8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3300ff9700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f33017fa700 (LWP 27607)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f52428) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f523d8, cond=0x562755f52400) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f52400, mutex=0x562755f523d8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f33017fa700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f3301ffb700 (LWP 27606)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f51d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f51cd0, cond=0x562755f51cf8) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f51cf8, mutex=0x562755f51cd0) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3301ffb700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f33027fc700 (LWP 27605)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f51d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f51cd0, cond=0x562755f51cf8) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f51cf8, mutex=0x562755f51cd0) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f33027fc700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f3302ffd700 (LWP 27604)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f51d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f51cd0, cond=0x562755f51cf8) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f51cf8, mutex=0x562755f51cd0) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3302ffd700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f33037fe700 (LWP 27603)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f51d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f51cd0, cond=0x562755f51cf8) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f51cf8, mutex=0x562755f51cd0) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f33037fe700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f3303fff700 (LWP 27602)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f51d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f51cd0, cond=0x562755f51cf8) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f51cf8, mutex=0x562755f51cd0) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3303fff700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f3310b72700 (LWP 27601)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f51d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f51cd0, cond=0x562755f51cf8) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f51cf8, mutex=0x562755f51cd0) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3310b72700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f3311373700 (LWP 27600)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755d888f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755d888a8, cond=0x562755d888d0) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755d888d0, mutex=0x562755d888a8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3311373700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f3311b74700 (LWP 27599)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755d888f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755d888a8, cond=0x562755d888d0) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755d888d0, mutex=0x562755d888a8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3311b74700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f3312375700 (LWP 27598)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755d888f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755d888a8, cond=0x562755d888d0) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755d888d0, mutex=0x562755d888a8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3312375700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f3312b76700 (LWP 27597)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755d888f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755d888a8, cond=0x562755d888d0) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755d888d0, mutex=0x562755d888a8) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3312b76700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f3313ae0700 (LWP 27596)):
#0  0x00007f333b1c9ad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562755f50a68) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f333b1c9ad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x562755f50a18, cond=0x562755f50a40) at pthread_cond_wait.c:502
#2  0x00007f333b1c9ad3 in __pthread_cond_wait (cond=0x562755f50a40, mutex=0x562755f50a18) at pthread_cond_wait.c:655
#3  0x00007f3319762fab in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f3319762b97 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f333b1c36db in start_thread (arg=0x7f3313ae0700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f3327065700 (LWP 27595)):
#0  0x00007f3338eb7854 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3338e716de in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3338e717fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f333f9588ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f333f8fd90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f333f71c23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f3341262d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f333f72117d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f333b1c36db in start_thread (arg=0x7f3327065700) at pthread_create.c:463
#9  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f3330669700 (LWP 27594)):
#0  0x00007f333f00fcb9 in __GI___poll (fds=0x7f3330668ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f333ad52747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f333ad5436a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f33334165e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f333f72117d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f333b1c36db in start_thread (arg=0x7f3330669700) at pthread_create.c:463
#6  0x00007f333f01c71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f33435c9800 (LWP 27592)):
[KCrash Handler]
#6  0x00007f333f92c5ea in QObject::property(char const*) const () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3310025308 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/systemsettings_sidebar_mode.so
#8  0x00007f3310025ca9 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/systemsettings_sidebar_mode.so
#9  0x00005627551c4677 in  ()
#10 0x00005627551c69a4 in  ()
#11 0x00007f333f93b074 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f333f92f07b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f334090f83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f3340917104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f333f8ff8d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f333f957d2e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f333f9584f1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f3338e71537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f3338e71770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f3338e717fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f333f95888f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f333f8fd90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f333f9069b4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00005627551c1e44 in  ()
#25 0x00007f333ef1cbf7 in __libc_start_main (main=0x5627551c1a40, argc=1, argv=0x7ffdcfaadf38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdcfaadf28) at ../csu/libc-start.c:310
#26 0x00005627551c1eca in _start ()

Reported using DrKonqi