https://bugs.kde.org/show_bug.cgi?id=418039

            Bug ID: 418039
           Summary: DigiKam - importing from camera onto removable media
           Product: kwin
           Version: 5.16.5
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kwin-bugs-n...@kde.org
          Reporter: mihaela.jurko...@gmail.com
  Target Milestone: ---

Application: kwin_x11 (5.16.5)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-40-generic x86_64
Distribution: Ubuntu 19.10

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

I was trying to import photos from a camera in DigiKam. I have a collection
setup on a removable drive. Importing there worked on my previous OS. Now I'm
new on KUbuntu 19 and I can't get it to work on the removable media. I had to
import onto the local disk instead in the end. 

- Custom settings of the application:
I didn't have the removable media set to automount when I first started
DigiKam, but I have enabled that since I started and failed the import of the
photos. The disk was mounted before I tried the download, and I could see the
path to the disk in the Collection settings
(/media/username/longdevicename/Photos)

The crash happened when I closed DigiKam, it was stable up to that point.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f027c3cad00 (LWP 12434))]

Thread 11 (Thread 0x7f01cc9f2700 (LWP 19409)):
#0  0x00007f02810d52c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x564b981e7fa0) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f02810d52c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x564b981e7f50, cond=0x564b981e7f78) at pthread_cond_wait.c:508
#2  0x00007f02810d52c6 in __pthread_cond_wait (cond=0x564b981e7f78,
mutex=0x564b981e7f50) at pthread_cond_wait.c:638
#3  0x00007f0281b66dbf in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b66eb1 in QWaitCondition::wait(QMutex*, unsigned long) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0280bfc7b9 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f0280bfca1a in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f01cdf1f700 (LWP 19408)):
#0  0x00007f02832bad26 in __GI_ppoll (fds=0x7f01c8000d68, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f0281d7b589 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f0281d7caf4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f0281d265cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b5fa45 in QThread::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f028086e319 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#8  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f026b5bf700 (LWP 18728)):
#0  0x00007f02810d52c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x564b97f6d604) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f02810d52c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x564b97f6d5b0, cond=0x564b97f6d5d8) at pthread_cond_wait.c:508
#2  0x00007f02810d52c6 in __pthread_cond_wait (cond=0x564b97f6d5d8,
mutex=0x564b97f6d5b0) at pthread_cond_wait.c:638
#3  0x00007f0281b66dbf in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b66eb1 in QWaitCondition::wait(QMutex*, unsigned long) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0280bfc7b9 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f0280bfca1a in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f0279421700 (LWP 18727)):
#0  0x00007f02832bad26 in __GI_ppoll (fds=0x7f0270007fd8, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f0281d7b589 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f0281d7caf4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f0281d265cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b5fa45 in QThread::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f028086e319 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#8  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f025ffff700 (LWP 18596)):
#0  0x00007f02810d52c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x564b97be4874) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f02810d52c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x564b97be4820, cond=0x564b97be4848) at pthread_cond_wait.c:508
#2  0x00007f02810d52c6 in __pthread_cond_wait (cond=0x564b97be4848,
mutex=0x564b97be4820) at pthread_cond_wait.c:638
#3  0x00007f0281b66dbf in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b66eb1 in QWaitCondition::wait(QMutex*, unsigned long) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0280bfc7b9 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f0280bfca1a in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f025e47a700 (LWP 12482)):
#0  0x00007f02810d52c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f02816e3fb8) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f02810d52c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x7f02816e3f68, cond=0x7f02816e3f90) at pthread_cond_wait.c:508
#2  0x00007f02810d52c6 in __pthread_cond_wait (cond=0x7f02816e3f90,
mutex=0x7f02816e3f68) at pthread_cond_wait.c:638
#3  0x00007f02815ed08a in  () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f02815ed0af in  () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f0269ceb700 (LWP 12475)):
#0  0x00007f02810d52c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x564b972f03ac) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f02810d52c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x564b972f0358, cond=0x564b972f0380) at pthread_cond_wait.c:508
#2  0x00007f02810d52c6 in __pthread_cond_wait (cond=0x564b972f0380,
mutex=0x564b972f0358) at pthread_cond_wait.c:638
#3  0x00007f026a35fabb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f026a35f6db in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f0278875700 (LWP 12471)):
#0  0x00007f02832bad26 in __GI_ppoll (fds=0x7f0264000d68, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f0281d7b589 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f0281d7caf4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f0281d265cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b5fa45 in QThread::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f028086e319 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#8  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f027a646700 (LWP 12443)):
#0  0x00007f02832bad26 in __GI_ppoll (fds=0x7f026c00ea28, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f0281d7b589 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f0281d7caf4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f0281d265cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0281b5fa45 in QThread::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f02802adefa in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#8  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f027b70d700 (LWP 12440)):
#0  0x00007f02832bac2f in __GI___poll (fds=0x7f027b70cc28, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f0281a84917 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f0281a8653a in xcb_wait_for_event () at
/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f027ba4f288 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f0281b60c92 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f02810ce669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6  0x00007f02832c7323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f027c3cad00 (LWP 12434)):
[KCrash Handler]
#6  0x00007f02831eb3eb in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f02831ca899 in __GI_abort () at abort.c:79
#8  0x00007f0281b27a99 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f0281867097 in  () at /lib/x86_64-linux-gnu/libkwineffects.so.12
#10 0x00007f02789baae4 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#11 0x00007f02789bac5f in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#12 0x00007f02789c3369 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#13 0x00007f02789c349b in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#14 0x00007f0283005527 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007f028186880f in KWin::Effect::drawWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#16 0x00007f02830054c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f0281805d4a in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#18 0x00007f02830054c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#19 0x00007f028176dab0 in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#20 0x00007f02830054c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#21 0x00007f028186880f in KWin::Effect::drawWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#22 0x00007f02830054c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#23 0x00007f028186880f in KWin::Effect::drawWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#24 0x00007f02830054c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#25 0x00007f028186880f in KWin::Effect::drawWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#26 0x00007f02830054c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#27 0x00007f0282ff3a4f in
KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#28 0x00007f0283005360 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#29 0x00007f028186868f in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#30 0x00007f0283005307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#31 0x00007f028186868f in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#32 0x00007f0283005307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#33 0x00007f028186868f in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/lib/x86_64-linux-gnu/libkwineffects.so.12
#34 0x00007f0283005307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#35 0x00007f02817f25b7 in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#36 0x00007f0283005307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#37 0x00007f028179e064 in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#38 0x00007f0283005307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#39 0x00007f02817c6249 in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#40 0x00007f0283005307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#41 0x00007f0282ffa236 in KWin::Scene::paintWindow(KWin::Scene::Window*, int,
QRegion, KWin::WindowQuadList) () at /lib/x86_64-linux-gnu/libkwin.so.5
#42 0x00007f0282ff8250 in KWin::Scene::paintGenericScreen(int,
KWin::ScreenPaintData) () at /lib/x86_64-linux-gnu/libkwin.so.5
#43 0x00007f02789c2e27 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#44 0x00007f0282ff97bd in KWin::Scene::finalPaintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#45 0x00007f02830050b2 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#46 0x00007f02817f7d35 in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#47 0x00007f0283005061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#48 0x00007f02818685c3 in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwineffects.so.12
#49 0x00007f0283005061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#50 0x00007f02818685c3 in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwineffects.so.12
#51 0x00007f0283005061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#52 0x00007f02818685c3 in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwineffects.so.12
#53 0x00007f0283005061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#54 0x00007f02818685c3 in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwineffects.so.12
#55 0x00007f0283005061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#56 0x00007f02817c6f4e in  () at
/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#57 0x00007f0283005061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /lib/x86_64-linux-gnu/libkwin.so.5
#58 0x00007f0282ff94b3 in KWin::Scene::paintScreen(int*, QRegion const&,
QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at
/lib/x86_64-linux-gnu/libkwin.so.5
#59 0x00007f02789bec7e in KWin::SceneOpenGL::paint(QRegion,
QList<KWin::Toplevel*>) () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#60 0x00007f0282feb247 in KWin::Compositor::performCompositing() () at
/lib/x86_64-linux-gnu/libkwin.so.5
#61 0x00007f0281d53de5 in QObject::event(QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#62 0x00007f028273ba86 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#63 0x00007f0282744e00 in QApplication::notify(QObject*, QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#64 0x00007f0281d27a2a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#65 0x00007f0281d7e990 in QTimerInfoList::activateTimers() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#66 0x00007f0281d7cc4f in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#67 0x00007f027ba50642 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#68 0x00007f0281d265cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#69 0x00007f0281d2e336 in QCoreApplication::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#70 0x00007f02833a087d in kdemain () at
/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#71 0x00007f02831cc1e3 in __libc_start_main (main=0x564b956ee060, argc=3,
argv=0x7ffd858747b8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd858747a8) at ../csu/libc-start.c:308
#72 0x0000564b956ee09e in _start ()
[Inferior 1 (process 12434) detached]

Reported using DrKonqi

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