https://bugs.kde.org/show_bug.cgi?id=390636

            Bug ID: 390636
           Summary: KDE is lagging and sometimes crashing after use of
                    spectacles
           Product: plasmashell
           Version: 5.12.1
          Platform: Archlinux Packages
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: k...@davidedmundson.co.uk
          Reporter: k...@dafnik.me
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Application: plasmashell (5.12.1)

Qt Version: 5.10.1
Frameworks Version: 5.43.0
Operating System: Linux 4.14.19-1-lts x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
I wanted to make a screenshot

The whole shell started lagging and after the system crashed all electron apps
have died.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc52cff7800 (LWP 1392))]

Thread 24 (Thread 0x7fc4157fa700 (LWP 1836)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 23 (Thread 0x7fc415ffb700 (LWP 1835)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#11 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7fc4167fc700 (LWP 1834)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 21 (Thread 0x7fc416ffd700 (LWP 1833)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#21 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#22 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7fc4177fe700 (LWP 1832)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7fc417fff700 (LWP 1831)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#13 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7fc434ff9700 (LWP 1830)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#13 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7fc4357fa700 (LWP 1829)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7fc435ffb700 (LWP 1828)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#11 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fc4367fc700 (LWP 1827)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#13 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fc436ffd700 (LWP 1826)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#11 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fc4377fe700 (LWP 1825)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fc437fff700 (LWP 1824)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fc444bc6700 (LWP 1823)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fc44d781700 (LWP 1822)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fc44df82700 (LWP 1821)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc526bac02c in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/libQt5Core.so.5
#2  0x00007fc47027f42f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fc470284479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fc4702844d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007fc47027e924 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007fc470281c83 in ThreadWeaver::Thread::run() () at
/usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#21 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#22 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fc45cddd700 (LWP 1804)):
#0  0x00007fc5264a43d8 in read () at /usr/lib/libc.so.6
#1  0x00007fc520d857d1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc520d3fac8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc520d3ff96 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fc520d4010e in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#5  0x00007fc526df4314 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#6  0x00007fc526d963db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#7  0x00007fc526ba57ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fc45f7901ba in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#9  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fc474592700 (LWP 1690)):
#0  0x00007fc520d86b94 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fc520d3f509 in g_main_context_prepare () at
/usr/lib/libglib-2.0.so.0
#2  0x00007fc520d3ff1e in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc520d4010e in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#4  0x00007fc526df4314 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#5  0x00007fc526d963db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#6  0x00007fc526ba57ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fc52a97a50b in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fc4feb98700 (LWP 1599)):
#0  0x00007fc525d653bd in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007fc52c6d6f77 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fc52c6d6fb9 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fc50cd2a700 (LWP 1550)):
#0  0x00007fc5264a897b in poll () at /usr/lib/libc.so.6
#1  0x00007fc520d3fff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc520d4010e in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#3  0x00007fc526df4314 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#4  0x00007fc526d963db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#5  0x00007fc526ba57ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fc529dbc379 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fc50e7c1700 (LWP 1514)):
#0  0x00007fc5264a897b in poll () at /usr/lib/libc.so.6
#1  0x00007fc520d3fff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc520d4010e in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#3  0x00007fc526df4314 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#4  0x00007fc526d963db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#5  0x00007fc526ba57ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fc529dbc379 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fc50ffff700 (LWP 1453)):
#0  0x00007fc5264a43d8 in read () at /usr/lib/libc.so.6
#1  0x00007fc520d857d1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc520d3fac8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc520d3ff96 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fc520d4010e in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#5  0x00007fc526df4314 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#6  0x00007fc526d963db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#7  0x00007fc526ba57ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fc527217416 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fc51674d700 (LWP 1420)):
#0  0x00007fc5264a897b in poll () at /usr/lib/libc.so.6
#1  0x00007fc52b5cc8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fc52b5ce679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fc518ed582a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fc526baab4d in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fc525d5f08c in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fc5264b2e7f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fc52cff7800 (LWP 1392)):
[KCrash Handler]
#5  0x00007fc47ca27fb0 in  () at /usr/lib/dri/i965_dri.so
#6  0x00007fc47ca2ac5e in  () at /usr/lib/dri/i965_dri.so
#7  0x00007fc47ca2ae3e in  () at /usr/lib/dri/i965_dri.so
#8  0x00007fc47ca262e8 in  () at /usr/lib/dri/i965_dri.so
#9  0x00007fc47c736f64 in  () at /usr/lib/dri/i965_dri.so
#10 0x00007fc47ca039ec in  () at /usr/lib/dri/i965_dri.so
#11 0x00007fc47ca040f1 in  () at /usr/lib/dri/i965_dri.so
#12 0x00007fc47c9ff9ae in  () at /usr/lib/dri/i965_dri.so
#13 0x00007fc476a1a773 in  () at
/usr/lib/qt/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so
#14 0x00007fc526dc87ef in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib/libQt5Core.so.5
#15 0x00007fc52aa53033 in QQuickWindowPrivate::renderSceneGraph(QSize const&)
() at /usr/lib/libQt5Quick.so.5
#16 0x00007fc52a9df9c8 in  () at /usr/lib/libQt5Quick.so.5
#17 0x00007fc52aa5dec6 in QQuickWindow::event(QEvent*) () at
/usr/lib/libQt5Quick.so.5
#18 0x000056396b6164f2 in  ()
#19 0x00007fc527d9ffec in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#20 0x00007fc527da79c6 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#21 0x00007fc526d97da0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#22 0x00007fc5275a1623 in QWindowPrivate::deliverUpdateRequest() () at
/usr/lib/libQt5Gui.so.5
#23 0x00007fc5275a1b5b in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#24 0x00007fc52aa5de66 in QQuickWindow::event(QEvent*) () at
/usr/lib/libQt5Quick.so.5
#25 0x000056396b6164f2 in  ()
#26 0x00007fc527d9ffec in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#27 0x00007fc527da79c6 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#28 0x00007fc526d97da0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#29 0x00007fc526df3738 in QTimerInfoList::activateTimers() () at
/usr/lib/libQt5Core.so.5
#30 0x00007fc526df3f6a in  () at /usr/lib/libQt5Core.so.5
#31 0x00007fc520d3fe38 in g_main_context_dispatch () at
/usr/lib/libglib-2.0.so.0
#32 0x00007fc520d40081 in  () at /usr/lib/libglib-2.0.so.0
#33 0x00007fc520d4010e in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#34 0x00007fc526df42f1 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#35 0x00007fc518f5d482 in  () at /usr/lib/libQt5XcbQpa.so.5
#36 0x00007fc526d963db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#37 0x00007fc526d9f7d8 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#38 0x000056396b606743 in  ()
#39 0x00007fc5263ddf4a in __libc_start_main () at /usr/lib/libc.so.6
#40 0x000056396b606afa in _start ()

Reported using DrKonqi

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