Bug 419420

Summary: Plasma crashes anytime.
Product: [Plasma] plasmashell Reporter: chenlinux945
Component: generic-crashAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: crash CC: plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.18.3   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description chenlinux945 2020-03-30 15:17:44 UTC 
Application: plasmashell (5.18.3)

Qt Version: 5.14.1
Frameworks Version: 5.68.0
Operating System: Linux 5.4.28-1-lts x86_64
Windowing system: X11
Distribution: "Arch Linux"

-- Information about the crash:
- Unusual behavior I noticed:
It happens that Plasma logs me out, by surprise, without any reason. That's why I can't be more precise. It can be annoying when I'm making important something. This bugs exists on my computer since KDE Plasma 5.18.3 was installed.

- Custom settings of the application:

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc25e39b840 (LWP 1622))]

Thread 20 (Thread 0x7fc212516700 (LWP 2650)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc26475c56b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fc26475c7fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7fc203eeb700 (LWP 2041)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc26475c56b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fc26475c7fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7fc1da7fc700 (LWP 1861)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7fc1daffd700 (LWP 1860)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#21 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#22 0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#23 0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#24 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#25 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7fc1db7fe700 (LWP 1859)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fc1dbfff700 (LWP 1858)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fc200883700 (LWP 1857)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#21 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#22 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#23 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#24 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#25 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#26 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#27 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#28 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#29 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#30 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#31 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#32 0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#33 0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#34 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#35 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fc201084700 (LWP 1856)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#19 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fc201885700 (LWP 1855)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fc21ecb6d71 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#14 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#15 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fc202086700 (LWP 1854)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc21ecb3289 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fc21ecb6d1b in  () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fc21ecb247e in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fc21ecb4e5c in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fc2036da700 (LWP 1849)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc26475c56b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fc26475c7fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fc213557700 (LWP 1832)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc26475c56b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fc26475c7fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fc211ad6700 (LWP 1826)):
#0  0x00007fc260ebd4e0 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fc260f0e072 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc260f0e6c6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc260f0e871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fc262c2d0ec in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fc262bd357c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fc2629f7e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fc2348dc16b in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#8  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fc2288ff700 (LWP 1821)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc26475c56b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fc26475c7fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fc2354ab700 (LWP 1819)):
#0  0x00007fc261e3ecf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc2629fecc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc2629feda2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc26475c56b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fc26475c7fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fc2364e3700 (LWP 1814)):
#0  0x00007fc262674abf in poll () at /usr/lib/libc.so.6
#1  0x00007fc260f0e7a0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc260f0e871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc262c2d0ec in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc262bd357c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fc2629f7e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fc264696eab in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fc244d3f700 (LWP 1809)):
#0  0x00007fc262674abf in poll () at /usr/lib/libc.so.6
#1  0x00007fc260f0e7a0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc260f0e871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc262c2d0ec in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc262bd357c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fc2629f7e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fc2575ef700 (LWP 1804)):
#0  0x00007fc2626704fc in read () at /usr/lib/libc.so.6
#1  0x00007fc260ebd8c0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc260f0d001 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc260f0e748 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fc260f0e871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fc262c2d0ec in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fc262bd357c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fc2629f7e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fc2643f4f89 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fc25c97c700 (LWP 1650)):
#0  0x00007fc2626704fc in read () at /usr/lib/libc.so.6
#1  0x00007fc260ebd8c0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fc260f0d001 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fc260f0e748 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fc260f0e871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fc262c2d0ec in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fc262bd357c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fc2629f7e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fc263ccfb28 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fc2629f8fd6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fc261e3846f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fc26267f3d3 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fc25e39b840 (LWP 1622)):
[KCrash Handler]
#5  0x00007fc264541cf0 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fc264b188b6 in Plasma::DataEngineConsumer::~DataEngineConsumer() () at /usr/lib/libKF5Plasma.so.5
#7  0x00007fc244da2f4b in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_weather.so
#8  0x00007fc244da2f79 in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_weather.so
#9  0x00007fc264b2aea2 in  () at /usr/lib/libKF5Plasma.so.5
#10 0x00007fc264b2b039 in  () at /usr/lib/libKF5Plasma.so.5
#11 0x00007fc2625be537 in __run_exit_handlers () at /usr/lib/libc.so.6
#12 0x00007fc2625be6ee in  () at /usr/lib/libc.so.6
#13 0x00007fc264c053f2 in _XDefaultIOError () at /usr/lib/libX11.so.6
#14 0x00007fc25df810fc in  () at /usr/lib/libQt5XcbQpa.so.5
#15 0x00007fc264c0569e in _XIOError () at /usr/lib/libX11.so.6
#16 0x00007fc264c0284a in  () at /usr/lib/libX11.so.6
#17 0x00007fc264c03055 in _XFlush () at /usr/lib/libX11.so.6
#18 0x00007fc264c05d06 in _XGetRequest () at /usr/lib/libX11.so.6
#19 0x00007fc264be216e in XCreatePixmap () at /usr/lib/libX11.so.6
#20 0x0000563f60aba9f4 in  ()
#21 0x0000563f60abd433 in  ()
#22 0x0000563f60abd6c8 in  ()
#23 0x0000563f60abd729 in  ()
#24 0x00007fc2625be537 in __run_exit_handlers () at /usr/lib/libc.so.6
#25 0x00007fc2625be6ee in  () at /usr/lib/libc.so.6
#26 0x00007fc264c053f2 in _XDefaultIOError () at /usr/lib/libX11.so.6
#27 0x00007fc25df810fc in  () at /usr/lib/libQt5XcbQpa.so.5
#28 0x00007fc264c0569e in _XIOError () at /usr/lib/libX11.so.6
#29 0x00007fc264c0284a in  () at /usr/lib/libX11.so.6
#30 0x00007fc264c03055 in _XFlush () at /usr/lib/libX11.so.6
#31 0x00007fc264c05d06 in _XGetRequest () at /usr/lib/libX11.so.6
#32 0x00007fc264be216e in XCreatePixmap () at /usr/lib/libX11.so.6
#33 0x00007fc26500cf94 in  () at /usr/lib/libKF5PlasmaQuick.so.5
#34 0x00007fc26500f9d3 in  () at /usr/lib/libKF5PlasmaQuick.so.5
#35 0x00007fc26500fc68 in  () at /usr/lib/libKF5PlasmaQuick.so.5
#36 0x00007fc26500fcc9 in  () at /usr/lib/libKF5PlasmaQuick.so.5
#37 0x00007fc2625be537 in __run_exit_handlers () at /usr/lib/libc.so.6
#38 0x00007fc2625be6ee in  () at /usr/lib/libc.so.6
#39 0x00007fc25df4e281 in  () at /usr/lib/libQt5XcbQpa.so.5
#40 0x00007fc25df80bc4 in  () at /usr/lib/libQt5XcbQpa.so.5
#41 0x00007fc260f0c9be in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#42 0x00007fc260f0e831 in  () at /usr/lib/libglib-2.0.so.0
#43 0x00007fc260f0e871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#44 0x00007fc262c2d0d0 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#45 0x00007fc262bd357c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#46 0x00007fc262bdb586 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#47 0x0000563f60a9b018 in  ()
#48 0x00007fc2625a7023 in __libc_start_main () at /usr/lib/libc.so.6
#49 0x0000563f60a9b23e in _start ()
[Inferior 1 (process 1622) detached]

Possible duplicates by query: bug 410166, bug 406138, bug 402676, bug 399514, bug 398894.

Reported using DrKonqi
Comment 1 chenlinux945 2020-04-07 09:10:25 UTC 
Maybe this bug is thes same as mine : 
https://bugs.kde.org/show_bug.cgi?id=418767#c0
Comment 2 David Edmundson 2020-04-07 09:18:31 UTC 
Trace is completely different

QtXCB is hitting a fatal assertion for some reason.
#37 0x00007fc2625be537 in __run_exit_handlers () at /usr/lib/libc.so.6
#40 0x00007fc25df80bc4 in  () at /usr/lib/libQt5XcbQpa.so.5

Then we happen to crash when we're doing an unexpected teardown, but the real important thing is the unexpected teardown.

Is your X setup unusual in any way?
Comment 3 chenlinux945 2020-04-07 09:25:09 UTC 
I'm using a DisplayLink screen : https://www.asus.com/us/Monitors/MB16AC/

I don't know if it's a particular setup, but it needs many configurations.
Comment 4 chenlinux945 2020-04-07 09:31:43 UTC 
The ASUS screen is a second monitor, not the main one.
Comment 5 David Edmundson 2020-04-07 09:33:06 UTC 
debug symbols for 

 /usr/lib/libQt5XcbQpa.so.5

will help
Comment 6 Bug Janitor Service 2020-04-22 04:33:10 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 7 chenlinux945 2020-05-05 13:58:55 UTC 
The bug doesn't appears any more (or rarely) so I'm marking it as REPORTED.
Comment 8 Christoph Feck 2020-05-14 02:17:51 UTC 
There aren't many places in Qt's xcb platform plugin that call exit(), so it is possible to investigate without debug symbols, see https://code.qt.io/cgit/qt/qtbase.git/tree/src/plugins/platforms/xcb/qxcbconnection.cpp#n982

I suggest to report this issue directly to Qt developers via https://bugreports.qt.io/