Bug 417380

Summary: Plasma crashes when connecting screen on wayland
Product: [Plasma] KScreen Reporter: Felix Bachstein <kampfkartoffel>
Component: libkscreenAssignee: kscreen-bugs-null <kscreen-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: dvratil, kde, plasma-bugs-null
Priority: NOR Keywords: drkonqi, wayland-only
Version First Reported In: 5.17.5   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Felix Bachstein 2020-02-10 12:53:15 UTC 
Application: plasmashell (5.17.5)

Qt Version: 5.14.1
Frameworks Version: 5.67.0
Operating System: Linux 5.5.2-arch1-1 x86_64
Distribution: EndeavourOS

-- Information about the crash:
My Setup:
- my laptop
- my secondary screen(UHD) connected over an AV-Receiver as HDMI-HDMI-HDMI

- What I was doing when the application crashed:
- start laptop
- start Receiver
- screen is on
- start session (wayland)
--> the screen stays in standby (on but does not recognize input), but the output is recognized by the laptop
- manually set source on screen
--> screen recognizes laptop, laptop layout bugs around a bit (actually recognizes screen I guess)
--> plasmashell, kde5 and system settings crash

--> also happens when I change my refresh rate on the monitor

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 0x7fb0f920e840 (LWP 4628))]

Thread 33 (Thread 0x7fb07480c700 (LWP 4866)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 32 (Thread 0x7fb07580e700 (LWP 4712)):
#0  0x00007fb0fd5179ef in poll () at /usr/lib/libc.so.6
#1  0x00007fb0fbdb8120 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 31 (Thread 0x7fb07600f700 (LWP 4709)):
#0  0x00007fb0fd5179ef in poll () at /usr/lib/libc.so.6
#1  0x00007fb0fbdb8120 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 30 (Thread 0x7fb077011700 (LWP 4706)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 29 (Thread 0x7fb06e7fc700 (LWP 4703)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0fd8a5cb4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb0fd8a5d92 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fb0ff60256b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fb0ff6027fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 28 (Thread 0x7fb06effd700 (LWP 4702)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 27 (Thread 0x7fb0808f2700 (LWP 4701)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 26 (Thread 0x7fb0818a1700 (LWP 4698)):
#0  0x00007fb0fbd68479 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb0fbdb7898 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb0fbdb8046 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 25 (Thread 0x7fb082112700 (LWP 4697)):
#0  0x00007fb0fd52352c in recv () at /usr/lib/libc.so.6
#1  0x00007fb0fcf221d7 in  () at /usr/lib/libQt5Network.so.5
#2  0x00007fb0fcf13054 in  () at /usr/lib/libQt5Network.so.5
#3  0x00007fb0fcf13893 in QNetworkInterface::allInterfaces() () at /usr/lib/libQt5Network.so.5
#4  0x00007fb08190652c in  () at /usr/lib/qt/plugins/bearer/libqgenericbearer.so
#5  0x00007fb0fda89f96 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fda8bc24 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fcefd38f in QNetworkConfigurationManagerPrivate::pollEngines() () at /usr/lib/libQt5Network.so.5
#8  0x00007fb0fcf95f7a in  () at /usr/lib/libQt5Network.so.5
#9  0x00007fb0fdab14a0 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fb0fdab51d8 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007fb0fdaa9185 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#12 0x00007fb0fda7b986 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007fb0fdad33bd in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#14 0x00007fb0fdad3c52 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fb0fbdb639e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#16 0x00007fb0fbdb81b1 in  () at /usr/lib/libglib-2.0.so.0
#17 0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#18 0x00007fb0fdad4020 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#20 0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#21 0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#22 0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#23 0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 24 (Thread 0x7fb083204700 (LWP 4696)):
#0  0x00007fb0fd51342c in read () at /usr/lib/libc.so.6
#1  0x00007fb0fbd689f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb0fbdb69e1 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb0fbdb80c8 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 23 (Thread 0x7fb096413700 (LWP 4692)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7fb097bff700 (LWP 4688)):
#0  0x00007fb0fd5179ef in poll () at /usr/lib/libc.so.6
#1  0x00007fb0fbdb8120 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0ff53ceab in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 21 (Thread 0x7fb0aca57700 (LWP 4687)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0fd8a5cb4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb0fd8a5d92 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fb0ff60256b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fb0ff6027fb in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7fb0ad259700 (LWP 4686)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7fb0ada5b700 (LWP 4685)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7fb0af7fe700 (LWP 4684)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7fb0affff700 (LWP 4683)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7fb0ccff9700 (LWP 4682)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fb0cd7fa700 (LWP 4681)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fb0cdffb700 (LWP 4680)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fb0ce7fc700 (LWP 4679)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fb0ceffd700 (LWP 4678)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fb0cf7fe700 (LWP 4677)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fb0cffff700 (LWP 4676)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fb0e49b5700 (LWP 4675)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fb0e51b6700 (LWP 4674)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fb0e59b7700 (LWP 4673)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fb0e61b8700 (LWP 4672)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fb0e69b9700 (LWP 4671)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fb0e71ba700 (LWP 4670)):
#0  0x00007fb0fcce0c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb0f1223dfc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007fb0f12239f8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fb0f35ef700 (LWP 4666)):
#0  0x00007fb0fdad2789 in QTimerInfoList::repairTimersIfNeeded() () at /usr/lib/libQt5Core.so.5
#1  0x00007fb0fdad27e5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb0fdad3d7f in  () at /usr/lib/libQt5Core.so.5
#3  0x00007fb0fbdb7a00 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb0fbdb8046 in  () at /usr/lib/libglib-2.0.so.0
#5  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#6  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#8  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#9  0x00007fb0ff298f89 in  () at /usr/lib/libQt5Qml.so.5
#10 0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fb0f88b7700 (LWP 4658)):
#0  0x00007fb0fd51342c in read () at /usr/lib/libc.so.6
#1  0x00007fb0fbd689f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb0fbdb69e1 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb0fbdb80c8 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fb0fdad403c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fb0fd89ee52 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fb0fe42ab28 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fb0fd89ffc6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fb0fccda4cf in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fb0fd5222d3 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fb0f920e840 (LWP 4628)):
[KCrash Handler]
#6  0x00007fb0ffc51224 in KWayland::Client::OutputDevice::enabled() const () at /usr/lib/libKF5WaylandClient.so.5
#7  0x00007fb083216d28 in  () at /usr/lib/qt/plugins/kf5/kscreen/KSC_KWayland.so
#8  0x00007fb083218fc9 in  () at /usr/lib/qt/plugins/kf5/kscreen/KSC_KWayland.so
#9  0x00007fb083211eff in  () at /usr/lib/qt/plugins/kf5/kscreen/KSC_KWayland.so
#10 0x00007fb08320e9c4 in  () at /usr/lib/qt/plugins/kf5/kscreen/KSC_KWayland.so
#11 0x00007fb0fdab146e in  () at /usr/lib/libQt5Core.so.5
#12 0x00007fb08321026b in  () at /usr/lib/qt/plugins/kf5/kscreen/KSC_KWayland.so
#13 0x00007fb0fdab146e in  () at /usr/lib/libQt5Core.so.5
#14 0x00007fb0fdab146e in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fb0fdab146e in  () at /usr/lib/libQt5Core.so.5
#16 0x00007fb0ffc3d2d2 in KWayland::Client::Registry::interfaceRemoved(unsigned int) () at /usr/lib/libKF5WaylandClient.so.5
#17 0x00007fb0fbd4569a in ffi_call_unix64 () at /usr/lib/libffi.so.6
#18 0x00007fb0fbd44fb6 in ffi_call () at /usr/lib/libffi.so.6
#19 0x00007fb0fd364f8f in  () at /usr/lib/libwayland-client.so.0
#20 0x00007fb0fd3616ba in  () at /usr/lib/libwayland-client.so.0
#21 0x00007fb0fd362bfc in wl_display_dispatch_queue_pending () at /usr/lib/libwayland-client.so.0
#22 0x00007fb0ffc4b35f in KWayland::Client::EventQueue::dispatch() () at /usr/lib/libKF5WaylandClient.so.5
#23 0x00007fb0fdaa926a in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#24 0x00007fb0fe69a362 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#25 0x00007fb0fe6a3819 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007fb0fda7b962 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#27 0x00007fb0fda7e1c6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#28 0x00007fb0fdad49d4 in  () at /usr/lib/libQt5Core.so.5
#29 0x00007fb0fbdb639e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#30 0x00007fb0fbdb81b1 in  () at /usr/lib/libglib-2.0.so.0
#31 0x00007fb0fbdb81f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#32 0x00007fb0fdad4020 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#33 0x00007fb0fda7a4cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#34 0x00007fb0fda824d6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#35 0x000055fc1f8d7dc9 in  ()
#36 0x00007fb0fd44a153 in __libc_start_main () at /usr/lib/libc.so.6
#37 0x000055fc1f8d822e in _start ()
[Inferior 1 (process 4628) detached]

The reporter indicates this bug may be a duplicate of or related to bug 416347.

Possible duplicates by query: bug 417372, bug 417367, bug 417341, bug 417329, bug 417285.

Reported using DrKonqi
Comment 1 David Edmundson 2020-02-10 14:08:57 UTC 
If you can reproduce please install debug symbols for KSC_KWayland.so
Comment 2 Daniel Vrátil 2020-02-21 08:43:47 UTC 

*** This bug has been marked as a duplicate of bug 413892 ***