Bug 449450

Summary: plasmashell crashes right after launch (segmentation fault)
Product: [Plasma] plasmashell Reporter: altosch <ales>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: ales, nate, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.23.5   
Target Milestone: 1.0   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description altosch 2022-02-01 09:35:59 UTC 
Application: plasmashell (5.23.5)

Qt Version: 5.15.3
Frameworks Version: 5.90.0
Operating System: Linux 5.13.0-28-generic x86_64
Windowing System: Wayland
Distribution: KDE neon User - Plasma 25th Anniversary Edition
DrKonqi: 5.23.5 [KCrashBackend]

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

Just log in.

There is just blank screen with wallpaper and  nothing more. I can however run programs through ALT+F2 and it is possible to switch between them by ALT+TAB.

If I try to restart plasma like this:
ALT+F2 > killall plasmashell
ALT+F2 > kstart5 plasmashell
It won't help. It crashes immediately again and again.

It all started after some update by Discover. 

/var/log/apt/history.log says:

Start-Date: 2022-02-01  09:15:01
Commandline: packagekit role='update-packages'
Requested-By: user (1000)
Install: linux-modules-5.4.0-97-generic:amd64 (5.4.0-97.110), linux-headers-5.13.0-28-generic:amd64 (5.13.0-28.31~20.04.1), linux-modules-extra-5.13.0-28-generic:amd64 (5.13.0-28.31~20.04.1), linux-modules-5.13.0-28-generic:amd64 (5.13.0-28.31~20.04.1), linux-image-5.4.0-97-generic:amd64 (5.4.0-97.110), linux-modules-extra-5.4.0-97-generic:amd64 (5.4.0-97.110), linux-image-5.13.0-28-generic:amd64 (5.13.0-28.31~20.04.1), linux-hwe-5.13-headers-5.13.0-28:amd64 (5.13.0-28.31~20.04.1)
Upgrade: libkf5texteditor5:amd64 (5.90.0-0xneon+20.04+focal+release+build43, 5.90.0-0xneon+20.04+focal+release+build44), linux-headers-generic-hwe-20.04:amd64 (5.13.0.27.29~20.04.13, 5.13.0.28.31~20.04.15), libgusb2:amd64 (0.3.7-0xneon+20.04+focal+release+build4, 0.3.10-0xneon+20.04+focal+release+build6), kate5-data:amd64 (4:21.12.1-0xneon+20.04+focal+release+build62, 4:21.12.1-0xneon+20.04+focal+release+build63), libqt5test5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), ktexteditor-katepart:amd64 (5.90.0-0xneon+20.04+focal+release+build43, 5.90.0-0xneon+20.04+focal+release+build44), qt5-gtk-platformtheme:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), appstream:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), kate:amd64 (4:21.12.1-0xneon+20.04+focal+release+build62, 4:21.12.1-0xneon+20.04+focal+release+build63), linux-image-generic:amd64 (5.4.0.96.100, 5.4.0.97.101), libappimage1.0:amd64 (1.0.3-1xneon+20.04+focal+release+build15, 1.0.4-0xneon+20.04+focal+release+build17), qtwayland5:amd64 (5.15.2+p20.04+tunstable+git20220120.0249-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), libmalcontent-0-0:amd64 (0.10.2-0xneon+20.04+focal+release+build5, 0.10.3-1+20.04+focal+release+build6), apt-config-icons-large:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), libqt5dbus5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), libqt5quicktemplates2-5:amd64 (5.15.2+p20.04+tunstable+git20220121.0117-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), libqt5sql5-sqlite:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), libqt5waylandcompositor5:amd64 (5.15.2+p20.04+tunstable+git20220120.0249-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), libqt5widgets5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), libqt5waylandclient5:amd64 (5.15.2+p20.04+tunstable+git20220120.0249-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), apt-config-icons-large-hidpi:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), qml-module-qtquick-controls2:amd64 (5.15.2+p20.04+tunstable+git20220121.0117-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), linux-image-generic-hwe-20.04:amd64 (5.13.0.27.29~20.04.13, 5.13.0.28.31~20.04.15), libqt5quickcontrols2-5:amd64 (5.15.2+p20.04+tunstable+git20220121.0117-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), libqt5xml5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), ktexteditor-data:amd64 (5.90.0-0xneon+20.04+focal+release+build43, 5.90.0-0xneon+20.04+focal+release+build44), libqt5printsupport5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), linux-generic-hwe-20.04:amd64 (5.13.0.27.29~20.04.13, 5.13.0.28.31~20.04.15), kwrite:amd64 (4:21.12.1-0xneon+20.04+focal+release+build62, 4:21.12.1-0xneon+20.04+focal+release+build63), libqt5concurrent5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), libinput-bin:amd64 (1.19.1-1+20.04+focal+release+build3, 1.19.3-1+20.04+focal+release+build4), libqt5gui5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), libappstreamqt2:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), libqt5core5a:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), qml-module-qtquick-templates2:amd64 (5.15.2+p20.04+tunstable+git20220121.0117-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), apt-config-icons-hidpi:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), libappstream4:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), libkf5texteditor-bin:amd64 (5.90.0-0xneon+20.04+focal+release+build43, 5.90.0-0xneon+20.04+focal+release+build44), libqt5network5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), apt-config-icons:amd64 (0.15.0-1+20.04+focal+release+build6, 0.15.1-1+20.04+focal+release+build8), qml-module-qt-labs-platform:amd64 (5.15.2+p20.04+tunstable+git20220121.0117-0, 5.15.2+p20.04+tunstable+git20220128.1547-0), libqt5sql5:amd64 (5.15.2+p20.04+tunstable+git20220120.0218-0, 5.15.2+p20.04+tunstable+git20220131.0110-0), libinput10:amd64 (1.19.1-1+20.04+focal+release+build3, 1.19.3-1+20.04+focal+release+build4)
End-Date: 2022-02-01  09:16:53

Start-Date: 2022-02-01  10:15:01
Commandline: packagekit role='install-packages'
Requested-By: user (1000)
Install: ubuntu-dbgsym-keyring:amd64 (2020.02.11.4, automatic), neon-repositories-ubuntu-ddebs:amd64 (0.1+p20.04+trelease+git20211224.0043)
End-Date: 2022-02-01  10:15:16

Start-Date: 2022-02-01  10:17:00
Commandline: packagekit role='install-packages'
Requested-By: user(1000)
Install: libqt5network5-dbgsym:amd64 (5.15.2+p20.04+tunstable+git20220131.0110-0), libqt5core5a-dbgsym:amd64 (5.15.2+p20.04+tunstable+git20220131.0110-0), libkuserfeedbackcore1-dbgsym:amd64 (1.0.0-0+20.04+focal+build2), plasma-workspace-dbg:amd64 (4:5.23.5-0xneon+20.04+focal+release+build50), libqt5widgets5-dbgsym:amd64 (5.15.2+p20.04+tunstable+git20220131.0110-0)
End-Date: 2022-02-01  10:17:11

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[New LWP 4710]
[New LWP 4711]
[New LWP 4712]
[New LWP 4713]
[New LWP 4714]
[New LWP 4715]
[New LWP 4716]
[New LWP 4717]
[New LWP 4718]
[New LWP 4719]
[New LWP 4720]
[New LWP 4721]
[New LWP 4722]
[New LWP 4723]
[New LWP 4724]
[New LWP 4727]
[New LWP 4731]
[New LWP 4732]
[New LWP 4737]
[New LWP 4738]
[New LWP 4739]
[New LWP 4740]
[New LWP 4752]
[New LWP 4755]
[New LWP 4756]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fa9d2a1eaff in __GI___poll (fds=0x7ffe35d13078, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
[Current thread is 1 (Thread 0x7fa9ceb5e9c0 (LWP 4708))]

Thread 26 (Thread 0x7fa937085700 (LWP 4756)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb2300540) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb23004f0, cond=0x55cfb2300518) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb2300518, mutex=0x55cfb23004f0) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7fa92ffff700 (LWP 4755)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb2234750) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb2234700, cond=0x55cfb2234728) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb2234728, mutex=0x55cfb2234700) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7fa935b8d700 (LWP 4752)):
#0  0x00007ffe35d72aed in clock_gettime ()
#1  0x00007fa9d29e9235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fa935b8c980) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007fa9d2fee2d5 in qt_clock_gettime (ts=0x7fa935b8c980, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007fa9d2fecb6d in QTimerInfoList::updateCurrentTime (this=0x7fa930004520) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007fa9d2fef185 in timerSourceCheckHelper (src=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:570
#7  timerSourceCheck (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:174
#8  0x00007fa9d12b4da1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fa9d12b5312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa9d2feea0b in QEventDispatcherGlib::processEvents (this=0x7fa930000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7fa935b8cba0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#13 0x00007fa9d2dac362 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#14 0x00007fa935c6d07c in KCupsConnection::run() () from /lib/x86_64-linux-gnu/libkcupslib.so
#15 0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb1e7abf0) at thread/qthread_unix.cpp:331
#16 0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#17 0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7fa96cc10700 (LWP 4740)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fa97802aba4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7fa97802ab50, cond=0x7fa97802ab78) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7fa97802ab78, mutex=0x7fa97802ab50) at pthread_cond_wait.c:638
#3  0x00007fa9d2db36db in QWaitConditionPrivate::wait (deadline=..., this=0x7fa97802ab50) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x7fa9c000edd0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007fa9d4a1fc24 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fa9d4a20099 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x7fa9c000ed30) at thread/qthread_unix.cpp:331
#8  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7fa96d811700 (LWP 4739)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb1529c70) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb1529c20, cond=0x55cfb1529c48) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb1529c48, mutex=0x55cfb1529c20) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fa96e012700 (LWP 4738)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb145e634) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb145e5e0, cond=0x55cfb145e608) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb145e608, mutex=0x55cfb145e5e0) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fa96effd700 (LWP 4737)):
#0  0x00007ffe35d72aed in clock_gettime ()
#1  0x00007fa9d29e9235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fa96effc910) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007fa9d2fee2d5 in qt_clock_gettime (ts=0x7fa96effc910, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007fa9d2fecb6d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa960004b20) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007fa9d2fed149 in QTimerInfoList::timerWait (this=0x7fa960004b20, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007fa9d2fee766 in timerSourcePrepareHelper (timeout=0x7fa96effc9d4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fa96effc9d4) at kernel/qeventdispatcher_glib.cpp:166
#9  0x00007fa9d12b48ef in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa9d12b529b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa9d2feea0b in QEventDispatcherGlib::processEvents (this=0x7fa960000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7fa96effcba0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007fa9d2dac362 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007fa9d495a3fa in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb13ddce0) at thread/qthread_unix.cpp:331
#17 0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#18 0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fa96ffff700 (LWP 4732)):
#0  0x00007ffe35d72aed in clock_gettime ()
#1  0x00007fa9d29e9235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fa96fffe960) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007fa9d2fee2d5 in qt_clock_gettime (ts=0x7fa96fffe960, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007fa9d2fecb6d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa964004920) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007fa9d2fed149 in QTimerInfoList::timerWait (this=0x7fa964004920, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007fa9d2feedcc in timerSourcePrepareHelper (timeout=0x7fa96fffea14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:138
#8  idleTimerSourcePrepare (source=<optimized out>, timeout=0x7fa96fffea14) at kernel/qeventdispatcher_glib.cpp:213
#9  0x00007fa9d12b48ef in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa9d12b529b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa9d2feea0b in QEventDispatcherGlib::processEvents (this=0x7fa964000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7fa96fffebe0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007fa9d2dac362 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb1320800) at thread/qthread_unix.cpp:331
#16 0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#17 0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fa974f6e700 (LWP 4731)):
#0  0x00007fa9d2a1eaff in __GI___poll (fds=0x7fa968005240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa9d12b536e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa9d2feea0b in QEventDispatcherGlib::processEvents (this=0x7fa968000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7fa974f6dbe0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fa9d2dac362 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb10e7120) at thread/qthread_unix.cpp:331
#7  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fa9ad3fa700 (LWP 4727)):
#0  __GI___libc_read (nbytes=16, buf=0x7fa9ad3f99b0, fd=18) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=18, buf=0x7fa9ad3f99b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fa9d12fdb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa9d12b4ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa9d12b5312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa9d2feea0b in QEventDispatcherGlib::processEvents (this=0x7fa97c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7fa9ad3f9bc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007fa9d2dac362 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007fa9d45c0559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb083a000) at thread/qthread_unix.cpp:331
#11 0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fa9ae7fc700 (LWP 4724)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05daca0) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05dac50, cond=0x55cfb05dac78) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05dac78, mutex=0x55cfb05dac50) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fa9aeffd700 (LWP 4723)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05daca0) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05dac50, cond=0x55cfb05dac78) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05dac78, mutex=0x55cfb05dac50) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fa9af7fe700 (LWP 4722)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05daca4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05dac50, cond=0x55cfb05dac78) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05dac78, mutex=0x55cfb05dac50) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fa9affff700 (LWP 4721)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05da59c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05da548, cond=0x55cfb05da570) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05da570, mutex=0x55cfb05da548) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fa9b4d1f700 (LWP 4720)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05da598) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05da548, cond=0x55cfb05da570) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05da570, mutex=0x55cfb05da548) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fa9b5520700 (LWP 4719)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05da59c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05da548, cond=0x55cfb05da570) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05da570, mutex=0x55cfb05da548) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fa9b5d21700 (LWP 4718)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05da598) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05da548, cond=0x55cfb05da570) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05da570, mutex=0x55cfb05da548) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fa9b6522700 (LWP 4717)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05db208) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05db1b8, cond=0x55cfb05db1e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05db1e0, mutex=0x55cfb05db1b8) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fa9b6d23700 (LWP 4716)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05db208) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05db1b8, cond=0x55cfb05db1e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05db1e0, mutex=0x55cfb05db1b8) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fa9b7524700 (LWP 4715)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05db208) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05db1b8, cond=0x55cfb05db1e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05db1e0, mutex=0x55cfb05db1b8) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fa9b7d25700 (LWP 4714)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05db208) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05db1b8, cond=0x55cfb05db1e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05db1e0, mutex=0x55cfb05db1b8) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fa9b8526700 (LWP 4713)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb05d73bc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb05d7368, cond=0x55cfb05d7390) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb05d7390, mutex=0x55cfb05d7368) at pthread_cond_wait.c:638
#3  0x00007fa9bde24e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fa9bde24a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fa9cd031700 (LWP 4712)):
#0  0x00007ffe35d72aed in clock_gettime ()
#1  0x00007fa9d29e9235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fa9cd030920) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007fa9d2fee2d5 in qt_clock_gettime (ts=0x7fa9cd030920, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007fa9d2fecb6d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa9c0004d50) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007fa9d2fed149 in QTimerInfoList::timerWait (this=0x7fa9c0004d50, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007fa9d2fee766 in timerSourcePrepareHelper (timeout=0x7fa9cd0309e4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fa9cd0309e4) at kernel/qeventdispatcher_glib.cpp:166
#9  0x00007fa9d12b48ef in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa9d12b529b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa9d2feea0b in QEventDispatcherGlib::processEvents (this=0x7fa9c0000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7fa9cd030bb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007fa9d2dac362 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007fa9d3921f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#16 0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x7fa9d39a5d80) at thread/qthread_unix.cpp:331
#17 0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#18 0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fa9cd832700 (LWP 4711)):
#0  0x00007fa9d2a1eaff in __GI___poll (fds=0x7fa9cd831be0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa9d0e0ba16 in ?? () from /lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#2  0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb04ea220) at thread/qthread_unix.cpp:331
#3  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#4  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fa9ce033700 (LWP 4710)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfb04d0220) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cfb04d01d0, cond=0x55cfb04d01f8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cfb04d01f8, mutex=0x55cfb04d01d0) at pthread_cond_wait.c:638
#3  0x00007fa9d2db36db in QWaitConditionPrivate::wait (deadline=..., this=0x55cfb04d01d0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x55cfb04e6378, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007fa9d0e0b9bd in ?? () from /lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#6  0x00007fa9d2dad543 in QThreadPrivate::start (arg=0x55cfb04e6340) at thread/qthread_unix.cpp:331
#7  0x00007fa9d1ce6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fa9d2a2b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fa9ceb5e9c0 (LWP 4708)):
[KCrash Handler]
#4  0x00007fa9d517a665 in QOpenGLFunctions::glGetString (this=0x7ffe35d13ce8, name=7936) at /usr/include/x86_64-linux-gnu/qt5/QtGui/qopenglfunctions.h:870
#5  KUserFeedback::OpenGLInfoSource::data (this=<optimized out>) at ./src/provider/core/openglinfosource.cpp:59
#6  0x00007fa9d5189f34 in KUserFeedback::ProviderPrivate::jsonData (this=this@entry=0x55cfb074ba80, mode=KUserFeedback::Provider::DetailedUsageStatistics) at ./src/provider/core/provider.cpp:232
#7  0x00007fa9d518bc7e in KUserFeedback::ProviderPrivate::submit (this=this@entry=0x55cfb074ba80, url=...) at ./src/provider/core/provider.cpp:670
#8  0x00007fa9d518beb6 in KUserFeedback::ProviderPrivate::submitProbeFinished (this=0x55cfb074ba80, reply=0x55cfb100a0e0) at ./src/provider/core/provider.cpp:701
#9  0x00007fa9d2fcb1be in QtPrivate::QSlotObjectBase::call (a=0x7ffe35d14060, r=0x55cfb06b8160, this=0x55cfb1329d70) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#10 doActivate<false> (sender=0x55cfb100a0e0, signal_index=10, argv=0x7ffe35d14060) at kernel/qobject.cpp:3886
#11 0x00007fa9d2fc4587 in QMetaObject::activate (sender=sender@entry=0x55cfb100a0e0, m=m@entry=0x7fa9d289e960 <QNetworkReply::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#12 0x00007fa9d283e6c7 in QNetworkReply::finished (this=this@entry=0x55cfb100a0e0) at .moc/moc_qnetworkreply.cpp:404
#13 0x00007fa9d278f126 in QNetworkReplyHttpImplPrivate::finished (this=0x55cfb0899390) at access/qnetworkreplyhttpimpl.cpp:2280
#14 0x00007fa9d278f3a5 in QNetworkReplyHttpImplPrivate::replyFinished (this=<optimized out>) at access/qnetworkreplyhttpimpl.cpp:1119
#15 0x00007fa9d28436ee in QNetworkReplyHttpImpl::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/../access/qnetworkreplyhttpimpl_p.h:98
#16 0x00007fa9d2fc1d39 in QObject::event (this=0x55cfb100a0e0, e=0x7fa9640125a0) at kernel/qobject.cpp:1314
#17 0x00007fa9d3ca5dc3 in QApplicationPrivate::notify_helper (this=this@entry=0x55cfb04cb2f0, receiver=receiver@entry=0x55cfb100a0e0, e=e@entry=0x7fa9640125a0) at kernel/qapplication.cpp:3632
#18 0x00007fa9d3caebb8 in QApplication::notify (this=0x7ffe35d14840, receiver=0x55cfb100a0e0, e=0x7fa9640125a0) at kernel/qapplication.cpp:3156
#19 0x00007fa9d2f9419a in QCoreApplication::notifyInternal2 (receiver=0x55cfb100a0e0, event=0x7fa9640125a0) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:332
#20 0x00007fa9d2f96aa1 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55cfb04a4ef0) at kernel/qcoreapplication.cpp:1821
#21 0x00007fa9d2fef397 in postEventSourceDispatch (s=0x55cfb04eb720) at kernel/qeventdispatcher_glib.cpp:277
#22 0x00007fa9d12b517d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fa9d12b5400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fa9d12b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fa9d2fee9f2 in QEventDispatcherGlib::processEvents (this=0x55cfb04ea130, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#26 0x00007fa9d2f92c9b in QEventLoop::exec (this=this@entry=0x7ffe35d14720, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#27 0x00007fa9d2f9ae44 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#28 0x000055cfaf162cf5 in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:238
[Inferior 1 (process 4708) detached]

Possible duplicates by query: bug 438348, bug 429720.

Reported using DrKonqi
Comment 1 altosch 2022-02-01 10:02:40 UTC 
Addition: how to FIX it: switch to X11 and back

1. log out (ALT+F2  > type logout)
2. at login screen (SDDM?) choose: Desktop Session: Plasma (X11) and login
3. logout > switch back to Plasma (Wayland) > log in again > everything works

I thought it's something related to Wayland so a wanted to continue working in old X11. Then out of curiosity I tried again and the issue was gone.
Comment 2 Nate Graham 2022-02-02 17:26:16 UTC 
Are you using an NVIDIA GPU? If so, this is probably Bug 438348.
Comment 3 altosch 2022-02-04 06:46:46 UTC 
(In reply to Nate Graham from comment #2)
> Are you using an NVIDIA GPU? 

No, it's Radeon Renoir built in AMD Ryzen 5 4500U processor.
Comment 4 Nate Graham 2022-02-04 15:07:41 UTC 

*** This bug has been marked as a duplicate of bug 449505 ***