Public bug reported:

backtrace:

Application: Muon pakketbeheerder (muon), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f82f8223640 (LWP 2498))]

Thread 5 (Thread 0x7f82dfbb6700 (LWP 2513)):
#0  0x00007f82ec6e7462 in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#1  0x00007f82ec6ea46b in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#2  0x00007f82ec6ea81d in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#3  0x00007f82ec6eb0aa in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#4  0x00007f82ec74d908 in pa_mainloop_dispatch () from 
/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f82ec74dbe0 in pa_mainloop_iterate () from 
/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f82ec74dc80 in pa_mainloop_run () from 
/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f82ec75be9d in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#8  0x00007f82ec6fb59c in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#9  0x00007f82fb48f75a in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#10 0x00007f82fbdcd9f3 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f82ee8f0700 (LWP 2503)):
#0  __GI___pthread_getspecific (key=4) at pthread_getspecific.c:25
#1  0x00007f82faa70574 in g_thread_self () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f82faa46681 in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f82fc35ce1b in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f82fc30645b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f82fc149072 in QThread::exec() () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f82fc14a4e2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f82fb48f75a in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#8  0x00007f82fbdcd9f3 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f82f4ebf700 (LWP 2500)):
#0  __GI___errno_location () at errno-loc.c:26
#1  0x00007f82faa4656e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f82faa46690 in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f82fc35ce1b in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f82fc30645b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f82fc149072 in QThread::exec() () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f82fb9b6f79 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f82fc14a4e2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f82fb48f75a in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#9  0x00007f82fbdcd9f3 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f82f6f86700 (LWP 2499)):
#0  0x00007f82fbdc1031 in __GI___poll (fds=0x7f82f6f85be8, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f82fa827917 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f82fa82953a in xcb_wait_for_event () from 
/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f82f7b72d98 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f82fc14a4e2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f82fb48f75a in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#6  0x00007f82fbdcd9f3 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f82f8223640 (LWP 2498)):
[KCrash Handler]
#6  0x00007f82fd97923a in QApt::Backend::package(QLatin1String) const () from 
/lib/x86_64-linux-gnu/libQApt.so.3
#7  0x00007f82fd97bd5a in QApt::Backend::search(QString const&) const () from 
/lib/x86_64-linux-gnu/libQApt.so.3
#8  0x000055fdc61298fe in ?? ()
#9  0x000055fdc612e09a in ?? ()
#10 0x000055fdc611cd20 in ?? ()
#11 0x000055fdc611cdf5 in ?? ()
#12 0x000055fdc6148bab in ?? ()
#13 0x00007f82fc332423 in QMetaObject::activate(QObject*, int, int, void**) () 
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f82fd9ab4a5 in 
QApt::Transaction::statusChanged(QApt::TransactionStatus) () from 
/lib/x86_64-linux-gnu/libQApt.so.3
#15 0x00007f82fd99c9de in QApt::Transaction::updateProperty(int, QDBusVariant 
const&) () from /lib/x86_64-linux-gnu/libQApt.so.3
#16 0x00007f82fd9ac28f in ?? () from /lib/x86_64-linux-gnu/libQApt.so.3
#17 0x00007f82fc332423 in QMetaObject::activate(QObject*, int, int, void**) () 
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f82fd9a908c in ?? () from /lib/x86_64-linux-gnu/libQApt.so.3
#19 0x00007f82fd9aa443 in ?? () from /lib/x86_64-linux-gnu/libQApt.so.3
#20 0x00007f82fb9c2a2a in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#21 0x00007f82fc332d52 in QObject::event(QEvent*) () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f82fccef415 in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f82fccf68b0 in QApplication::notify(QObject*, QEvent*) () from 
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f82fc307929 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f82fc30aa1f in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f82fc35d817 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f82faa4635e in g_main_context_dispatch () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f82faa465f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f82faa46690 in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f82fc35cdfb in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f82fc30645b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f82fc30e726 in QCoreApplication::exec() () from 
/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x000055fdc611b1b8 in ?? ()
#34 0x00007f82fbcd2ea3 in __libc_start_main (main=0x55fdc611ad90, argc=1, 
argv=0x7ffceb666848, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffceb666838) at ../csu/libc-start.c:308
#35 0x000055fdc611b24a in _start ()
[Inferior 1 (process 2498) detached]

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: muon 4:5.8.0-1ubuntu4
ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0
Uname: Linux 5.2.0-8-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu5
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Jul 21 11:14:54 2019
ExecutablePath: /usr/bin/muon
InstallationDate: Installed on 2019-07-15 (5 days ago)
InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190531)
ProcCmdline: /usr/bin/muon
ProcEnviron:
 LANGUAGE=nl
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: muon
StacktraceTop:
 QApt::Backend::package(QLatin1String) const () from 
/lib/x86_64-linux-gnu/libQApt.so.3
 QApt::Backend::search(QString const&) const () from 
/lib/x86_64-linux-gnu/libQApt.so.3
 ?? ()
 ?? ()
 ?? ()
Title: muon crashed with SIGSEGV in QApt::Backend::package()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
separator:

** Affects: muon (Ubuntu)
     Importance: Medium
         Status: New


** Tags: amd64 apport-crash eoan

** Attachment added: "Added backtrace output..."
   
https://bugs.launchpad.net/bugs/1837310/+attachment/5278204/+files/muon-20190721-110557.kcrash.txt

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1837310

Title:
  signal: Segmentation fault Using host libthread_db library
  "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1
  (Thread 0x7f82f8223640 (LWP 2498))]

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