#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f34c8fd2b4b in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f34c965dc7b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#3 0x00007f34c961a0d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#4 0x00007f34c961a8a5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#5 0x00007f34c962671d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007f34c9626875 in QDBusInterface::QDBusInterface(QString const&, QString const&, QString const&, QDBusConnection const&, QObject*) ()
from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x00007f348291b12b in UCContentHub::UCContentHub(QObject*) ()
from /usr/lib/x86_64-linux-gnu/libUbuntuToolkit.so.5
#8 0x00007f3482936598 in ?? ()
from /usr/lib/x86_64-linux-gnu/libUbuntuToolkit.so.5
#9 0x00007f34c9e52ea1 in QQmlType::SingletonInstanceInfo::init(QQmlEngine*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f34c9eb04c5 in QV4::QmlTypeWrapper::toVariant() const ()
from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f34c9d886e6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f34c9d88844 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f34c9ea83ae in QQmlBinding::write(QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f34c9ea94e7 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f34c9eb3035 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f34c9e3d01e in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f34c9e3d0e7 in QQmlComponentPrivate::completeCreate() ()
from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f34c9e3cf50 in QQmlComponent::create(QQmlContext*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f34cb97d553 in QQuickView::continueExecute() ()
from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f34cb97db1d in QQuickViewPrivate::execute() ()
from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x0000556b357e79c5 in ?? ()
#22 0x0000556b357e65b3 in ?? ()
#23 0x0000556b357e26c7 in ?? ()
#24 0x00007f34c85df3f1 in __libc_start_main (main=0x556b357e2600, argc=2,
argv=0x7ffe95fdf8f8, init=<optimised out>, fini=<optimised out>,
rtld_fini=<optimised out>, stack_end=0x7ffe95fdf8e8)
at ../csu/libc-start.c:291
#25 0x0000556b357e2a1a in _start ()
Thread 11:
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f34c8fd2b4b in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f34c8fcba23 in QSemaphore::acquire(int) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f34c91cd71e in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f34c09a5eb7 in SessionAuthorizer::requestAuthorizationForSession(int const&, bool&) ()
from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so
#5 0x00007f34c099832f in SessionAuthorizer::connection_is_allowed(miral::ApplicationCredentials const&) ()
from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so
#6 0x00007f34c06f4c34 in ?? () from /usr/lib/x86_64-linux-gnu/libmiral.so.2
#7 0x00007f34bff899ac in ?? ()
from /usr/lib/x86_64-linux-gnu/libmirserver.so.43
#8 0x00007f34bff8a4c0 in ?? ()
from /usr/lib/x86_64-linux-gnu/libmirserver.so.43
#9 0x00007f34bff8a67c in ?? ()
from /usr/lib/x86_64-linux-gnu/libmirserver.so.43
#10 0x00007f34bffa135b in ?? ()
from /usr/lib/x86_64-linux-gnu/libmirserver.so.43
#11 0x00007f34bff8912d in ?? ()
from /usr/lib/x86_64-linux-gnu/libmirserver.so.43
#12 0x00007f34c8c58b2f in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#13 0x00007f34c809f6ca in start_thread (arg=0x7f3499dc3700)
at pthread_create.c:333
#14 0x00007f34c86c70ff in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Two threads look suspicious during the hang:
Thread 1:
#0 pthread_ cond_wait@ @GLIBC_ 2.3.2 () unix/sysv/ linux/x86_ 64/pthread_ cond_wait. S:185 :wait(QMutex* , unsigned long) () x86_64- linux-gnu/ libQt5Core. so.5 x86_64- linux-gnu/ libQt5DBus. so.5 x86_64- linux-gnu/ libQt5DBus. so.5 x86_64- linux-gnu/ libQt5DBus. so.5 x86_64- linux-gnu/ libQt5DBus. so.5 :QDBusInterface (QString const&, QString const&, QString const&, QDBusConnection const&, QObject*) () x86_64- linux-gnu/ libQt5DBus. so.5 :UCContentHub( QObject* ) () x86_64- linux-gnu/ libUbuntuToolki t.so.5 x86_64- linux-gnu/ libUbuntuToolki t.so.5 :SingletonInsta nceInfo: :init(QQmlEngin e*) () x86_64- linux-gnu/ libQt5Qml. so.5 pper::toVariant () const () x86_64- linux-gnu/ libQt5Qml. so.5 x86_64- linux-gnu/ libQt5Qml. so.5 ngine:: toVariant( QV4::Value const&, int, bool) () from /usr/lib/ x86_64- linux-gnu/ libQt5Qml. so.5 :write( QQmlPropertyDat a const&, QV4::Value const&, bool, QFlags< QQmlPropertyPri vate::WriteFlag >) () x86_64- linux-gnu/ libQt5Qml. so.5 :update( QFlags< QQmlPropertyPri vate::WriteFlag >) () from /usr/lib/ x86_64- linux-gnu/ libQt5Qml. so.5 x86_64- linux-gnu/ libQt5Qml. so.5 ivate:: complete( QQmlEnginePriva te*, QQmlComponentPr ivate:: ConstructionSta te*) () x86_64- linux-gnu/ libQt5Qml. so.5 ivate:: completeCreate( ) () x86_64- linux-gnu/ libQt5Qml. so.5 :create( QQmlContext* ) () x86_64- linux-gnu/ libQt5Qml. so.5 :continueExecut e() () x86_64- linux-gnu/ libQt5Quick. so.5 te::execute( ) () x86_64- linux-gnu/ libQt5Quick. so.5 e2600, argc=2, 0x7ffe95fdf8f8, init=<optimised out>, fini=<optimised out>, fini=<optimised out>, stack_end= 0x7ffe95fdf8e8) libc-start. c:291
at ../sysdeps/
#1 0x00007f34c8fd2b4b in QWaitCondition:
from /usr/lib/
#2 0x00007f34c965dc7b in ?? () from /usr/lib/
#3 0x00007f34c961a0d5 in ?? () from /usr/lib/
#4 0x00007f34c961a8a5 in ?? () from /usr/lib/
#5 0x00007f34c962671d in ?? () from /usr/lib/
#6 0x00007f34c9626875 in QDBusInterface:
from /usr/lib/
#7 0x00007f348291b12b in UCContentHub:
from /usr/lib/
#8 0x00007f3482936598 in ?? ()
from /usr/lib/
#9 0x00007f34c9e52ea1 in QQmlType:
from /usr/lib/
#10 0x00007f34c9eb04c5 in QV4::QmlTypeWra
from /usr/lib/
#11 0x00007f34c9d886e6 in ?? () from /usr/lib/
#12 0x00007f34c9d88844 in QV4::ExecutionE
#13 0x00007f34c9ea83ae in QQmlBinding:
from /usr/lib/
#14 0x00007f34c9ea94e7 in QQmlBinding:
#15 0x00007f34c9eb3035 in ?? () from /usr/lib/
#16 0x00007f34c9e3d01e in QQmlComponentPr
from /usr/lib/
#17 0x00007f34c9e3d0e7 in QQmlComponentPr
from /usr/lib/
#18 0x00007f34c9e3cf50 in QQmlComponent:
from /usr/lib/
#19 0x00007f34cb97d553 in QQuickView:
from /usr/lib/
#20 0x00007f34cb97db1d in QQuickViewPriva
from /usr/lib/
#21 0x0000556b357e79c5 in ?? ()
#22 0x0000556b357e65b3 in ?? ()
#23 0x0000556b357e26c7 in ?? ()
#24 0x00007f34c85df3f1 in __libc_start_main (main=0x556b357
argv=
rtld_
at ../csu/
#25 0x0000556b357e2a1a in _start ()
Thread 11:
#0 pthread_ cond_wait@ @GLIBC_ 2.3.2 () unix/sysv/ linux/x86_ 64/pthread_ cond_wait. S:185 :wait(QMutex* , unsigned long) () x86_64- linux-gnu/ libQt5Core. so.5 :acquire( int) () x86_64- linux-gnu/ libQt5Core. so.5 :activate( QObject* , int, int, void**) () x86_64- linux-gnu/ libQt5Core. so.5 er::requestAuth orizationForSes sion(int const&, bool&) () x86_64- linux-gnu/ qt5/plugins/ platforms/ libqpa- mirserver. so er::connection_ is_allowed( miral:: ApplicationCred entials const&) () x86_64- linux-gnu/ qt5/plugins/ platforms/ libqpa- mirserver. so x86_64- linux-gnu/ libmiral. so.2 x86_64- linux-gnu/ libmirserver. so.43 x86_64- linux-gnu/ libmirserver. so.43 x86_64- linux-gnu/ libmirserver. so.43 x86_64- linux-gnu/ libmirserver. so.43 x86_64- linux-gnu/ libmirserver. so.43 x86_64- linux-gnu/ libstdc+ +.so.6 3700) create. c:333 unix/sysv/ linux/x86_ 64/clone. S:105
at ../sysdeps/
#1 0x00007f34c8fd2b4b in QWaitCondition:
from /usr/lib/
#2 0x00007f34c8fcba23 in QSemaphore:
from /usr/lib/
#3 0x00007f34c91cd71e in QMetaObject:
from /usr/lib/
#4 0x00007f34c09a5eb7 in SessionAuthoriz
from /usr/lib/
#5 0x00007f34c099832f in SessionAuthoriz
from /usr/lib/
#6 0x00007f34c06f4c34 in ?? () from /usr/lib/
#7 0x00007f34bff899ac in ?? ()
from /usr/lib/
#8 0x00007f34bff8a4c0 in ?? ()
from /usr/lib/
#9 0x00007f34bff8a67c in ?? ()
from /usr/lib/
#10 0x00007f34bffa135b in ?? ()
from /usr/lib/
#11 0x00007f34bff8912d in ?? ()
from /usr/lib/
#12 0x00007f34c8c58b2f in ?? () from /usr/lib/
#13 0x00007f34c809f6ca in start_thread (arg=0x7f3499dc
at pthread_
#14 0x00007f34c86c70ff in clone ()
at ../sysdeps/