Bug 447113

Summary: KRunner shows just blank rectangle
Product: [Plasma] krunner Reporter: Tom Kijas <t.kijas>
Component: generalAssignee: Alexander Lohnau <alexander.lohnau>
Status: RESOLVED NOT A BUG    
Severity: crash CC: iodreamify, nate, plasma-bugs, t.kijas
Priority: NOR Keywords: drkonqi
Version: 5.23.4   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: KRunner broken

Description Tom Kijas 2021-12-17 08:36:56 UTC 
Application: krunner (5.23.4)

Qt Version: 5.15.3
Frameworks Version: 5.89.0
Operating System: Linux 5.11.0-43-generic x86_64
Windowing System: X11
Distribution: KDE neon User - Plasma 25th Anniversary Edition
DrKonqi: 5.23.4 [KCrashBackend]

-- Information about the crash:
- What I was doing when the application crashed:
KRunner shows just blank rectangle, I am not able to write there, it does nothing. I had to start gdb to make it "crash", otherwise it just silently appears (as a blank rectangle) and disappears if clicked elsewhere.

- Unusual behavior I noticed:
Same blank rectangle (different size) appears when I lock screen, this way I am unable to write password and have to tty2 it.
Breeze theme disappeared, although it's components like icons still can be choosen in settings.

The crash can be reproduced every time.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault

[New LWP 58650]
[New LWP 58651]
[New LWP 58652]
[New LWP 58653]
[New LWP 58654]
[New LWP 58655]
[New LWP 58656]
[New LWP 58657]
[New LWP 58658]
[New LWP 58661]
[New LWP 58662]
[New LWP 58663]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f15dfa98aff in __GI___poll (fds=0x7ffc170e0d78, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
[Current thread is 1 (Thread 0x7f15db84c980 (LWP 58649))]

Thread 13 (Thread 0x7f15a518f700 (LWP 58663)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe6eb410) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe6eb3c0, cond=0x5564fe6eb3e8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe6eb3e8, mutex=0x5564fe6eb3c0) at pthread_cond_wait.c:638
#3  0x00007f15dfe2b5cb in QWaitConditionPrivate::wait (deadline=..., this=0x5564fe6eb3c0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x7f15cc009f10, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f15e1af0c24 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f15e1af1099 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f15dfe2545c in QThreadPrivate::start (arg=0x7f15cc009e70) at thread/qthread_unix.cpp:329
#8  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f15a5990700 (LWP 58662)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe8e34d4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe8e3480, cond=0x5564fe8e34a8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe8e34a8, mutex=0x5564fe8e3480) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f15c50c7700 (LWP 58661)):
#0  0x00007f15dfa98aff in __GI___poll (fds=0x7f15a0004a60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f15de4b536e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f15de4b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f15e006661b in QEventDispatcherGlib::processEvents (this=0x7f15a0000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f15e000a8ab in QEventLoop::exec (this=this@entry=0x7f15c50c6c00, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f15dfe242c2 in QThread::exec (this=this@entry=0x5564fe449f00) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f15e1776549 in QQmlThreadPrivate::run (this=0x5564fe449f00) at qml/ftw/qqmlthread.cpp:155
#7  0x00007f15dfe2545c in QThreadPrivate::start (arg=0x5564fe449f00) at thread/qthread_unix.cpp:329
#8  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f15c58c8700 (LWP 58658)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe18c200) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe18c1b0, cond=0x5564fe18c1d8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe18c1d8, mutex=0x5564fe18c1b0) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f15c60c9700 (LWP 58657)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe18c200) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe18c1b0, cond=0x5564fe18c1d8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe18c1d8, mutex=0x5564fe18c1b0) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f15d0b9f700 (LWP 58656)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe18bc70) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe18bc20, cond=0x5564fe18bc48) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe18bc48, mutex=0x5564fe18bc20) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f15d13a0700 (LWP 58655)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe18bc70) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe18bc20, cond=0x5564fe18bc48) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe18bc48, mutex=0x5564fe18bc20) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f15d1ba1700 (LWP 58654)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe18bc70) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe18bc20, cond=0x5564fe18bc48) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe18bc48, mutex=0x5564fe18bc20) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f15d23a2700 (LWP 58653)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe07c2c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe07c278, cond=0x5564fe07c2a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe07c2a0, mutex=0x5564fe07c278) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f15d8f7a700 (LWP 58652)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5564fe188040) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5564fe187ff0, cond=0x5564fe188018) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564fe188018, mutex=0x5564fe187ff0) at pthread_cond_wait.c:638
#3  0x00007f15d256877b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f15d256837b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f15d9da2700 (LWP 58651)):
#0  0x00007f15dfa98aff in __GI___poll (fds=0x7f15cc004e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f15de4b536e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f15de4b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f15e006661b in QEventDispatcherGlib::processEvents (this=0x7f15cc000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f15e000a8ab in QEventLoop::exec (this=this@entry=0x7f15d9da1bf0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f15dfe242c2 in QThread::exec (this=this@entry=0x7f15e0410d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f15e038cf4b in QDBusConnectionManager::run (this=0x7f15e0410d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#7  0x00007f15dfe2545c in QThreadPrivate::start (arg=0x7f15e0410d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329
#8  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f15daa6d700 (LWP 58650)):
#0  0x00007f15dfa98aff in __GI___poll (fds=0x7f15daa6cb28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f15df886c1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f15df88890a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f15db1a5e88 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f15dfe2545c in QThreadPrivate::start (arg=0x5564fdfaa2f0) at thread/qthread_unix.cpp:329
#5  0x00007f15df0ad609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f15dfaa5293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f15db84c980 (LWP 58649)):
[KCrash Handler]
#4  0x00007f15e00416ee in qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > > (ptr=...) at kernel/qobject.cpp:4029
#5  QObject::d_func (this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:132
#6  QObject::setProperty (this=this@entry=0x0, name=name@entry=0x5564fda147e0 "runner", value=...) at kernel/qobject.cpp:4030
#7  0x00005564fda1245a in View::query (this=0x7ffc170e2690, term=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:257
#8  0x00005564fda10853 in <lambda()>::operator() (__closure=0x7ffc170e2670) at ./krunner/main.cpp:96
#9  <lambda(const QStringList&, const QString&)>::operator() (__closure=<optimized out>, __closure=<optimized out>, workingDirectory=..., arguments=...) at ./krunner/main.cpp:107
#10 QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1>, QtPrivate::List<const QStringList&, const QString&>, void, main(int, char**)::<lambda(const QStringList&, const QString&)> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:146
#11 QtPrivate::Functor<main(int, char**)::<lambda(const QStringList&, const QString&)>, 2>::call<QtPrivate::List<QStringList const&, QString const&>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:256
#12 QtPrivate::QFunctorSlotObject<main(int, char**)::<lambda(const QStringList&, const QString&)>, 2, QtPrivate::List<const QStringList&, const QString&>, void>::impl (which=1, r=<optimized out>, ret=<optimized out>, a=<optimized out>, this_=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:443
#13 QtPrivate::QFunctorSlotObject<main(int, char**)::<lambda(const QStringList&, const QString&)>, 2, QtPrivate::List<const QStringList&, const QString&>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:436
#14 0x00007f15e0042dce in QtPrivate::QSlotObjectBase::call (a=0x7ffc170e1c00, r=0x7ffc170e2690, this=0x5564fe4320c0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#15 doActivate<false> (sender=0x7ffc170e2650, signal_index=3, argv=0x7ffc170e1c00) at kernel/qobject.cpp:3886
#16 0x00007f15e003c197 in QMetaObject::activate (sender=sender@entry=0x7ffc170e2650, m=m@entry=0x7f15e12d57a0 <KDBusService::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffc170e1c00) at kernel/qobject.cpp:3946
#17 0x00007f15e12b7c5b in KDBusService::activateRequested (this=this@entry=0x7ffc170e2650, _t1=..., _t2=...) at ./obj-x86_64-linux-gnu/src/KF5DBusAddons_autogen/EWIEGA46WW/moc_kdbusservice.cpp:204
#18 0x00007f15e12baf61 in KDBusService::CommandLine (this=0x7ffc170e2650, arguments=..., workingDirectory=..., platform_data=...) at ./src/kdbusservice.cpp:349
#19 0x00007f15e12ce6dd in KDBusServiceExtensionsAdaptor::CommandLine (platform_data=..., working_dir=..., arguments=..., this=this@entry=0x5564fe16e9b0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:425
#20 KDBusServiceExtensionsAdaptor::qt_static_metacall (_o=_o@entry=0x5564fe16e9b0, _a=_a@entry=0x7ffc170e1dd0, _id=0, _c=QMetaObject::InvokeMetaMethod) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.moc:94
#21 0x00007f15e12ce81f in KDBusServiceExtensionsAdaptor::qt_static_metacall (_a=0x7ffc170e1dd0, _id=0, _c=QMetaObject::InvokeMetaMethod, _o=0x5564fe16e9b0) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.moc:131
#22 KDBusServiceExtensionsAdaptor::qt_metacall (this=0x5564fe16e9b0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffc170e1dd0) at ./obj-x86_64-linux-gnu/src/kdbusserviceextensions_adaptor.moc:131
#23 0x00007f15e039955b in QDBusConnectionPrivate::deliverCall (this=<optimized out>, object=<optimized out>, msg=..., metaTypes=..., slotIdx=<optimized out>) at qdbusintegrator.cpp:1001
#24 0x00007f15e039e9e7 in QDBusConnectionPrivate::activateCall (this=this@entry=0x7f15cc003a00, object=0x5564fe16e9b0, flags=flags@entry=273, msg=...) at qdbusintegrator.cpp:904
#25 0x00007f15e039f28e in QDBusConnectionPrivate::activateCall (msg=..., flags=273, object=<optimized out>, this=0x7f15cc003a00) at qdbusintegrator.cpp:853
#26 QDBusConnectionPrivate::activateObject (pathStartPos=<optimized out>, msg=..., node=..., this=0x7f15cc003a00) at qdbusintegrator.cpp:1497
#27 QDBusConnectionPrivate::activateObject (this=0x7f15cc003a00, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1447
#28 0x00007f15e03a201c in QDBusActivateObjectEvent::placeMetaCall (this=0x7f15cc010a80) at qdbusintegrator.cpp:1617
#29 0x00007f15e0039949 in QObject::event (this=0x7ffc170e2650, e=0x7f15cc010a80) at kernel/qobject.cpp:1314
#30 0x00007f15e0cc0dc3 in QApplicationPrivate::notify_helper (this=this@entry=0x5564fdfa6a60, receiver=receiver@entry=0x7ffc170e2650, e=e@entry=0x7f15cc010a80) at kernel/qapplication.cpp:3632
#31 0x00007f15e0cc9bb8 in QApplication::notify (this=0x7ffc170e2630, receiver=0x7ffc170e2650, e=0x7f15cc010a80) at kernel/qapplication.cpp:3156
#32 0x00007f15e000bdaa in QCoreApplication::notifyInternal2 (receiver=0x7ffc170e2650, event=0x7f15cc010a80) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#33 0x00007f15e000e6b1 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x5564fdf884b0) at kernel/qcoreapplication.cpp:1821
#34 0x00007f15e0066fa7 in postEventSourceDispatch (s=0x5564fe079e40) at kernel/qeventdispatcher_glib.cpp:277
#35 0x00007f15de4b517d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f15de4b5400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f15de4b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f15e0066602 in QEventDispatcherGlib::processEvents (this=0x5564fe06bc60, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#39 0x00007f15e000a8ab in QEventLoop::exec (this=this@entry=0x7ffc170e2550, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#40 0x00007f15e0012a64 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#41 0x00005564fda0fd61 in main (argc=<optimized out>, argv=<optimized out>) at ./krunner/main.cpp:115
[Inferior 1 (process 58649) detached]

Possible duplicates by query: bug 425602, bug 423891, bug 402103, bug 401450, bug 398896.

Reported using DrKonqi
Comment 1 Alexander Lohnau 2021-12-17 09:51:18 UTC 
Please start KRunner using the console and look if there are any errors printed out.
Comment 2 Nate Graham 2021-12-17 19:16:06 UTC 
(for reference, you can do this by entering `krunner --replace` in a terminal window)
Comment 3 Tom Kijas 2021-12-20 08:00:05 UTC 
(In reply to Nate Graham from comment #2)
> (for reference, you can do this by entering `krunner --replace` in a
> terminal window)

Thanks, I tried it, this is what's in Konsole:
File name empty!
No component for QUrl("")
Comment 4 Tom Kijas 2021-12-20 08:03:31 UTC 
Created attachment 144703 [details]
KRunner broken

That's how's it like. Lockscreen password rectangle is similar, bigger (proportions are OK), but also without any text, buttons etc.
Comment 5 Alexander Lohnau 2021-12-20 16:35:46 UTC 
Do you have any third party global theme currently applied?
Comment 6 iodreamify 2021-12-26 12:42:19 UTC 
I just had a similar bug but in my case it was because i had an incomplete folder structure created in ~/.local/share/plasma/look-and-feel/org.kde.breeze.desktop/ .
Removing it or fixing the folder structure restored krunner to normal.
Comment 7 Alexander Lohnau 2021-12-26 13:44:53 UTC 
>Removing it or fixing the folder structure restored krunner to normal.

What do you mean by fixing?
Comment 8 iodreamify 2021-12-26 13:54:08 UTC 
(In reply to Alexander Lohnau from comment #7)
> >Removing it or fixing the folder structure restored krunner to normal.
> 
> What do you mean by fixing?

Well unless i misunderstand how all this works, to override files inside /usr/share/plasma/look-and-feel/org.kde.breeze.desktop/ you need to completely copy all files inside the folder to ~/.local/share/look-and-feel/org.kde.breeze.desktop/ . Originally my goal was to only modify Plasma's OSD volume popup, so i copied only those 2 files inside 

~/.local/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/osd

and disregarded the rest. This is when i started getting the bug's behavior and the
 
File name empty!
No component for QUrl("")

errors from krunner. Copying the whole folder structure and then replacing the 2 OSD files which needed modifying fixed krunner.
Comment 9 Nate Graham 2021-12-26 22:51:46 UTC 
Yep, that'd do it. :)