Bug 466629

Summary:	kscreen-doctor crashes plasmashell
Product:	[Plasma] plasmashell	Reporter:	ashton.ackles
Component:	generic-crash	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	kde, nate
Priority:	NOR	Keywords:	drkonqi
Version:	5.27.1
Target Milestone:	1.0
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description ashton.ackles 2023-03-01 00:38:38 UTC

Application: plasmashell (5.27.1)

Qt Version: 5.15.8
Frameworks Version: 5.103.0
Operating System: Linux 5.19.0-32-generic x86_64
Windowing System: Wayland
Distribution: KDE neon 5.27
DrKonqi: 5.27.1 [KCrashBackend]

-- Information about the crash:
Switching between display setups with kscreen-doctor seems to crash plasmashell. It's not something that happens consistently though it always seems like on the second try of switching my displays back and forth I get greeted by my screens being completely black as plasmashell has crashed. Bear in mind I'm not switching between them rapidly but in 5 to 10 second intervals.

Here's the command I use to switch to my big screen.

kscreen-doctor output.DP-3.enable output.DP-3.primary output.DP-2.disable output.HDMI-A-1.disable

And here's what I use to switch back to my main setup.

kscreen-doctor output.DP-3.disable output.DP-2.enable output.DP-2.primary output.HDMI-A-1.enable

The crash can be reproduced sometimes.

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

[KCrash Handler]
#4  0x00007f5e33079874 in QQuickWindow::maybeUpdate() () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f5e3305fc9e in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5e3306185a in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f5e330618cb in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f5e330619f7 in QQuickItemPrivate::setVisible(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f5e3306f6f3 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007f5e339b906a in PlasmaQuick::AppletQuickItem::qt_metacall(QMetaObject::Call, int, void**) () at /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#18 0x00007f5e1471eada in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#19 0x00007f5e1472c4ea in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#20 0x00007f5e32a8af87 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007f5e329ade72 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f5e329ae412 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f5e329ae5b5 in QV4::QObjectWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007f5e32935677 in QV4::Lookup::setterFallback(QV4::Lookup*, QV4::ExecutionEngine*, QV4::Value&, QV4::Value const&) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007f5e329c87f2 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007f5e329ccb9f in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#27 0x00007f5e3295eaee in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007f5e32aeb3a5 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007f5e32a9bf3b in QQmlBoundSignalExpression::evaluate(void**) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007f5e32a9d678 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007f5e32ad0165 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007f5e312f3c5b in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f5e32a770e4 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#34 0x00007f5e312ca14c in QMetaProperty::write(QObject*, QVariant const&) const () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f5e312f2d5e in QObject::setProperty(char const*, QVariant const&) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f5e339c678d in  () at /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#37 0x000055669b88b066 in  ()
#38 0x00007f5e312f40d4 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f5e312f815e in QTimer::timeout(QTimer::QPrivateSignal) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f5e312e99ff in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f5e3216c793 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007f5e312bc07a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f5e31314e0b in QTimerInfoList::activateTimers() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007f5e31315754 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f5e2fef2d3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f5e2ff476c8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f5e2fef03e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f5e31315ad8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f5e312ba99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007f5e312c2f34 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#51 0x000055669b85da8b in  ()
#52 0x00007f5e30829d90 in __libc_start_call_main (main=main@entry=0x55669b85cb70, argc=argc@entry=2, argv=argv@entry=0x7ffe2f60c708) at ../sysdeps/nptl/libc_start_call_main.h:58
#53 0x00007f5e30829e40 in __libc_start_main_impl (main=0x55669b85cb70, argc=2, argv=0x7ffe2f60c708, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe2f60c6f8) at ../csu/libc-start.c:392
#54 0x000055669b85dbb5 in  ()
[Inferior 1 (process 10282) detached]

Reported using DrKonqi

Comment 1 Nate Graham 2023-03-01 20:28:09 UTC

Thank you for the bug report! Unfortunately I can't reproduce the crash myself on current git masyer, and the backtrace is incomplete and missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

> #18 0x00007f5e1471eada in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
> #19 0x00007f5e1472c4ea in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so

Could you please install debug symbols, reproduce the crash, and attach a new symbolicated backtrace? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports

Also, do you have any 3rd-party scripts or widgets installed?

Thanks again!

Comment 2 Nate Graham 2023-03-01 20:29:29 UTC

*** Bug 466631 has been marked as a duplicate of this bug. ***

Comment 3 Bug Janitor Service 2023-03-16 03:45:38 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Bug Janitor Service 2023-03-31 03:45:30 UTC

This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!