https://bugs.kde.org/show_bug.cgi?id=424879

            Bug ID: 424879
           Summary: plasmashell aborted a shortly after logging in with
                    the error The Wayland connection experienced a fatal
                    error: Invalid argument
           Product: plasmashell
           Version: 5.19.4
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: k...@davidedmundson.co.uk
          Reporter: matthew.fagn...@utoronto.ca
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Application: plasmashell (5.19.4)

Qt Version: 5.14.2
Frameworks Version: 5.72.0
Operating System: Linux 5.8.0-0.rc7.1.fc33.x86_64 x86_64
Windowing system: Wayland
Distribution: Fedora 33 (KDE Plasma Prerelease)

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

I logged into Plasma 5.19.4 on Wayland from sddm in Fedora Rawhide with KF
5.72.0, Qt 5.14.2. plasmashell aborted shortly after logging in with the error
The Wayland connection experienced a fatal error: Invalid argument according to
the journal. 

Jul 31 17:03:00 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for NotificationPopup_QMLTYPE_610_QML_613(0x55cc662a2b20)
Jul 31 17:03:00 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for NotificationPopup_QMLTYPE_610_QML_613(0x55cc662a2b20)
Jul 31 17:03:00 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for NotificationPopup_QMLTYPE_610_QML_613(0x55cc662a2b20)
Jul 31 17:03:00 plasmashell[5493]: trying to show an empty dialog
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: org.kde.plasmaquick: Couldn't create
KWindowShadow for ToolTipDialog(0x55cc6522bad0)
Jul 31 17:03:04 plasmashell[5493]: The Wayland connection experienced a fatal
error: Invalid argument
Jul 31 17:03:05 plasmashell[5998]: org.kde.plasmaquick: Applet preload policy
set to 1

- Unusual behavior I noticed:
The background went black. plasmashell restarted automatically

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted

[KCrash Handler]
#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:49
#5  0x00007f1fb07d08a4 in __GI_abort () at abort.c:79
#6  0x00007f1fb0bf3a7f in qt_message_fatal (message=<synthetic pointer>...,
context=...) at global/qlogging.cpp:1914
#7  QMessageLogger::fatal (this=this@entry=0x7ffc97230990,
msg=msg@entry=0x7f1f9f338dc8 "The Wayland connection experienced a fatal error:
%s") at global/qlogging.cpp:893
#8  0x00007f1f9f2c8640 in QtWaylandClient::QWaylandDisplay::checkError
(this=<optimized out>) at /usr/include/qt5/QtCore/qlogging.h:90
#9  0x00007f1f9f2c868e in QtWaylandClient::QWaylandDisplay::flushRequests
(this=0x55cc641e0470) at qwaylanddisplay.cpp:209
#10 0x00007f1fb0debfb0 in doActivate<false> (sender=0x55cc641f5100,
signal_index=4, argv=0x7ffc97230a70, argv@entry=0x0) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#11 0x00007f1fb0de67f8 in QMetaObject::activate
(sender=sender@entry=0x55cc641f5100, m=m@entry=0x7f1fb10748a0
<QAbstractEventDispatcher::staticMetaObject>,
local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at
kernel/qobject.cpp:3930
#12 0x00007f1fb0db9af7 in QAbstractEventDispatcher::awake
(this=this@entry=0x55cc641f5100) at .moc/moc_qabstracteventdispatcher.cpp:149
#13 0x00007f1fb0e08bac in QEventDispatcherGlib::processEvents
(this=0x55cc641f5100, flags=...) at kernel/qeventdispatcher_glib.cpp:430
#14 0x00007f1fb0dbb91b in QEventLoop::exec (this=this@entry=0x7ffc97230b90,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:136
#15 0x00007f1fb0dc35a6 in QCoreApplication::exec () at
../../include/QtCore/../../src/corelib/global/qflags.h:118
#16 0x000055cc63509705 in main ()
[Inferior 1 (process 5493) detached]

The reporter indicates this bug may be a duplicate of or related to bug 424719,
bug 424009.

Possible duplicates by query: bug 424804, bug 424719, bug 424709, bug 424593,
bug 424009.

Reported using DrKonqi

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