Bug 436663

Application: systemsettings5 (5.21.5)

Qt Version: 5.15.2
Frameworks Version: 5.82.0
Operating System: Linux 5.13.0-0.rc0.20210428gitacd3d2859453.2.fc35.x86_64 x86_64
Windowing System: Wayland
Drkonqi Version: 5.21.5
Distribution: Fedora 35 (KDE Plasma Prerelease)

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

I had finished changing the color scheme to Breeze Dark and changed my icons and cursors to Papirus and Volantes, respectively. I also built and installed the Lightly window decoration style and installed it, but can't recall if I had selected that before or after this exception occurred.  

I began adjusting the Workspace Behavior, specifically Desktop effects, selecting and deselecting different options to see what the changes looked like.  I did not alter default transparency settings, so they were and are transparent upon moving.  When I enabled the "Blur" option under "Appearance" and the settings application crashed.  

I may also have adjusted compositor settings, changing it from OpenGL 3.1 to XRender and back again. In an attempt to reproduce the bug, I made that change and managed to have the same exact exception and stack trace occur a second time, but have not been able to trigger it again.

- Custom settings of the application:

Currently:
Appearance -> Blur: Enabled, default settings
Appearance -> Translucency: Enabled, default settings
Compositor -> OpenGL 3.1
Window Decoration -> Lightly, compiled from source (commit be20234dfb56e936735d215e15e96c6ec0f36e7a: https://github.com/Luwx/Lightly/tree/be20234dfb56e936735d215e15e96c6ec0f36e7a)

Please let me know if I can be of any further assistance!

Thanks!

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f8a52208b38 in typeinfo for GenericBinding<1> () from /lib64/libQt5Qml.so.5
#5  0x00007f8a50af3ec7 in QWaylandClientExtensionPrivate::handleRegistryGlobal (data=0x557d2fd43560, registry=0x557d2e2806a0, id=50, interface=..., version=1) at global/qwaylandclientextension.cpp:67
#6  0x00007f8a50ae03d9 in QtWaylandClient::QWaylandDisplay::registry_global (this=<optimized out>, id=<optimized out>, interface=..., version=<optimized out>) at /usr/src/debug/qt5-qtwayland-5.15.2-6.fc35.x86_64/src/client/qwaylanddisplay.cpp:397
#7  0x00007f8a50afc753 in QtWayland::wl_registry::handle_global (data=0x557d2e2810e0, object=<optimized out>, name=50, interface=0x557d3111df10 "org_kde_kwin_blur_manager", version=1) at /usr/src/debug/qt5-qtwayland-5.15.2-6.fc35.x86_64/src/client/qwayland-wayland.cpp:94
#8  0x00007f8a4e4bec04 in ffi_call_unix64 () at ../src/x86/unix64.S:76
#9  0x00007f8a4e4be107 in ffi_call (cif=cif@entry=0x7ffceb243ed0, fn=<optimized out>, rvalue=<optimized out>, rvalue@entry=0x0, avalue=avalue@entry=0x7ffceb243fa0) at ../src/x86/ffi64.c:525
#10 0x00007f8a50a4dd10 in wl_closure_invoke (closure=closure@entry=0x557d3111de30, target=<optimized out>, target@entry=0x557d2e2806a0, opcode=opcode@entry=0, data=<optimized out>, flags=<optimized out>) at ../src/connection.c:1018
#11 0x00007f8a50a4e42b in dispatch_event (display=0x557d2e284d80, queue=<optimized out>, queue=<optimized out>) at ../src/wayland-client.c:1452
#12 0x00007f8a50a4e61c in dispatch_queue (queue=0x557d2e284e50, display=0x557d2e284d80) at ../src/wayland-client.c:1598
#13 wl_display_dispatch_queue_pending (display=0x557d2e284d80, queue=0x557d2e284e50) at ../src/wayland-client.c:1840
#14 0x00007f8a50ad85df in QtWaylandClient::QWaylandDisplay::flushRequests (this=0x557d2e2810d0) at /usr/src/debug/qt5-qtwayland-5.15.2-6.fc35.x86_64/src/client/qwaylanddisplay.cpp:222
#15 0x00007f8a52e684fd in doActivate<false> (sender=0x557d2e29cbc0, signal_index=4, argv=0x7ffceb244200) at kernel/qobject.cpp:3898
#16 0x00007f8a52e629e7 in QMetaObject::activate (sender=sender@entry=0x557d2e29cbc0, m=m@entry=0x7f8a530fcac0 <QAbstractEventDispatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#17 0x00007f8a52e34a87 in QAbstractEventDispatcher::awake (this=this@entry=0x557d2e29cbc0) at .moc/moc_qabstracteventdispatcher.cpp:149
#18 0x00007f8a52e8478b in QEventDispatcherGlib::processEvents (this=0x557d2e29cbc0, flags=...) at kernel/qeventdispatcher_glib.cpp:430
#19 0x00007f8a52e369b2 in QEventLoop::exec (this=this@entry=0x7ffceb244320, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#20 0x00007f8a52e3e544 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#21 0x0000557d2e1d2d4c in main ()
[Inferior 1 (process 3724) detached]

Possible duplicates by query: bug 435992, bug 435427, bug 434974, bug 434725, bug 434236.

Reported using DrKonqi