SUMMARY STEPS TO REPRODUCE 1. right click on the network icon in systray 2. select "Configure network connections..." 3. resize horizontally the plasma-nm KCM by dragging its border 4. click on any part of the KCM OBSERVED RESULT KCM freezes - window decoration says "Not responding..." EXPECTED RESULT KCM never freezes SOFTWARE/OS VERSIONS Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.16.80 KDE Frameworks Version: 5.61.0 Qt Version: 5.12.3 Thread 5 (Thread 0x7fb4405c4700 (LWP 10128)): #0 0x00007fb47519bd37 in __libc_sendmsg (fd=3, msg=msg@entry=0x7fb4405c3530, flags=flags@entry=16448) at ../sysdeps/unix/sysv/linux/sendmsg.c:28 #1 0x00007fb4649ed41d in wl_connection_flush (connection=0x563ef86b1d60) at ../src/connection.c:315 #2 0x00007fb4649ed5ef in wl_connection_flush (connection=<optimized out>) at ../src/connection.c:297 #3 0x00007fb4649ecc38 in wl_display_flush (display=display@entry=0x563ef86ad900) at ../src/wayland-client.c:1986 #4 0x00007fb4649eccd6 in wl_display_dispatch_queue (display=0x563ef86ad900, queue=0x7fb438004b50) at ../src/wayland-client.c:1765 #5 0x00007fb4649ecf4b in wl_display_roundtrip_queue (display=0x563ef86ad900, queue=0x7fb438004b50) at ../src/wayland-client.c:1238 #6 0x00007fb45746be21 in ?? () from /usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0 #7 0x00007fb45746c11d in ?? () from /usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0 #8 0x00007fb45746c1d4 in ?? () from /usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0 #9 0x00007fb4551e0ae6 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #10 0x00007fb4551e0ed5 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #11 0x00007fb4551dc28d in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #12 0x00007fb470e1e848 in QSGBatchRenderer::Renderer::renderBatches (this=this@entry=0x7fb438010250) at scenegraph/coreapi/qsgbatchrenderer.cpp:2517 #13 0x00007fb470e24056 in QSGBatchRenderer::Renderer::render (this=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:2735 #14 0x00007fb470e14810 in QSGRenderer::renderScene (this=0x7fb438010250, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:244 #15 0x00007fb470e14cbb in QSGRenderer::renderScene (this=<optimized out>, fboId=<optimized out>) at scenegraph/coreapi/qsgrenderer.cpp:197 #16 0x00007fb470e51830 in QSGDefaultRenderContext::renderNextFrame (this=0x563ef8900aa0, renderer=0x7fb438010250, fboId=<optimized out>) at scenegraph/qsgdefaultrendercontext.cpp:182 #17 0x00007fb470eb3a18 in QQuickWindowPrivate::renderSceneGraph (this=this@entry=0x563ef871d7c0, size=...) at items/qquickwindow.cpp:486 #18 0x00007fb470e5ce92 in QSGRenderThread::syncAndRender (this=this@entry=0x563ef8f7a470) at scenegraph/qsgthreadedrenderloop.cpp:646 #19 0x00007fb470e60ae8 in QSGRenderThread::run (this=0x563ef8f7a470) at scenegraph/qsgthreadedrenderloop.cpp:730 #20 0x00007fb471eacc72 in QThreadPrivate::start (arg=0x563ef8f7a470) at thread/qthread_unix.cpp:361 #21 0x00007fb46ea4c6db in start_thread (arg=0x7fb4405c4700) at pthread_create.c:463 #22 0x00007fb47519a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7fb453670700 (LWP 10126)): #0 0x00007fb47518dbf9 in __GI___poll (fds=0x7fb444003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007fb46bfb75c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fb444003ce0, timeout=<optimized out>, context=0x7fb444000bf0) at ../../../../glib/gmain.c:4203 #2 g_main_context_iterate (context=context@entry=0x7fb444000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897 #3 0x00007fb46bfb76dc in g_main_context_iteration (context=0x7fb444000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963 #4 0x00007fb4720e2daf in QEventDispatcherGlib::processEvents (this=0x7fb444000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422 #5 0x00007fb47208403a in QEventLoop::exec (this=this@entry=0x7fb45366fd80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #6 0x00007fb471eab4ca in QThread::exec (this=this@entry=0x563ef8907800) at thread/qthread.cpp:531 #7 0x00007fb470915115 in QQmlThreadPrivate::run (this=0x563ef8907800) at qml/ftw/qqmlthread.cpp:148 #8 0x00007fb471eacc72 in QThreadPrivate::start (arg=0x563ef8907800) at thread/qthread_unix.cpp:361 #9 0x00007fb46ea4c6db in start_thread (arg=0x7fb453670700) at pthread_create.c:463 #10 0x00007fb47519a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7fb453e71700 (LWP 10125)): #0 0x00007fb46ea529f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563ef86cfbdc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x563ef86cfb88, cond=0x563ef86cfbb0) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x563ef86cfbb0, mutex=0x563ef86cfb88) at pthread_cond_wait.c:655 #3 0x00007fb45529631a in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #4 0x00007fb455296047 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #5 0x00007fb46ea4c6db in start_thread (arg=0x7fb453e71700) at pthread_create.c:463 #6 0x00007fb47519a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7fb460e63700 (LWP 10124)): #0 0x00007fb47518dbf9 in __GI___poll (fds=0x7fb45c003ce0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007fb46bfb75c9 in g_main_context_poll (priority=<optimized out>, n_fds=3, fds=0x7fb45c003ce0, timeout=<optimized out>, context=0x7fb45c000bf0) at ../../../../glib/gmain.c:4203 #2 g_main_context_iterate (context=context@entry=0x7fb45c000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897 #3 0x00007fb46bfb76dc in g_main_context_iteration (context=0x7fb45c000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963 #4 0x00007fb4720e2daf in QEventDispatcherGlib::processEvents (this=0x7fb45c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422 #5 0x00007fb47208403a in QEventLoop::exec (this=this@entry=0x7fb460e62d70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #6 0x00007fb471eab4ca in QThread::exec ( this=this@entry=0x7fb473cacd80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:531 #7 0x00007fb473a35015 in QDBusConnectionManager::run ( this=0x7fb473cacd80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178 #8 0x00007fb471eacc72 in QThreadPrivate::start ( arg=0x7fb473cacd80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:361 #9 0x00007fb46ea4c6db in start_thread (arg=0x7fb460e63700) at pthread_create.c:463 #10 0x00007fb47519a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7fb475855800 (LWP 10123)): #0 0x00007fb46ea529f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563ef8f7ab54) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0x563ef8f7ab00, cond=0x563ef8f7ab28) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0x563ef8f7ab28, mutex=0x563ef8f7ab00) at pthread_cond_wait.c:655 #3 0x00007fb471eb3dbb in QWaitConditionPrivate::wait (deadline=..., this=0x563ef8f7ab00) at thread/qwaitcondition_unix.cpp:146 #4 QWaitCondition::wait (this=<optimized out>, mutex=0x563ef8f7a4b0, deadline=...) at thread/qwaitcondition_unix.cpp:225 #5 0x00007fb471eb40c9 in QWaitCondition::wait (this=0x563ef8f7a4b8, mutex=0x563ef8f7a4b0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #6 0x00007fb470e5da6d in QSGThreadedRenderLoop::polishAndSync (this=this@entry=0x563ef87ceb50, w=<optimized out>, w@entry=0x563ef8f645b0, inExpose=inExpose@entry=true) at scenegraph/qsgthreadedrenderloop.cpp:1211 #7 0x00007fb470e5ffd5 in QSGThreadedRenderLoop::handleExposure (this=this@entry=0x563ef87ceb50, window=window@entry=0x563ef87cf470) at scenegraph/qsgthreadedrenderloop.cpp:1005 #8 0x00007fb470e60659 in QSGThreadedRenderLoop::exposureChanged (this=0x563ef87ceb50, window=0x563ef87cf470) at scenegraph/qsgthreadedrenderloop.cpp:916 #9 0x00007fb47265a655 in QWindow::event (this=this@entry=0x563ef87cf470, ev=ev@entry=0x7fff161541f0) at kernel/qwindow.cpp:2341 #10 0x00007fb470ebf025 in QQuickWindow::event (this=0x563ef87cf470, e=0x7fff161541f0) at items/qquickwindow.cpp:1675 #11 0x00007fb472e8165c in QApplicationPrivate::notify_helper (this=this@entry=0x563ef86a4610, receiver=receiver@entry=0x563ef87cf470, e=e@entry=0x7fff161541f0) at kernel/qapplication.cpp:3736 #12 0x00007fb472e88b90 in QApplication::notify (this=0x7fff16154600, receiver=0x563ef87cf470, e=0x7fff161541f0) at kernel/qapplication.cpp:3483 #13 0x00007fb472085d18 in QCoreApplication::notifyInternal2 (receiver=0x563ef87cf470, event=0x7fff161541f0) at kernel/qcoreapplication.cpp:1060 #14 0x00007fb472085efe in QCoreApplication::sendSpontaneousEvent ( receiver=receiver@entry=0x563ef87cf470, event=event@entry=0x7fff161541f0) at kernel/qcoreapplication.cpp:1462 #15 0x00007fb47265019a in QGuiApplicationPrivate::processExposeEvent (e=0x563ef8e1d420) at kernel/qguiapplication.cpp:3066 #16 0x00007fb4726503ed in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x563ef8e1d420) at kernel/qguiapplication.cpp:1902 #17 0x00007fb472628b4b in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:1151 #18 0x00007fb464e81000 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5 #19 0x00007fb46bfb7417 in g_main_dispatch (context=0x563ef86e8340) at ../../../../glib/gmain.c:3176 #20 g_main_context_dispatch (context=context@entry=0x563ef86e8340) at ../../../../glib/gmain.c:3829 #21 0x00007fb46bfb7650 in g_main_context_iterate (context=context@entry=0x563ef86e8340, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3902 #22 0x00007fb46bfb76dc in g_main_context_iteration (context=0x563ef86e8340, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963 #23 0x00007fb4720e2daf in QEventDispatcherGlib::processEvents (this=0x563ef86d88f0, flags=...) at kernel/qeventdispatcher_glib.cpp:422 #24 0x00007fb47208403a in QEventLoop::exec (this=this@entry=0x7fff161544d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #25 0x00007fb47208d170 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1363 #26 0x00007fb472644a7c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1779 #27 0x00007fb472e815b5 in QApplication::exec () at kernel/qapplication.cpp:2893 #28 0x00007fb4754731b4 in kdemain (_argc=<optimized out>, _argv=<optimized out>) at ./kcmshell/main.cpp:328 #29 0x00007fb47509ab97 in __libc_start_main (main=0x563ef725c720 <main>, argc=2, argv=0x7fff16154758, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff16154748) at ../csu/libc-start.c:310 #30 0x0000563ef725c75a in _start () Desanexando do programa: /usr/bin/kcmshell5, process 10123
Does any other standalone KCM freeze on wayland? You can try to open any other with kcmshell5.
You can ignore the comment, I tried it myself and I can reproduce it, while other kcms seem to work fine.
Fix for this issue: https://phabricator.kde.org/D23020
Git commit ccce9e3cd24740660ae7df8f896039ef1ec8e57d by Jan Grulich. Committed on 12/08/2019 at 11:51. Pushed by grulich into branch 'master'. Use QQuickWidget instead of a QQuickView placed into QWidget Summary: BUG: 410703 Reviewers: #plasma, apol Reviewed By: apol Subscribers: plasma-devel Tags: #plasma Differential Revision: https://phabricator.kde.org/D23020 M +1 -0 CMakeLists.txt M +1 -0 kcm/CMakeLists.txt M +19 -24 kcm/kcm.cpp M +0 -1 kcm/kcm.h M +11 -4 kcm/kcm.ui M +0 -1 kcm/qml/main.qml https://commits.kde.org/plasma-nm/ccce9e3cd24740660ae7df8f896039ef1ec8e57d