SUMMARY STEPS TO REPRODUCE 1. Update kdesrc-build modules to latest master 2. Restart kwin_wayland 3. Try to lock screen via application launcher OBSERVED RESULT kwin_wayland briefly visually glitches and then crashes a quarter or so of a second later EXPECTED RESULT Lock screen should lock normally SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.22.80 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 Kernel Version: 5.13.4-arch1-1-custom-cacule (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor Memory: 15.6 GiB of RAM Graphics Processor: Radeon RX 580 Series
kwin_wayland crash coredump https://mega.nz/file/iMcQQbbT#gwzYDyxic2alpG-nmGb1A1LZS9Be67Nta5ebsAJ-hSU Exported via coredumpctl
Can you please attach a backtrace of the crash? The whole core is not needed, just get a backtrace from that core. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl
Oops. Sorry. Here's the backtrace: https://invent.kde.org/-/snippets/1813
Thanks! Pasting inline: #0 0x00007f1d9f8aed22 in raise () at /usr/lib/libc.so.6 #1 0x00007f1d9f89890e in abort () at /usr/lib/libc.so.6 #2 0x00007f1da01a9910 in () at /usr/lib/libQt5Core.so.5 #3 0x00007f1da01a8cf5 in qt_assert_x(char const*, char const*, char const*, int) () at /usr/lib/libQt5Core.so.5 #4 0x00007f1da35cd08d in KWin::EffectsHandlerImpl::ungrabKeyboard() (this=0x56069f3418d0) at /run/media/valmar/DataSSD/kde/sources/plasma/kwin/src/effects.cpp:651 #5 0x00007f1da32e1934 in KWin::OverviewEffect::realDeactivate() (this=0x56069f1ede10) at /run/media/valmar/DataSSD/kde/sources/plasma/kwin/src/effects/overview/overvieweffect.cpp:261 #6 0x00007f1da32e57d7 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (KWin::OverviewEffect::*)()>::call(void (KWin::OverviewEffect::*)(), KWin::OverviewEffect*, void**) (f=(void (KWin::OverviewEffect::*)(KWin::OverviewEffect * const)) 0x7f1da32e18c6 <KWin::OverviewEffect::realDeactivate()>, o=0x56069f1ede10, arg=0x7ffe51631960) at /usr/include/qt/QtCore/qobjectdefs_impl.h:152 #7 0x00007f1da32e537d in QtPrivate::FunctionPointer<void (KWin::OverviewEffect::*)()>::call<QtPrivate::List<>, void>(void (KWin::OverviewEffect::*)(), KWin::OverviewEffect*, void**) (f=(void (KWin::OverviewEffect::*)(KWin::OverviewEffect * const)) 0x7f1da32e18c6 <KWin::OverviewEffect::realDeactivate()>, o=0x56069f1ede10, arg=0x7ffe51631960) at /usr/include/qt/QtCore/qobjectdefs_impl.h:185 #8 0x00007f1da32e4e35 in QtPrivate::QSlotObject<void (KWin::OverviewEffect::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x56069f217e90, r=0x56069f1ede10, a=0x7ffe51631960, ret=0x0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:418 #9 0x00007f1da040975b in () at /usr/lib/libQt5Core.so.5 #10 0x00007f1da320c315 in KWin::EffectsHandler::screenAboutToLock() (this=0x56069f3418d0) at /run/media/valmar/DataSSD/kde/builds/plasma/kwin/src/libkwineffects/kwineffects_autogen/EWIEGA46WW/moc_kwineffects.cpp:1871 #11 0x00007f1da35e41cd in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (KWin::EffectsHandler::*)()>::call(void (KWin::EffectsHandler::*)(), KWin::EffectsHandler*, void**) (f=(void (KWin::EffectsHandler::*)(KWin::EffectsHandler * const)) 0x7f1da320c2ec <KWin::EffectsHandler::screenAboutToLock()>, o=0x56069f3418d0, arg=0x7ffe51631b10) at /usr/include/qt/QtCore/qobjectdefs_impl.h:152 #12 0x00007f1da35e3396 in QtPrivate::FunctionPointer<void (KWin::EffectsHandler::*)()>::call<QtPrivate::List<>, void>(void (KWin::EffectsHandler::*)(), KWin::EffectsHandler*, void**) (f=(void (KWin::EffectsHandler::*)(KWin::EffectsHandler * const)) 0x7f1da320c2ec <KWin::EffectsHandler::screenAboutToLock()>, o=0x56069f3418d0, arg=0x7ffe51631b10) at /usr/include/qt/QtCore/qobjectdefs_impl.h:185 #13 0x00007f1da35e0f25 in QtPrivate::QSlotObject<void (KWin::EffectsHandler::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x56069f2e4790, r=0x56069f3418d0, a=0x7ffe51631b10, ret=0x0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:418 #14 0x00007f1da040975b in () at /usr/lib/libQt5Core.so.5 #15 0x00007f1da35132bf in KWin::ScreenLockerWatcher::aboutToLock() (this=0x56069e7ddfb0) at /run/media/valmar/DataSSD/kde/builds/plasma/kwin/src/kwin_autogen/EWIEGA46WW/moc_screenlockerwatcher.cpp:183 #16 0x00007f1da36b6e4c in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (KWin::ScreenLockerWatcher::*)()>::call(void (KWin::ScreenLockerWatcher::*)(), KWin::ScreenLockerWatcher*, void**) (f=(void (KWin::ScreenLockerWatcher::*)(KWin::ScreenLockerWatcher * const)) 0x7f1da3513296 <KWin::ScreenLockerWatcher::aboutToLock()>, o=0x56069e7ddfb0, arg=0x7ffe51631cc0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:152 #17 0x00007f1da36b69c0 in QtPrivate::FunctionPointer<void (KWin::ScreenLockerWatcher::*)()>::call<QtPrivate::List<>, void>(void (KWin::ScreenLockerWatcher::*)(), KWin::ScreenLockerWatcher*, void**) (f=(void (KWin::ScreenLockerWatcher::*)(KWin::ScreenLockerWatcher * const)) 0x7f1da3513296 <KWin::ScreenLockerWatcher::aboutToLock()>, o=0x56069e7ddfb0, arg=0x7ffe51631cc0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:185 #18 0x00007f1da36b6099 in QtPrivate::QSlotObject<void (KWin::ScreenLockerWatcher::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x56069f1ffd70, r=0x56069e7ddfb0, a=0x7ffe51631cc0, ret=0x0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:418 #19 0x00007f1da040975b in () at /usr/lib/libQt5Core.so.5 #20 0x00007f1da37c8875 in OrgKdeScreensaverInterface::AboutToLock() (this=0x56069e70eee0) at /run/media/valmar/DataSSD/kde/builds/plasma/kwin/src/kscreenlocker_interface.moc:147 #21 0x00007f1da37c8619 in OrgKdeScreensaverInterface::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x56069e70eee0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffe51631e70) at /run/media/valmar/DataSSD/kde/builds/plasma/kwin/src/kscreenlocker_interface.moc:85 #22 0x00007f1da37c8824 in OrgKdeScreensaverInterface::qt_metacall(QMetaObject::Call, int, void**) (this=0x56069e70eee0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffe51631e70) at /run/media/valmar/DataSSD/kde/builds/plasma/kwin/src/kscreenlocker_interface.moc:134 #23 0x00007f1da3b44300 in () at /usr/lib/libQt5DBus.so.5 #24 0x00007f1da03ff4ff in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5 #25 0x00007f1da1301d62 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5 #26 0x00007f1da03d23aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5 #27 0x00007f1da03d54a9 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5 #28 0x00007f1da042847c in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #29 0x000056069dc0817e in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () #30 0x00007f1da03d0d1c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #31 0x00007f1da03d9284 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5 #32 0x000056069db8a2cb in main(int, char**) (argc=15, argv=0x7ffe51632d28) at /run/media/valmar/DataSSD/kde/sources/plasma/kwin/src/main_wayland.cpp:754 Did yo happen to have the Overview effect active at the time the screen locked?
Yes, I did, and still do, actually. I turned it on to test it out, and then kind of forgot about it.
Just disabled the effect. And locking the screen results in no crash.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/1294
Git commit 2fb52274d09099855cf5d6e9f75cbe00b88fd3c8 by David Edmundson. Committed on 24/08/2021 at 19:45. Pushed by ngraham into branch 'master'. Only try to deactivate overview whilst activate M +5 -1 src/effects/overview/overvieweffect.cpp https://invent.kde.org/plasma/kwin/commit/2fb52274d09099855cf5d6e9f75cbe00b88fd3c8