Bug 511289

Application: kwin_wayland (6.5.0)

ApplicationNotResponding [ANR]: false
Qt Version: 6.10.0
Frameworks Version: 6.19.0
Operating System: Linux 6.17.5-zen1-1-zen x86_64
Windowing System: Wayland
Distribution: "Arch Linux"
DrKonqi: 6.5.0 [CoredumpBackend]

-- Information about the crash:
This crash happens often after unlocking the screen. After unlock, all I get is error messages from all the crashed programs, probably caused by kwin crashing.
The crash might actually while the screen is locked. From previous logs it seemed like it has something to do with something in powerdevil trying to reference a monitor that isn't there (because it's turned off while I lock the screen?).
One of my monitors starts slow and I also sometimes had an issue with one of the screens being blank after initial startup. This is solved by turning the slower monitor off and then back on.

The crash can be reproduced sometimes.

-- Backtrace (Reduced):
#5  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#6  0x00007fe6d7698a13 in __pthread_kill_internal (threadid=<optimized out>, signo=6) at pthread_kill.c:89
#7  0x00007fe6d763e410 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#8  0x00007fe6d762557a in __GI_abort () at abort.c:77
#9  0x00007fe6d7e9348c in qAbort () at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qassert.cpp:46
#10 qt_maybe_message_fatal<QString&> (msgType=QtFatalMsg, context=<optimized out>, message=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qlogging.cpp:2165
[...]
#12 0x00007fe6d7e94250 in QMessageLogger::fatal (this=this@entry=0x7fff1c32e9d0, msg=msg@entry=0x7fe6dae7de86 "unknown active output") at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qlogging.cpp:901
#13 0x00007fe6da95c8fa in KWin::Workspace::setActiveOutput (this=<optimized out>, output=<optimized out>) at /usr/src/debug/kwin/kwin-6.5.0/src/workspace.cpp:2441
#14 KWin::Workspace::setActiveOutput (this=<optimized out>, output=<optimized out>) at /usr/src/debug/kwin/kwin-6.5.0/src/workspace.cpp:2438
#15 0x00007fe6da97b5ce in KWin::Workspace::takeActivity (this=0x56260b0fc100, window=<optimized out>, flags=...) at /usr/src/debug/kwin/kwin-6.5.0/src/activation.cpp:423
#16 0x00007fe6da97b865 in KWin::Workspace::requestFocus (this=<optimized out>, window=<optimized out>, force=<optimized out>) at /usr/include/qt6/QtCore/qflags.h:77
#17 0x00007fe6da97bbdb in KWin::Workspace::activateNextWindow (this=0x56260b0fc100, window=0x56260bd213c0) at /usr/src/debug/kwin/kwin-6.5.0/src/activation.cpp:516
#18 0x00007fe6dac106aa in KWin::Workspace::removeWaylandWindow (this=0x56260b0fc100, window=0x56260bd213c0) at /usr/src/debug/kwin/kwin-6.5.0/src/workspace.cpp:813
#19 0x00007fe6d7fd716f in QtPrivate::QSlotObjectBase::call (this=0x56260b206890, r=0x56260b0fc100, a=0x7fff1c32ec50, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
#20 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>, argv=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4255
[...]
#22 KWin::WaylandServer::windowRemoved (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/kwin/build/src/kwin_autogen/include/moc_wayland_server.cpp:155


Reported using DrKonqi