Bug 510066

Summary: kwin_wayland sometimes crashes in KWin::Window::setMoveResizeOutput() when waking up from display sleep
Product: [Plasma] kwin Reporter: Jona Wagner <jona>
Component: generic-crashAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: akselmo, kdedev, nate
Priority: NOR Keywords: regression
Version First Reported In: 6.4.5   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=508555
https://bugs.kde.org/show_bug.cgi?id=495702
https://bugs.kde.org/show_bug.cgi?id=489632
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Jona Wagner 2025-09-29 18:00:13 UTC 
SUMMARY

kwin_wayland seems to crash sometimes when waking up from (longer) display sleeps. It's not 100% reproducible (happens to me every couple days)

Crashes started a few weeks ago
Tue 2025-09-16 10:36:27 CEST    2444 1000 1000 SIGSEGV missing      /usr/bin/kwin_wayland                                                                                 -
Wed 2025-09-17 17:26:25 CEST    2367 1000 1000 SIGSEGV missing      /usr/bin/kwin_wayland                                                                                 -
Thu 2025-09-18 15:36:22 CEST    2609 1000 1000 SIGSEGV missing      /usr/bin/kwin_wayland                                                                                 -
Wed 2025-09-24 11:17:40 CEST    2658 1000 1000 SIGSEGV inaccessible /usr/bin/kwin_wayland                                                                                 -
Thu 2025-09-25 16:11:28 CEST    2450 1000 1000 SIGSEGV inaccessible /usr/bin/kwin_wayland                                                                                 -
Fri 2025-09-26 15:17:39 CEST    8608 1000 1000 SIGSEGV inaccessible /usr/bin/kwin_wayland                                                                                 -
Mon 2025-09-29 13:14:08 CEST    3530 1000 1000 SIGSEGV inaccessible /usr/bin/kwin_wayland                                                                                 -

might have been introduced by one of these updates
[2025-08-31T00:15:43+0200] [ALPM] upgraded kwin (6.4.4-4 -> 6.4.4-10)
[2025-09-11T23:39:06+0200] [ALPM] upgraded kwin (6.4.4-10 -> 6.4.5-1)
[2025-09-13T21:53:10+0200] [ALPM] upgraded kwindowsystem (6.17.0-1 -> 6.18.0-1)
[2025-09-22T21:35:39+0200] [ALPM] upgraded kwin (6.4.5-1 -> 6.4.5-3)

MAYBE RELATED TO

https://bugs.kde.org/show_bug.cgi?id=489632
https://bugs.kde.org/show_bug.cgi?id=495702

SYSTEM INFO

Operating System: Arch Linux
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.8-arch3-1 (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 9950X 16-Core Processor
Memory: 96 GiB of RAM (93,8 GiB usable)
Graphics Processor: AMD Radeon RX 7900 XTX
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7E49
System Version: 1.0

STACK TRACE

#0  std::__atomic_base<QObjectPrivate::SignalVector*>::load (this=0x1a5f0018000b, __m=std::memory_order_relaxed) at /usr/include/c++/15.2.1/bits/atomic_base.h:828
#1  std::atomic<QObjectPrivate::SignalVector*>::load (this=0x1a5f0018000b, __m=std::memory_order_relaxed) at /usr/include/c++/15.2.1/atomic:587
#2  QAtomicOps<QObjectPrivate::SignalVector*>::loadRelaxed<QObjectPrivate::SignalVector*> (_q_value=<error reading variable: Cannot access memory at address 0x1a5f0018000b>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qatomic_cxx11.h:202
#3  QBasicAtomicPointer<QObjectPrivate::SignalVector>::loadRelaxed (this=0x1a5f0018000b) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qbasicatomic.h:170
#4  QObjectPrivate::ConnectionData::resizeSignalVector (this=0x1a5f00180003, size=6) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject_p_p.h:184
#5  QObjectPrivate::addConnection (this=<optimized out>, signal=5, c=0x55b19a628b60) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:281
#6  0x00007f394a1d17b7 in QObjectPrivate::connectImpl (sender=sender@entry=0x55b19a6ae490, signal_index=<optimized out>, receiver=receiver@entry=0x55b19a8e1540, slot=<optimized out>, slotObjRaw=slotObjRaw@entry=0x55b199f8ee60, type=<optimized out>, types=<optimized out>, senderMetaObject=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/tools/qscopedpointer.h:110
#7  0x00007f394a1d1b64 in QObject::connectImpl (sender=sender@entry=0x55b19a6ae490, signal=signal@entry=0x7ffe94323930, receiver=receiver@entry=0x55b19a8e1540, slot=slot@entry=0x7ffe94323920, slotObjRaw=0x55b199f8ee60, type=Qt::AutoConnection, types=0x0, senderMetaObject=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:5257
#8  0x00007f394cfe46e9 in QObject::connect<void (KWin::Output::*)(), void (KWin::Window::*)()> (type=Qt::AutoConnection, sender=0x55b19a6ae490, signal=(void (KWin::Output::*)(KWin::Output * const)) 0x7f394cd96760 <KWin::Output::scaleChanged()>, context=0x55b19a8e1540, slot=@0x7ffe94323920: (void (KWin::Window::*)(KWin::Window * const)) 0x7f394cfe1ca0 <KWin::Window::updateNextTargetScale()>)
    at /usr/include/qt6/QtCore/qobject.h:272
#9  KWin::Window::setMoveResizeOutput (this=0x55b19a8e1540, output=0x55b19a6ae490) at /usr/src/debug/kwin/kwin-6.4.5/src/window.cpp:3521
#10 0x00007f394d0177e5 in KWin::XdgToplevelWindow::XdgToplevelWindow (this=<optimized out>, shellSurface=<optimized out>, this=<optimized out>, shellSurface=<optimized out>) at /usr/src/debug/kwin/kwin-6.4.5/src/xdgshellwindow.cpp:440
#11 0x00007f394d0186ad in KWin::XdgShellIntegration::createXdgToplevelWindow (this=0x55b199491210, toplevel=0x55b19a1c4ee0) at /usr/src/debug/kwin/kwin-6.4.5/src/xdgshellintegration.cpp:71
#12 0x00007f394a1d466f in QtPrivate::QSlotObjectBase::call (this=<optimized out>, r=<optimized out>, a=<optimized out>, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
#13 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>, argv=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4157
#14 0x00007f394d1bf138 in QMetaObject::activate<void, KWin::XdgToplevelInterface*> (sender=<optimized out>, mo=<optimized out>, local_signal_index=0, ret=0x0) at /usr/include/qt6/QtCore/qobjectdefs.h:306
#15 KWin::XdgShellInterface::toplevelCreated (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/kwin/build/src/kwin_autogen/include/moc_xdgshell.cpp:174
#16 0x00007f3948641ac6 in ffi_call_unix64 () at ../src/x86/unix64.S:104
#17 0x00007f394863e76b in ffi_call_int (cif=cif@entry=0x7ffe94323e70, fn=fn@entry=0x7f394d21a080 <QtWaylandServer::xdg_surface::handle_get_toplevel(wl_client*, wl_resource*, unsigned int)>, rvalue=<optimized out>, rvalue@entry=0x0, avalue=avalue@entry=0x7ffe94323f40, closure=closure@entry=0x0) at ../src/x86/ffi64.c:676
#18 0x00007f394864106e in ffi_call (cif=cif@entry=0x7ffe94323e70, fn=0x7f394d21a080 <QtWaylandServer::xdg_surface::handle_get_toplevel(wl_client*, wl_resource*, unsigned int)>, rvalue=rvalue@entry=0x0, avalue=avalue@entry=0x7ffe94323f40) at ../src/x86/ffi64.c:713
#19 0x00007f394bb84532 in wl_closure_invoke (closure=closure@entry=0x55b199b25b70, target=<optimized out>, target@entry=0x55b19a8dba30, opcode=opcode@entry=1, data=<optimized out>, data@entry=0x55b199b1f070, flags=2) at ../wayland-1.24.0/src/connection.c:1241
#20 0x00007f394bb89d30 in wl_client_connection_data (fd=<optimized out>, mask=<optimized out>, data=<optimized out>) at ../wayland-1.24.0/src/wayland-server.c:483
#21 0x00007f394bb88182 in wl_event_loop_dispatch (loop=0x55b1981d1b50, timeout=<optimized out>) at ../wayland-1.24.0/src/event-loop.c:1059
#22 0x00007f394d10b4fa in KWin::Display::dispatchEvents (this=<optimized out>) at /usr/src/debug/kwin/kwin-6.4.5/src/wayland/display.cpp:138
#23 0x00007f394a1d466f in QtPrivate::QSlotObjectBase::call (this=<optimized out>, r=<optimized out>, a=<optimized out>, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
#24 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>, argv=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4157
#25 0x00007f394a1de9c0 in QMetaObject::activate<void, QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal> (sender=0x55b1992fc070, mo=<optimized out>, local_signal_index=0, ret=0x0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs.h:306
#26 QSocketNotifier::activated (this=0x55b1992fc070, _t1=..., _t2=<optimized out>, _t3=...) at /usr/src/debug/qt6-base/build/src/corelib/Core_autogen/include/moc_qsocketnotifier.cpp:161
#27 QSocketNotifier::event (this=0x55b1992fc070, e=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qsocketnotifier.cpp:327
#28 0x00007f394b501dd0 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55b1992fc070, e=0x7ffe94324760) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3300
#29 0x00007f394a168678 in QCoreApplication::notifyInternal2 (receiver=0x55b1992fc070, event=0x7ffe94324760) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1106
#30 0x00007f394a328f19 in QCoreApplication::sendEvent (receiver=<optimized out>, event=0x7ffe94324760) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1546
#31 QEventDispatcherUNIXPrivate::activateSocketNotifiers (this=this@entry=0x55b198125740) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:276
#32 0x00007f394a329c6b in QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=..., flags@entry=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:498
#33 0x00007f394af1b073 in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at /usr/src/debug/qt6-base/qtbase/src/gui/platform/unix/qunixeventdispatcher.cpp:27
#34 0x00007f394a174ca6 in QEventLoop::processEvents (this=0x7ffe94324930, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#35 QEventLoop::exec (this=0x7ffe94324930, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#36 0x00007f394a16cd21 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1449
#37 0x00007f394b4fc5ea in QApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:2567
#38 0x000055b168f3ad26 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kwin/kwin-6.4.5/src/main_wayland.cpp:635

LOGS

Sep 29 12:12:43 r9950 rtkit-daemon[2172]: Supervising 10 threads of 6 processes of 1 users.
Sep 29 12:13:53 r9950 rtkit-daemon[2172]: Supervising 10 threads of 6 processes of 1 users.
Sep 29 12:13:53 r9950 rtkit-daemon[2172]: Supervising 10 threads of 6 processes of 1 users.
Sep 29 12:15:18 r9950 rtkit-daemon[2172]: Supervising 10 threads of 6 processes of 1 users.
Sep 29 12:15:18 r9950 rtkit-daemon[2172]: Supervising 10 threads of 6 processes of 1 users.
Sep 29 12:15:18 r9950 rtkit-daemon[2172]: Successfully made thread 278211 of process 24104 owned by '1000' RT at priority 10.
Sep 29 12:15:18 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:15:25 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:15:25 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:16 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:16 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:19 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:19 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:43 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:43 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:17:54 r9950 wireplumber[3592]: wp-event-dispatcher: <WpAsyncEventHook:0x562b55ab0590> failed: failed to activate item: Object activation aborted: proxy destroyed
Sep 29 12:18:28 r9950 wireplumber[3592]: wp-event-dispatcher: <WpAsyncEventHook:0x562b55ab0590> failed: failed to activate item: Object activation aborted: proxy destroyed
Sep 29 12:18:39 r9950 wireplumber[3592]: wp-event-dispatcher: <WpAsyncEventHook:0x562b55a96d70> failed: <WpSiStandardLink:0x562b55dd3170> link failed: 1 of 1 PipeWire links failed to activate
Sep 29 12:19:04 r9950 plasmashell[3763]: file:///usr/share/plasma/plasmoids/org.kde.plasma.systemtray/contents/ui/items/PlasmoidItem.qml:208: TypeError: Cannot read property 'fullRepresentationItem' of null
Sep 29 12:19:04 r9950 plasmashell[3763]: file:///usr/share/plasma/plasmoids/org.kde.plasma.systemtray/contents/ui/items/PlasmoidItem.qml:201: TypeError: Cannot read property 'compactRepresentationItem' of null
Sep 29 12:19:04 r9950 plasmashell[3763]: file:///usr/share/plasma/plasmoids/org.kde.plasma.systemtray/contents/ui/items/PlasmoidItem.qml:24: TypeError: Cannot read property 'toolTipMainText' of null
Sep 29 12:19:05 r9950 kded6[3697]: Service  ":1.96" unregistered
Sep 29 12:19:45 r9950 dbus-broker[1928]: A security policy denied :1.32 to send method call /org/freedesktop/login1/seat/seat0:org.freedesktop.login1.Seat.Inhibit to org.freedesktop.login1.
Sep 29 12:19:45 r9950 kwin_wayland[3530]: kwin_core: Failed to delay sleep: Sender is not authorized to send message
Sep 29 12:22:44 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:22:44 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:24:33 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:24:33 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:25:25 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:25:25 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:27:45 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:27:45 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:32:45 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:32:45 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:35:25 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:35:25 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:35:34 r9950 kded6[3697]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:34 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:34 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:34 r9950 kdeconnectd[3982]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 keepassxc[4155]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 29 12:35:34 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 12:35:34 r9950 yakuake[3987]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 12:35:34 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 12:35:34 r9950 ksecretd[3336]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 kactivitymanagerd[3802]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 python[3980]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 29 12:35:34 r9950 xdg-desktop-portal-kde[4057]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 kwalletd6[22790]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 polkit-kde-authentication-agent-1[3806]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 flameshot[3981]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 chromium[22397]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::PlaceholderOutput(0x55b19a564ce0, name="Placeholder-1", geometry=QRect(0,0 1920x1080), scale=1)
Sep 29 12:35:34 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::PlaceholderOutput(0x55b19a564ce0, name="Placeholder-1", geometry=QRect(0,0 1920x1080), scale=1)
Sep 29 12:35:34 r9950 org_kde_powerdevil[3807]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 plasmashell[3763]: kde.plasmashell: requesting unexisting screen available rect -1
Sep 29 12:35:34 r9950 plasmashell[3763]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 kscreenlocker_greet[284707]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 12:35:34 r9950 kded6[3697]: kf.notifications: Failed to notify "Created too many similar notifications in quick succession"
Sep 29 12:35:34 r9950 org_kde_powerdevil[3807]: [142260] Removing connected display on bus 9
Sep 29 12:35:34 r9950 org_kde_powerdevil[3807]: [142260] (dw_remove_display_by_businfo) No Display_Ref found for i2c bus: 9
Sep 29 12:35:36 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::DrmOutput(0x55b19a6a0010, name="DP-2", geometry=QRect(0,0 3840x2160), scale=1)
Sep 29 12:35:36 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:36 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:36 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:36 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:36 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:36 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 12:35:36 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 12:35:36 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 12:35:36 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 12:35:36 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 12:35:36 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 12:35:36 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 12:35:36 r9950 org_kde_powerdevil[3807]: [142260] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 12:35:36 r9950 kded6[3697]: kf.notifications: Failed to notify "Created too many similar notifications in quick succession"
Sep 29 12:35:36 r9950 org_kde_powerdevil[3807]: [142260] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142260] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142260] Adding connected display with bus 9
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142260] Emitting DDCA_Display_Status_Event[11064.799:  DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-2, dref: DDCA_Display_Ref[8], io_path:/dev/i2c-9, ddc working: false]
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142260] Starting 1 callback threads
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142260] libddcutil callback thread 0x7fac3c00c130 started
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142260] Started 1 event callback thread(s)
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [310232] Invoking callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[11064.799:  DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-2, dref: DDCA_Display_Ref[8], io_path:/dev/i2c-9, ddc working: false] in this thread [310232]
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [310232] Callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[11064.799:  DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-2, dref: DDCA_Display_Ref[8], io_path:/dev/i2c-9, ddc working: false] complete
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [  3807] Quiescing libddcutil API...
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [  3807] Quiesce libddcutil API complete
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [  3807] Display redetection starting.
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142259] ddc became enabled for Display_Ref[8:bus /dev/i2c-9 @0x7fac3c0231e0] after 0 milliseconds
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142259] Emitting DDCA_Display_Status_Event[11064.799:  DDCA_EVENT_DDC_ENABLED, card1-DP-2, dref: DDCA_Display_Ref[8], io_path:/dev/i2c-9, ddc working: false]
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142259] Starting 1 callback threads
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142259] libddcutil callback thread 0x7fac44019020 started
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142259] Started 1 event callback thread(s)
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [142259] recheck thread terminating because watch thread terminated
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [310233] Invoking callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[11064.799:  DDCA_EVENT_DDC_ENABLED, card1-DP-2, dref: DDCA_Display_Ref[8], io_path:/dev/i2c-9, ddc working: false] in this thread [310233]
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [310233] Callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[11064.799:  DDCA_EVENT_DDC_ENABLED, card1-DP-2, dref: DDCA_Display_Ref[8], io_path:/dev/i2c-9, ddc working: false] complete
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [  3807] Watch thread terminated.
Sep 29 12:35:37 r9950 org_kde_powerdevil[3807]: [  3807] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] Watching for display connection changes, resolved watch mode = Watch_Mode_Xevent, poll loop interval = 100 millisec
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807]                                          extra_stabilization_millisec: 0,  stabilization_poll_millisec: 100
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] libddcutil recheck thread 0x561756448060 started
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] libddcutil watch thread 0x561756492fe0 started
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] Display redetection finished.
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [  3807] Unquiescing libddcutil API...
Sep 29 12:35:38 r9950 org_kde_powerdevil[3807]: [310258] (dw_recheck_displays_func) Recheck interval: Sleeping for 200 milliseconds
Sep 29 12:35:42 r9950 kwin_wayland_wrapper[284707]: warning: queue "mesa egl surface queue" 0x5584fa7f11f0 destroyed while proxies still attached:
Sep 29 12:35:42 r9950 kwin_wayland_wrapper[284707]:   wp_presentation#36 still attached
Sep 29 12:35:42 r9950 kscreenlocker_greet[284707]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000)
Sep 29 12:35:42 r9950 kscreenlocker_greet[284707]: Failed to write to the pipe: Bad file descriptor.
Sep 29 12:36:13 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:36:13 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:20 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:20 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:24 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:24 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:27 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:27 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:37:27 r9950 rtkit-daemon[2172]: Successfully made thread 313308 of process 309704 owned by '1000' RT at priority 10.
Sep 29 12:37:27 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:38:17 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:38:17 r9950 rtkit-daemon[2172]: Supervising 11 threads of 7 processes of 1 users.
Sep 29 12:38:17 r9950 rtkit-daemon[2172]: Successfully made thread 314660 of process 35566 owned by '1000' RT at priority 10.
Sep 29 12:38:17 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:38:27 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:38:27 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:38:39 r9950 wireplumber[3592]: wp-event-dispatcher: <WpAsyncEventHook:0x562b55ab0590> failed: failed to activate item: Object activation aborted: proxy destroyed
Sep 29 12:39:23 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:39:23 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:40:11 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:40:11 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:41:21 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:41:21 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:42:45 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:42:45 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:43:09 r9950 wireplumber[3592]: wp-event-dispatcher: <WpAsyncEventHook:0x562b55ab0590> failed: failed to activate item: Object activation aborted: proxy destroyed
Sep 29 12:43:54 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:43:54 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:04 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:04 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:31 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:31 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:31 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:31 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:47 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:47 r9950 rtkit-daemon[2172]: Supervising 12 threads of 8 processes of 1 users.
Sep 29 12:44:47 r9950 rtkit-daemon[2172]: Successfully made thread 325363 of process 316396 owned by '1000' RT at priority 10.
Sep 29 12:44:47 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:45:08 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:45:08 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:46:32 r9950 firefox[22395]: [GFX1-]: RenderCompositorSWGL failed mapping default framebuffer, no dt
Sep 29 12:47:45 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:47:45 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:49:26 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:49:26 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:50:16 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:50:16 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:52:46 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:52:46 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:54:59 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:54:59 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:57:46 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 12:57:46 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:04:28 r9950 dbus-broker[1928]: A security policy denied :1.32 to send method call /org/freedesktop/login1/seat/seat0:org.freedesktop.login1.Seat.Inhibit to org.freedesktop.login1.
Sep 29 13:04:28 r9950 kwin_wayland[3530]: kwin_core: Failed to delay sleep: Sender is not authorized to send message
Sep 29 13:04:39 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:04:39 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:04:51 r9950 dbus-broker[1928]: A security policy denied :1.32 to send method call /org/freedesktop/login1/seat/seat0:org.freedesktop.login1.Seat.Inhibit to org.freedesktop.login1.
Sep 29 13:04:51 r9950 kwin_wayland[3530]: kwin_core: Failed to delay sleep: Sender is not authorized to send message
Sep 29 13:05:12 r9950 kactivitymanagerd[3802]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 ksecretd[3336]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:12 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:12 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:12 r9950 flameshot[3981]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 kdeconnectd[3982]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 polkit-kde-authentication-agent-1[3806]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 kded6[3697]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 python[3980]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 29 13:05:12 r9950 keepassxc[4155]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 29 13:05:12 r9950 yakuake[3987]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 chromium[22397]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 kwalletd6[22790]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 13:05:12 r9950 kscreenlocker_greet[356433]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 13:05:12 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 13:05:12 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::PlaceholderOutput(0x55b19a68e4e0, name="Placeholder-1", geometry=QRect(0,0 1920x1080), scale=1)
Sep 29 13:05:12 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::PlaceholderOutput(0x55b19a68e4e0, name="Placeholder-1", geometry=QRect(0,0 1920x1080), scale=1)
Sep 29 13:05:12 r9950 xdg-desktop-portal-kde[4057]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 plasmashell[3763]: kde.plasmashell: requesting unexisting screen available rect -1
Sep 29 13:05:12 r9950 org_kde_powerdevil[3807]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 plasmashell[3763]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:05:12 r9950 plasmashell[3763]: kf.plasma.quick: Exposed with no visual parent. Window positioning broken.
Sep 29 13:05:12 r9950 kded6[3697]: kf.notifications: Failed to notify "Created too many similar notifications in quick succession"
Sep 29 13:05:13 r9950 org_kde_powerdevil[3807]: [310259] Removing connected display on bus 9
Sep 29 13:05:13 r9950 org_kde_powerdevil[3807]: [310259] (dw_remove_display_by_businfo) No Display_Ref found for i2c bus: 9
Sep 29 13:05:14 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::DrmOutput(0x55b19a6ae490, name="DP-2", geometry=QRect(0,0 3840x2160), scale=1)
Sep 29 13:05:14 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:14 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:14 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:14 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:14 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:14 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:05:14 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 13:05:14 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 13:05:14 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 13:05:14 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 13:05:14 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 13:05:14 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 13:05:14 r9950 org_kde_powerdevil[3807]: [310259] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 13:05:14 r9950 kded6[3697]: kf.notifications: Failed to notify "Created too many similar notifications in quick succession"
Sep 29 13:05:14 r9950 org_kde_powerdevil[3807]: [310259] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310259] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310259] Adding connected display with bus 9
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310259] Emitting DDCA_Display_Status_Event[12842.968:  DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-2, dref: DDCA_Display_Ref[10], io_path:/dev/i2c-9, ddc working: false]
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310259] Starting 1 callback threads
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310259] libddcutil callback thread 0x7fac4402fbc0 started
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310259] Started 1 event callback thread(s)
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [358408] Invoking callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[12842.968:  DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-2, dref: DDCA_Display_Ref[10], io_path:/dev/i2c-9, ddc working: false] in this thread [358408]
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [358408] Callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[12842.968:  DDCA_EVENT_DISPLAY_CONNECTED, card1-DP-2, dref: DDCA_Display_Ref[10], io_path:/dev/i2c-9, ddc working: false] complete
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [  3807] Quiescing libddcutil API...
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [  3807] Quiesce libddcutil API complete
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [  3807] Display redetection starting.
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310258] ddc became enabled for Display_Ref[10:bus /dev/i2c-9 @0x7fac4401a3c0] after 0 milliseconds
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310258] Emitting DDCA_Display_Status_Event[12842.968:  DDCA_EVENT_DDC_ENABLED, card1-DP-2, dref: DDCA_Display_Ref[10], io_path:/dev/i2c-9, ddc working: false]
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310258] Starting 1 callback threads
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310258] libddcutil callback thread 0x7fac3c015e50 started
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310258] Started 1 event callback thread(s)
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [310258] recheck thread terminating because watch thread terminated
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [358409] Invoking callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[12842.968:  DDCA_EVENT_DDC_ENABLED, card1-DP-2, dref: DDCA_Display_Ref[10], io_path:/dev/i2c-9, ddc working: false] in this thread [358409]
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [358409] Callback function 0x7fac6cb44050 for event DDCA_Display_Status_Event[12842.968:  DDCA_EVENT_DDC_ENABLED, card1-DP-2, dref: DDCA_Display_Ref[10], io_path:/dev/i2c-9, ddc working: false] complete
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [  3807] Watch thread terminated.
Sep 29 13:05:15 r9950 org_kde_powerdevil[3807]: [  3807] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 13:05:16 r9950 org_kde_powerdevil[3807]: [  3807] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 13:05:16 r9950 org_kde_powerdevil[3807]: [  3807] (i2c_detect_x37) Extra x37 sleep: Sleeping for 400 milliseconds
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [  3807] Watching for display connection changes, resolved watch mode = Watch_Mode_Xevent, poll loop interval = 100 millisec
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [  3807]                                          extra_stabilization_millisec: 0,  stabilization_poll_millisec: 100
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [  3807] libddcutil recheck thread 0x561756453360 started
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [  3807] libddcutil watch thread 0x56175653d620 started
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [  3807] Display redetection finished.
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [  3807] Unquiescing libddcutil API...
Sep 29 13:05:17 r9950 org_kde_powerdevil[3807]: [358437] (dw_recheck_displays_func) Recheck interval: Sleeping for 200 milliseconds
Sep 29 13:05:19 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:05:19 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:05:27 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:05:27 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:05:34 r9950 dbus-broker[1928]: A security policy denied :1.32 to send method call /org/freedesktop/login1/seat/seat0:org.freedesktop.login1.Seat.Inhibit to org.freedesktop.login1.
Sep 29 13:05:34 r9950 kwin_wayland[3530]: kwin_core: Failed to delay sleep: Sender is not authorized to send message
Sep 29 13:07:47 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:07:47 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:10:24 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:10:24 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:12:47 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:12:47 r9950 rtkit-daemon[2172]: Supervising 13 threads of 9 processes of 1 users.
Sep 29 13:14:07 r9950 ksecretd[3336]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 kscreenlocker_greet[356433]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 kded6[3697]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::PlaceholderOutput(0x55b19a68e4e0, name="Placeholder-1", geometry=QRect(0,0 1920x1080), scale=1)
Sep 29 13:14:07 r9950 kwin_wayland[3530]: kwin_xwl: Could not find a matching X RandR CRTC/output to set as primary for KWin::PlaceholderOutput(0x55b19a68e4e0, name="Placeholder-1", geometry=QRect(0,0 1920x1080), scale=1)
Sep 29 13:14:07 r9950 plasmashell[3763]: kde.plasmashell: requesting unexisting screen available rect -1
Sep 29 13:14:07 r9950 kactivitymanagerd[3802]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 polkit-kde-authentication-agent-1[3806]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 yakuake[3987]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 keepassxc[4155]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 29 13:14:07 r9950 flameshot[3981]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 python[3980]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash
Sep 29 13:14:07 r9950 kdeconnectd[3982]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 kwalletd6[22790]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 xdg-desktop-portal-kde[4057]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 chromium[22397]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 plasmashell[3763]: qt.qpa.wayland: There are no outputs - creating placeholder screen
Sep 29 13:14:07 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:14:07 r9950 kernel: kwin_wayland[3530]: segfault at 1a5f0018000b ip 00007f394a1b8b1b sp 00007ffe943236f0 error 4 in libQt6Core.so.6.9.2[1b8b1b,7f394a08f000+3de000] likely on CPU 15 (core 15, socket 0)
Sep 29 13:14:07 r9950 firefox[22395]: Couldn't map window 0x7fdf0e50cde0 as subsurface because its parent is not mapped.
Sep 29 13:14:07 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:14:07 r9950 firefox[22395]: [Parent 22395, Main Thread] WARNING: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-143.0.1/toolkit/xre/nsSigHandlers.cpp:201
Sep 29 13:14:07 r9950 kernel: Code: ef c0 48 c7 00 00 00 00 00 48 c7 40 18 00 00 00 00 48 c7 40 20 00 00 00 00 0f 11 40 08 f0 83 40 04 01 49 89 45 60 4d 8b 6d 60 <4d> 8b 75 08 4d 85 f6 0f 84 f8 01 00 00 49 8b 56 08 41 8d 44 24 01
Sep 29 13:14:07 r9950 firefox[22395]: Couldn't map window 0x7fdf0a64bb20 as subsurface because its parent is not mapped.
Sep 29 13:14:07 r9950 firefox[22395]: Couldn't map window 0x7fdf07f97580 as subsurface because its parent is not mapped.
Sep 29 13:14:07 r9950 systemd-coredump[372134]: Process 3530 (kwin_wayland) of user 1000 terminated abnormally with signal 11/SEGV, processing...
Sep 29 13:14:07 r9950 systemd[1]: Created slice Slice /system/systemd-coredump.
Sep 29 13:14:07 r9950 systemd[1]: Started Process Core Dump (PID 372134/UID 0).
Comment 1 TraceyC 2025-09-29 20:41:32 UTC 
The backtrace shares a lot in common with bug 508555
Comment 2 Akseli Lahtinen 2025-09-30 08:32:15 UTC 

*** This bug has been marked as a duplicate of bug 495702 ***