https://bugs.kde.org/show_bug.cgi?id=508622
Bug ID: 508622
Summary: KWin crashes on display disconnect
Classification: Plasma
Product: kwin
Version First 6.4.4
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Application: kwin_wayland (6.4.4)
ApplicationNotResponding [ANR]: false
Qt Version: 6.9.1
Frameworks Version: 6.17.0
Operating System: Linux 6.15.10-200.fc42.x86_64 x86_64
Windowing System: Wayland
Distribution: "Fedora release 42 (Adams)"
DrKonqi: 6.4.4 [CoredumpBackend]
-- Information about the crash:
Recently KWin has been crashing consistently when I disconnect my laptop from a
Thunderbolt 4 dock (with two 4K displays attached to the dock).
STEPS TO REPRODUCE
1. Start with laptop connected to Thunderbolt dock with two 4K displays
attached. The internal screen of the laptop is disabled and both of the
external screens are enabled.
2. Disconnect Thunderbolt dock by removing the cable.
OBSERVED BEHAVIOUR
Internal display re-enables and KWin crashes bringing down most desktop
application windows with it
EXPECTED BEHAVIOUR
Internal display re-enables and KWin does not crash
The crash can be reproduced every time.
-- Backtrace (Reduced):
#5 0x00007fd84cdd7569 in
KWin::ColorManagementOutputV1::ColorManagementOutputV1 (this=0x557db5408c50,
client=<optimized out>, id=<optimized out>, version=<optimized out>,
output=0x0) at
/usr/src/debug/kwin-6.4.4-1.fc42.x86_64/src/wayland/colormanagement_v1.cpp:580
#6 KWin::ColorManagerV1::wp_color_manager_v1_get_output (this=<optimized out>,
resource=<optimized out>, id=<optimized out>, output=<optimized out>) at
/usr/src/debug/kwin-6.4.4-1.fc42.x86_64/src/wayland/colormanagement_v1.cpp:63
#7 0x00007fd847eb0056 in ffi_call_unix64 () at ../src/x86/unix64.S:104
#8 0x00007fd847eabd08 in ffi_call_int (cif=cif@entry=0x7fffed24fba0,
fn=fn@entry=0x7fd84ceeed30
<QtWaylandServer::wp_color_manager_v1::handle_get_output(wl_client*,
wl_resource*, unsigned int, wl_resource*)>, rvalue=<optimized out>,
rvalue@entry=0x0, avalue=avalue@entry=0x7fffed24fc70,
closure=closure@entry=0x0) at ../src/x86/ffi64.c:673
#9 0x00007fd847eae70e in ffi_call (cif=cif@entry=0x7fffed24fba0,
fn=0x7fd84ceeed30
<QtWaylandServer::wp_color_manager_v1::handle_get_output(wl_client*,
wl_resource*, unsigned int, wl_resource*)>, rvalue=rvalue@entry=0x0,
avalue=avalue@entry=0x7fffed24fc70) at ../src/x86/ffi64.c:710
#10 0x00007fd84ae12440 in wl_closure_invoke
(closure=closure@entry=0x557db6aab360, target=<optimized out>,
target@entry=0x557db53934c0, opcode=opcode@entry=1, data=<optimized out>,
data@entry=0x557db5550760, flags=2) at ../src/connection.c:1241
#11 0x00007fd84ae17aa0 in wl_client_connection_data (fd=<optimized out>,
mask=<optimized out>, data=<optimized out>) at ../src/wayland-server.c:483
#12 0x00007fd84ae15f42 in wl_event_loop_dispatch (loop=0x7fd830008f00,
timeout=<optimized out>) at ../src/event-loop.c:1059
#13 0x00007fd84cde3c29 in KWin::Display::dispatchEvents (this=<optimized out>)
at /usr/src/debug/kwin-6.4.4-1.fc42.x86_64/src/wayland/display.cpp:138
#14 0x00007fd849d657ba in QtPrivate::QSlotObjectBase::call
(this=0x557db47e5d30, r=0x557db354d490, a=0x7fffed250280) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/kernel/qobjectdefs_impl.h:461
#15 doActivate<false> (sender=0x557db475f9f0, signal_index=3,
argv=argv@entry=0x7fffed250280) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/kernel/qobject.cpp:4146
[...]
#18 QSocketNotifier::activated (this=this@entry=0x557db475f9f0, _t1=...,
_t2=<optimized out>, _t3=...) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qsocketnotifier.cpp:161
#19 0x00007fd849d74d6b in QSocketNotifier::event (this=0x557db475f9f0,
e=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/kernel/qsocketnotifier.cpp:327
#20 0x00007fd84b03d97f in QApplicationPrivate::notify_helper (this=<optimized
out>, receiver=0x557db475f9f0, e=0x7fffed2503d0) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/widgets/kernel/qapplication.cpp:3303
#21 0x00007fd849cf9f38 in QCoreApplication::notifyInternal2
(receiver=0x557db475f9f0, event=0x7fffed2503d0) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/kernel/qcoreapplication.cpp:1106
#22 0x00007fd849cfa19d in QCoreApplication::sendEvent (receiver=<optimized
out>, event=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/kernel/qcoreapplication.cpp:1546
Reported using DrKonqi
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