Bug 460051

Summary: Start window flickers
Product: [Plasma] kwin Reporter: Ferdaus <ferdausalamin>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: normal CC: kde
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Ferdaus 2022-10-06 13:46:32 UTC
SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT
At start the display flickers, and does so continuously

EXPECTED RESULT
Stable screen and a panel display

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
Application: kwin_x11 (5.24.6)

Qt Version: 5.15.3
Frameworks Version: 5.92.0
Operating System: Linux 5.15.0-48-generic x86_64
Windowing System: X11
Distribution: Ubuntu 22.04.1 LTS
DrKonqi: 5.24.5 [KCrashBackend]

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault

[KCrash Handler]
#4  0x0000000000000000 in  ()
#5  0x00007f33c621be39 in ChameleonConfig::setTheme(QString) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/libdeepin-chameleon.so
#6  0x00007f33c621bfe3 in ChameleonConfig::onConfigChanged() () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/libdeepin-chameleon.so
#7  0x00007f33f6aa0793 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f33f876c0de in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libdde-kwin-xcb.so
#9  0x00007f33f6aa07c8 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x0000555cdeee451e in  ()
#11 0x00007f33f6aa0793 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f33f65b6f43 in  () at /lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#13 0x00007f33f6a9633f in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f33f603f713 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f33f6a68e3a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f33f6ac13eb in QTimerInfoList::activateTimers() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f33f6abf8a7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f33f0145142 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#19 0x00007f33f6a6775b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f33f6a6fcf4 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x0000555cdeee0bad in  ()
#22 0x00007f33f590fd90 in __libc_start_call_main (main=main@entry=0x555cdeee0770, argc=argc@entry=5, argv=argv@entry=0x7ffd60c4e0b8) at ../sysdeps/nptl/libc_start_call_main.h:58
#23 0x00007f33f590fe40 in __libc_start_main_impl (main=0x555cdeee0770, argc=5, argv=0x7ffd60c4e0b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd60c4e0a8) at ../csu/libc-start.c:392
#24 0x0000555cdeee1eb5 in  ()
[Inferior 1 (process 22714) detached]

Report to https://bugs.kde.org/
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 David Edmundson 2022-10-06 13:58:33 UTC
>#5  0x00007f33c621be39 in ChameleonConfig::setTheme(QString) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/libdeepin-chameleon.so

This crash is in external code