Bug#974212: kwin-x11 crashes, windows missing decorations
Hello
I have similar behaviour and I have managed to capture the backtrace from the fault (below).
Let me know if I can help with anything else.
Thanks
Tim
---- Backtrace ----
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4bf57d78c0 (LWP 143875))]
Thread 4 (Thread 0x7f4beebe8700 (LWP 143888)):
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7f4beebe7c50, clockid=-289506352,
expected=0, futex_word=0x55f64fc93484) at ../sysdeps/nptl/futex-internal.h:320
#1 __pthread_cond_wait_common (abstime=0x7f4beebe7c50, clockid=-289506352, mutex=0x55f64fc93430,
cond=0x55f64fc93458) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x55f64fc93458, mutex=0x55f64fc93430, abstime=0x7f4beebe7c50) at
pthread_cond_wait.c:656
#3 0x00007f4bfbc52aa4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f4bfbc50ae1 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f4bfbc4cb01 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f4bfb06aea7 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7 0x00007f4bfd3ead4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f4beffff700 (LWP 143880)):
#0 0x00007f4bfd3e0456 in __ppoll (fds=0x7f4be800d0b8, nfds=1, timeout=<optimized out>, sigmask=0x0)
at ../sysdeps/unix/sysv/linux/ppoll.c:44
#1 0x00007f4bfbe7f779 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f4bfbe80e13 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f4bfbe2ab7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f4bfbc4b9be in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f4bfa18ba27 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007f4bfbc4cb01 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f4bfb06aea7 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8 0x00007f4bfd3ead4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f4bf50d7700 (LWP 143878)):
#0 0x00007f4bfd3e035f in __GI___poll (fds=0x7f4bf50d6be8, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f4bfbb62d02 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2 0x00007f4bfbb6498a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3 0x00007f4bf53f4260 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4 0x00007f4bfbc4cb01 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f4bfb06aea7 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6 0x00007f4bfd3ead4f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f4bf57d78c0 (LWP 143875)):
[KCrash Handler]
#4 0x00007f4bfbccdef0 in QString::operator=(QString const&) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f4bfd0fd10c in ?? () from /lib/x86_64-linux-gnu/libkwin.so.5
#6 0x00007f4bee034910 in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/breezedecoration.so
#7 0x00007f4bee0387f9 in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/breezedecoration.so
#8 0x00007f4bee038a28 in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/breezedecoration.so
#9 0x00007f4bfd0fed52 in
KWin::Decoration::DecorationBridge::createDecoration(KWin::AbstractClient*) () from
/lib/x86_64-linux-gnu/libkwin.so.5
#10 0x00007f4bfd0d34cc in KWin::Client::createDecoration(QRect const&) () from
/lib/x86_64-linux-gnu/libkwin.so.5
#11 0x00007f4bfd0d7758 in KWin::Client::updateDecoration(bool, bool) () from
/lib/x86_64-linux-gnu/libkwin.so.5
#12 0x00007f4bfd16b246 in KWin::Client::manage(unsigned int, bool) () from
/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007f4bfd2079a5 in KWin::Workspace::createClient(unsigned int, bool) () from
/lib/x86_64-linux-gnu/libkwin.so.5
#14 0x00007f4bfd20ba1f in KWin::Workspace::initWithX11() () from /lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007f4bfd20cd51 in KWin::Workspace::init() () from /lib/x86_64-linux-gnu/libkwin.so.5
#16 0x00007f4bfd20d56d in KWin::Workspace::Workspace(QString const&) () from
/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f4bfd168054 in KWin::Application::createWorkspace() () from
/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007f4bfd4b9e6c in ?? () from /lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#19 0x00007f4bfbe62796 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f4bfd4ba2cc in ?? () from /lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#21 0x00007f4bfbe62796 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f4bfce44633 in ?? () from /lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#23 0x00007f4bfbe5811f in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f4bfc8ee14f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f4bfbe2c1ba in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f4bfbe82ad3 in QTimerInfoList::activateTimers() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f4bfbe80f67 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f4bf53f55fe in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#29 0x00007f4bfbe2ab7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f4bfbe32df0 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f4bfd4bb886 in kdemain () from /lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#32 0x00007f4bfd313cca in __libc_start_main (main=0x55f64f1b3050, argc=3, argv=0x7fff71ba2d08,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff71ba2cf8) at
../csu/libc-start.c:308
#33 0x000055f64f1b308a in _start ()
[Inferior 1 (process 143875) detached]
---- End of Backtrace ----
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