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Bug#906290: kde-full: several KDE applications hang shortly after start

Package: kde-full
Version: 5:102
Followup-For: Bug #906290

Dear Maintainer,

Here are backtraces for three hung applications.  Look the same to me...

KMail:

(gdb) bt
#0  0x00007f4fc412d06c in  () at /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/qtcurve.so
#1  0x00007f4fc4104deb in  () at /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/qtcurve.so
#2  0x00007f4ff2f6f28b in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f4ff38c8491 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#4  0x00007f4ff38cfd28 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5  0x00007f4ff2f6f579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4ff38cf029 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f4ff3921304 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f4ff3923e8e in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f4ff38c84a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f4ff38cfae0 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f4ff2f6f579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f4ff330e53b in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f4ff3310435 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007f4ff32eab6b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f4fc9197e5b in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#16 0x00007f4ff2f6e24b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f4ff2f763c2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-
gnu/libQt5Core.so.5
#18 0x000055621cd177cd in  ()
#19 0x00007f4ff29e6b17 in __libc_start_main (main=0x55621cd16840, argc=1,
argv=0x7fffc112a818, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffc112a808) at ../csu/libc-start.c:310
#20 0x000055621cd178fa in _start ()
(gdb)

------------------------------------------------------

KPat:

(gdb) bt
#0  0x00007fa27e1b0040 in ?? () from /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/qtcurve.so
#1  0x00007fa27e187deb in ?? () from /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/qtcurve.so
#2  0x00007fa292c9a28b in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa293ab0491 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#4  0x00007fa293ab7d28 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5  0x00007fa292c9a579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa293ab7029 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007fa293b09304 in ?? () from /usr/lib/x86_64-linux-
gnu/libQt5Widgets.so.5
#8  0x00007fa293b0be8e in ?? () from /usr/lib/x86_64-linux-
gnu/libQt5Widgets.so.5
#9  0x00007fa293ab04a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fa293ab7ae0 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fa292c9a579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fa29307853b in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007fa29307a435 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007fa293054b6b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007fa2883aee5b in ?? () from /usr/lib/x86_64-linux-
gnu/libQt5XcbQpa.so.5
#16 0x00007fa292c9924b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fa292ca13c2 in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x000055a0a16a5086 in ?? ()
#19 0x00007fa29257bb17 in __libc_start_main (main=0x55a0a16a33d0, argc=1,
argv=0x7ffdfbe91498, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffdfbe91488) at ../csu/libc-start.c:310
#20 0x000055a0a16a5cba in _start ()
(gdb)

---------------------------------------------------------

Konqueror:

(gdb) bt
#0  0x00007f9c5c696054 in ?? () from /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/qtcurve.so
#1  0x00007f9c5c66ddeb in ?? () from /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/qtcurve.so
#2  0x00007f9c7239828b in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f9c72f49491 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#4  0x00007f9c72f50d28 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5  0x00007f9c72398579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9c72f50029 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f9c72fa2304 in ?? () from /usr/lib/x86_64-linux-
gnu/libQt5Widgets.so.5
#8  0x00007f9c72fa4e8e in ?? () from /usr/lib/x86_64-linux-
gnu/libQt5Widgets.so.5
#9  0x00007f9c72f494a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f9c72f50ae0 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f9c72398579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f9c7298853b in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f9c7298a435 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007f9c72964b6b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f9c66ebae5b in ?? () from /usr/lib/x86_64-linux-
gnu/libQt5XcbQpa.so.5
#16 0x00007f9c7239724b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f9c7239f3c2 in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f9c76ebc6c4 in kdemain () from /usr/lib/x86_64-linux-
gnu/libkdeinit5_konqueror.so
#19 0x00007f9c76c4cb17 in __libc_start_main (main=0x5633e0511780, argc=1,
argv=0x7ffe7f394fb8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffe7f394fa8) at ../csu/libc-start.c:310
#20 0x00005633e05117ba in _start ()
(gdb)



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.17.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages kde-full depends on:
ii  kde-plasma-desktop           5:102
ii  kde-standard                 5:102
ii  kdeadmin                     4:17.08.3+5.102
ii  kdeedu                       4:17.08.3+5.102
ii  kdegames                     4:17.08.3+5.102
ii  kdegraphics                  4:17.08.3+5.102
ii  kdemultimedia                4:17.08.3+5.102
ii  kdenetwork                   4:17.08.3+5.102
ii  kdepim                       4:17.12.3+5.102
ii  kdeutils                     4:17.08.3+5.102
ii  plasma-workspace-wallpapers  4:5.13.1-1

Versions of packages kde-full recommends:
ii  kdeaccessibility  4:17.08.3+5.102
ii  kdesdk            4:17.08.3+5.102
ii  kdetoys           4:17.08.3+5.102
ii  kdewebdev         4:17.08.3+5.102

Versions of packages kde-full suggests:
pn  calligra  <none>
ii  xorg      1:7.7+19

-- no debconf information
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