Application: kded4 ($Id$)
KDE Platform Version: 4.6.5 (4.6.5)
Qt Version: 4.7.4
Operating System: Linux 3.2.0-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
When I log in KDE after each reboot, the KDE Daemon crashes while a notification appears with message
> The audio playback device Jack Audio Connection Kit does not work.
> Falling back to ALSA default output.

(Then, if I log out and log in again without rebooting, kdeinit4 does not crash but the background of all windows is ugly.)

The crash can be reproduced every time.

-- Backtrace:
Application: KDE Daemon (kdeinit4), signal: Aborted
[Current thread is 1 (Thread 0x7fb9d715f760 (LWP 1878))]

Thread 4 (Thread 0x7fb9ba072700 (LWP 1881)):
#0  0x00007fb9d49e1cc3 in *__GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb9d1a0e5d8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb9d1a0ea99 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb9d5dcde96 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007fb9d5da2492 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007fb9d5da268f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007fb9d5cba30f in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007fb9d5cbccf5 in QThreadPrivate::start(void*) () from /usr/lib/libQtCore.so.4
#8  0x00007fb9c8de62da in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#9  0x00007fb9d24deb50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#10 0x00007fb9d49ec90d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fb9b9871700 (LWP 1886)):
#0  0x00007fb9d24e262e in __pthread_mutex_unlock_usercnt (mutex=0xaa6278, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  0x00007fb9d1a0d664 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb9d1a0e46d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb9d1a0ea99 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb9d5dcde96 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007fb9d5da2492 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007fb9d5da268f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#7  0x00007fb9d5cba30f in QThread::exec() () from /usr/lib/libQtCore.so.4
#8  0x00007fb9d5d8535f in QInotifyFileSystemWatcherEngine::run() () from /usr/lib/libQtCore.so.4
#9  0x00007fb9d5cbccf5 in QThreadPrivate::start(void*) () from /usr/lib/libQtCore.so.4
#10 0x00007fb9c8de62da in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#11 0x00007fb9d24deb50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#12 0x00007fb9d49ec90d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb9b1344700 (LWP 2049)):
#0  __pthread_mutex_unlock_usercnt (mutex=0xb90f98, decr=1) at pthread_mutex_unlock.c:49
#1  0x00007fb9d1a0d664 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb9d1a0e46d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb9d1a0ee02 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb9b1626dc6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007fb9d1a337e6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb9c8de62da in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#7  0x00007fb9d24deb50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#8  0x00007fb9d49ec90d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb9d715f760 (LWP 1878)):
[KCrash Handler]
#6  0x00007fb9d4946475 in *__GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007fb9d49496f0 in *__GI_abort () at abort.c:92
#8  0x00007fb9d493f621 in *__GI___assert_fail (assertion=0x7fb9ae18b85e "elem", file=<optimized out>, line=764, function=0x7fb9ae1891a0 "snd_hctl_handle_event") at assert.c:81
#9  0x00007fb9ae110b20 in snd_hctl_handle_event (event=0x7ffffbb7ad50, hctl=0xd17010) at hcontrol.c:764
#10 snd_hctl_handle_events (hctl=0xd17010) at hcontrol.c:793
#11 0x00007fb9ae11bd29 in snd_mixer_handle_events (mixer=0xd1def0) at mixer.c:847
#12 0x00007fb9ae3d22b9 in ?? () from /usr/lib/kde4/kded_kmixd.so
#13 0x00007fb9ae3e85d7 in ?? () from /usr/lib/kde4/kded_kmixd.so
#14 0x00007fb9ae3e853d in ?? () from /usr/lib/kde4/kded_kmixd.so
#15 0x00007fb9d5db5eba in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x00007fb9d5dff42e in QSocketNotifier::activated(int) () from /usr/lib/libQtCore.so.4
#17 0x00007fb9d5dbdb6b in QSocketNotifier::event(QEvent*) () from /usr/lib/libQtCore.so.4
#18 0x00007fb9d5174c64 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x00007fb9d5179af1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00007fb9d6b4cb96 in KApplication::notify (this=0x7ffffbb7b8f0, receiver=0xcbbd00, event=0x7ffffbb7b640) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x00007fb9d5da328c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x00007fb9d5dcd557 in socketNotifierSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/libQtCore.so.4
#23 0x00007fb9d1a0e0cf in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fb9d1a0e8c8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fb9d1a0ea99 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fb9d5dcde2f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#27 0x00007fb9d5218eee in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtGui.so.4
#28 0x00007fb9d5da2492 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0x00007fb9d5da268f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0x00007fb9d5da6837 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#31 0x00007fb9c22ae1f5 in kdemain (argc=1, argv=0x9458b0) at ../../kded/kded.cpp:925
#32 0x0000000000408a2a in launch (argc=1, _name=0x40b52e "kded4", args=<optimized out>, cwd=0x0, envc=<optimized out>, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40b3b6 "0") at ../../kinit/kinit.cpp:746
#33 0x0000000000405ffa in main (argc=4, argv=0x7fff00000001, envp=0x7ffffbb7cac0) at ../../kinit/kinit.cpp:1861

Possible duplicates by query: bug 294003, bug 293882, bug 293565, bug 289949, bug 288402.

Reported using DrKonqi