Application: kmix (4)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
Initially I thought it was related to the flash(when i watch youtube), but now i have no idea
also the x server restarts randomly!

The crash can be reproduced every time.

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fce0570f780 (LWP 4423))]

Thread 3 (Thread 0x7fcde5654700 (LWP 4425)):
#0  0x00007fce04fd0b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fcdfaddcff6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcdfaddd124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce01d57426 in QEventDispatcherGlib::processEvents (this=0x7fcde00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fce01d26c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fce01d26ed7 in QEventLoop::exec (this=0x7fcde5653dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fce01c25fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fce01d069ff in QInotifyFileSystemWatcherEngine::run (this=0x26c9480) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fce01c28fcb in QThreadPrivate::start (arg=0x26c9480) at thread/qthread_unix.cpp:298
#9  0x00007fcdfb943e9a in start_thread (arg=0x7fcde5654700) at pthread_create.c:308
#10 0x00007fce04fdc4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fcde4c47700 (LWP 4426)):
#0  0x00007fce04fcf0bd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fcdfae1788f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcdfaddcabd in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcdfaddcf96 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcdfaddd124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fce01d57426 in QEventDispatcherGlib::processEvents (this=0x7fcdd40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fce01d26c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fce01d26ed7 in QEventLoop::exec (this=0x7fcde4c46dd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fce01c25fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007fce01d069ff in QInotifyFileSystemWatcherEngine::run (this=0x251b390) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007fce01c28fcb in QThreadPrivate::start (arg=0x251b390) at thread/qthread_unix.cpp:298
#11 0x00007fcdfb943e9a in start_thread (arg=0x7fcde4c47700) at pthread_create.c:308
#12 0x00007fce04fdc4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fce0570f780 (LWP 4423)):
[KCrash Handler]
#6  0x00007fce052fce23 in MDWSlider::update (this=0x2767990) at ../../kmix/gui/mdwslider.cpp:1001
#7  0x00007fce052f864b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at ../../kmix/gui/viewdockareapopup.cpp:168
#8  0x00007fce01d3c281 in QMetaObject::activate (sender=0x2707990, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#9  0x00007fce01d3c281 in QMetaObject::activate (sender=0x2708b20, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#10 0x00007fce052d1b0c in Mixer_Backend::readSetFromHW (this=0x2708b20) at ../../kmix/backends/mixer_backend.cpp:155
#11 0x00007fce052e1df5 in sink_cb (c=<optimized out>, i=<optimized out>, eol=<optimized out>) at ../../kmix/backends/mixer_pulse.cpp:191
#12 0x00007fce036b9944 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#13 0x00007fcdfb2fb693 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#14 0x00007fcdfb2fba03 in pa_pdispatch_run () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#15 0x00007fce036afbdd in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#16 0x00007fcdfb3002a9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#17 0x00007fce0349dab3 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0
#18 0x00007fcdfaddcc9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fcdfaddd060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fcdfaddd124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fce01d573bf in QEventDispatcherGlib::processEvents (this=0x232aad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007fce02a41d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007fce01d26c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007fce01d26ed7 in QEventLoop::exec (this=0x7fffe3ee6ff0, flags=...) at kernel/qeventloop.cpp:204
#25 0x00007fce01d2bf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#26 0x00007fce052e93e2 in kdemain (argc=3, argv=0x7fffe3ee7578) at ../../kmix/apps/main.cpp:76
#27 0x00007fce04f0b76d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=3, ubp_av=0x7fffe3ee7578, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe3ee7568) at libc-start.c:226
#28 0x0000000000400661 in _start ()

Possible duplicates by query: bug 300695, bug 300684, bug 300681, bug 300666, bug 300663.

Reported using DrKonqi