Application that crashed: kmix
Version of the application: 3.5
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.2
Operating System: Linux 2.6.30-10-generic x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
Chrashes on startup or when I use volume up or down
alsamixer doesn't start either, but give me the following error message:
alsamixer: function snd_ctl_open failed for default: No such file or directory

 -- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
[KCrash Handler]
#5  KMixWindow::increaseOrDecreaseVolume (this=0x2239920, increase=false) at ../../kmix/volume.h:130
#6  0x00007f2bb30d9c0c in KMixWindow::qt_metacall (this=0x2239920, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff9ab7e1d0) at ./kmix.moc:109
#7  0x00007f2bb0586e1c in QMetaObject::activate (sender=0x2254d40, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#8  0x00007f2bb10f47d7 in QAction::triggered (this=0x7f2bb30b5a00, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#9  0x00007f2bb10f5c1f in QAction::activate (this=0x2254d40, event=<value optimized out>) at kernel/qaction.cpp:1160
#10 0x00007f2bb2298c84 in KGlobalAccelPrivate::_k_invokeAction (this=<value optimized out>, actionId=<value optimized out>, timestamp=385860) at /usr/include/qt4/QtGui/qaction.h:203
#11 0x00007f2bb229cfd4 in KGlobalAccel::qt_metacall (this=0x224b9a0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff9ab7e3f0) at ./kglobalaccel.moc:70
#12 0x00007f2bb0586e1c in QMetaObject::activate (sender=0x2239b58, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#13 0x00007f2bb239d694 in OrgKdeKGlobalAccelInterface::invokeAction (this=0x7f2bb30b5a00, _t1=<value optimized out>, _t2=385860) at kglobalaccel_interface.moc:152
#14 0x00007f2bb239d9c3 in OrgKdeKGlobalAccelInterface::qt_metacall (this=0x2239b58, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff9ab7eb50) at kglobalaccel_interface.moc:109
#15 0x00007f2bb0888af4 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=@0x2144390, 
    slotIdx=<value optimized out>) at qdbusintegrator.cpp:891
#16 0x00007f2bb088fe0f in QDBusCallDeliveryEvent::placeMetaCall (this=0x0, object=0x7f2bb2e84738) at qdbusintegrator_p.h:101
#17 0x00007f2bb0581139 in QObject::event (this=0x2239b58, e=0x2144340) at kernel/qobject.cpp:1111
#18 0x00007f2bb10fa62c in QApplicationPrivate::notify_helper (this=0x216fcb0, receiver=0x2239b58, e=0x2144340) at kernel/qapplication.cpp:4056
#19 0x00007f2bb11018fe in QApplication::notify (this=0x213e7f0, receiver=0x2239b58, e=0x2144340) at kernel/qapplication.cpp:4021
#20 0x00007f2bb2255c16 in KApplication::notify (this=0x213e7f0, receiver=0x2239b58, event=0x2144340) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x00007f2bb0571c6c in QCoreApplication::notifyInternal (this=0x213e7f0, receiver=0x2239b58, event=0x2144340) at kernel/qcoreapplication.cpp:610
#22 0x00007f2bb057284a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x2124ff0)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 0x00007f2bb059a583 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#24 0x00007f2bad6d38fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#25 0x00007f2bad6d6fd8 in ?? () from /usr/lib/libglib-2.0.so.0
#26 0x00007f2bad6d7100 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#27 0x00007f2bb059a1f6 in QEventDispatcherGlib::processEvents (this=0x2124800, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#28 0x00007f2bb118eace in QGuiEventDispatcherGlib::processEvents (this=0x7f2bb30b5a00, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#29 0x00007f2bb0570572 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#30 0x00007f2bb0570944 in QEventLoop::exec (this=0x7fff9ab7f440, flags=) at kernel/qeventloop.cpp:201
#31 0x00007f2bb0572af9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#32 0x00007f2bb30d69c2 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../kmix/main.cpp:71
#33 0x00007f2bb2d665e6 in __libc_start_main (main=0x400720 <main>, argc=1, ubp_av=0x7fff9ab7f978, init=0x400750 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fff9ab7f968) at libc-start.c:220
#34 0x0000000000400659 in _start () at ../sysdeps/x86_64/elf/start.S:113

Reported using DrKonqi