Bug 292854

Summary: Amarok crashed after changing backend from xine to gstreamer
Product: [Applications] amarok Reporter: zohn.joidberg
Component: generalAssignee: Amarok Developers <amarok-bugs-dist>
Status: RESOLVED DUPLICATE    
Severity: crash CC: zohn.joidberg
Priority: NOR    
Version: 2.4.3   
Target Milestone: 2.6   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description zohn.joidberg 2012-01-30 10:19:12 UTC 
Application: amarok (2.4.3)
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-15-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
This bug sounds similar to bug #210427, but it is said to be fixed since v4.6 and I am using KDE 4.7.4.

- What I was doing when the application crashed:
1) Amarok was playing, but no sound came out
2) Opened the sound settings through the mixer applet
3) Went to backend and switched preferred backend from Xine to GStreamer
4) Applied the changes
5) Crash

System:
Ubuntu 11.10 with KDE 4.7.4 installed through repository packages

$  lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 11.10
Release:        11.10
Codename:       oneiric
$  uname -a
Linux my-desktop 3.0.0-15-generic #26-Ubuntu SMP Fri Jan 20 17:23:00 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
$  dpkg -l amarok*
Dezirate=U-nekonate/Instali/foRigi/Purigi/H-teni
| Stato=Ne/Inst/C-akmd-dosieroj/U-malpak/F-duon-akmd/H-duon-inst/W-ekigil-atend/T-ekigil-traktote
|/ Err?=(nenio)/Reinst-postulate (Stato,Err: majuskle=malbone)
||/ Nomo                                         Versio                                       Priskribo
+++-============================================-============================================-========================================================================================================
ii  amarok                                       2:2.4.3-1ubuntu2.1                           easy to use media player based on the KDE Platform
ii  amarok-common                                2:2.4.3-1ubuntu2.1                           architecture independent files for Amarok
ii  amarok-dbg                                   2:2.4.3-1ubuntu2.1                           debugging symbols for Amarok
ii  amarok-utils                                 2:2.4.3-1ubuntu2.1                           utilities for Amarok media player

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f80367ff7a0 (LWP 4697))]

Thread 15 (Thread 0x7f8004afb700 (LWP 4705)):
#0  0x00007f802f975077 in __pthread_getspecific (key=1) at pthread_getspecific.c:33
#1  0x00007f802def13dd in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f802decb419 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8033ae3f3e in QEventDispatcherGlib::processEvents (this=0x20da7a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f8033ab7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f8033ab7ef7 in QEventLoop::exec (this=0x7f8004afadb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f80339cf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f8033a9acbf in QInotifyFileSystemWatcherEngine::run (this=0x2282d50) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f80339d1d05 in QThreadPrivate::start (arg=0x2282d50) at thread/qthread_unix.cpp:331
#9  0x00007f802f96fefc in start_thread (arg=0x7f8004afb700) at pthread_create.c:304
#10 0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7f80026ce700 (LWP 4707)):
#0  0x00007f8033165773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f802decaf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f802decb429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8033ae3f3e in QEventDispatcherGlib::processEvents (this=0x234e880, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f8033ab7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f8033ab7ef7 in QEventLoop::exec (this=0x7f80026cdde0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f80339cf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f80339d1d05 in QThreadPrivate::start (arg=0x22e9e90) at thread/qthread_unix.cpp:331
#8  0x00007f802f96fefc in start_thread (arg=0x7f80026ce700) at pthread_create.c:304
#9  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7f8000c4b700 (LWP 4709)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f80339d21ab in wait (time=18446744073709551615, this=0x22e31e0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2335a10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8030f02864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x22e3040, th=0x233e4d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8030f04e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x233e4d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8030f04e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x233e4d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f8030f04e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x233e4d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f8030f04e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x233e4d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007f8030f04e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x233e4d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#9  0x00007f8030f03ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f8000c4ae00, parent=0x22e3040, th=0x233e4d0) at ../../../threadweaver/Weaver/Thread.cpp:87
#10 0x00007f8030f03d5b in ThreadWeaver::Thread::run (this=0x233e4d0) at ../../../threadweaver/Weaver/Thread.cpp:142
#11 0x00007f80339d1d05 in QThreadPrivate::start (arg=0x233e4d0) at thread/qthread_unix.cpp:331
#12 0x00007f802f96fefc in start_thread (arg=0x7f8000c4b700) at pthread_create.c:304
#13 0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f7ffa2d5700 (LWP 4710)):
#0  0x00007f802f972034 in __pthread_mutex_lock (mutex=0x1e1ba38) at pthread_mutex_lock.c:61
#1  0x00007f802decb414 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8033ae3f3e in QEventDispatcherGlib::processEvents (this=0x1dbcbe0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#3  0x00007f8033ab7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007f8033ab7ef7 in QEventLoop::exec (this=0x7f7ffa2d4db0, flags=...) at kernel/qeventloop.cpp:201
#5  0x00007f80339cf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#6  0x00007f8033a9acbf in QInotifyFileSystemWatcherEngine::run (this=0x7f800c5b86c0) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x00007f80339d1d05 in QThreadPrivate::start (arg=0x7f800c5b86c0) at thread/qthread_unix.cpp:331
#8  0x00007f802f96fefc in start_thread (arg=0x7f7ffa2d5700) at pthread_create.c:304
#9  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f7ff98b8700 (LWP 4711)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f80339d21ab in wait (time=18446744073709551615, this=0x22e31e0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2335a10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8030f02864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x22e3040, th=0x267ec90) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8030f04e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x267ec90) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8030f03ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7ff98b7e00, parent=0x22e3040, th=0x267ec90) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f8030f03d5b in ThreadWeaver::Thread::run (this=0x267ec90) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f80339d1d05 in QThreadPrivate::start (arg=0x267ec90) at thread/qthread_unix.cpp:331
#8  0x00007f802f96fefc in start_thread (arg=0x7f7ff98b8700) at pthread_create.c:304
#9  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f7ff8eac700 (LWP 4712)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f80339d21ab in wait (time=18446744073709551615, this=0x22e31e0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2335a10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8030f02864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x22e3040, th=0x2696550) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8030f04e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x2696550) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8030f03ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7ff8eabe00, parent=0x22e3040, th=0x2696550) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f8030f03d5b in ThreadWeaver::Thread::run (this=0x2696550) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f80339d1d05 in QThreadPrivate::start (arg=0x2696550) at thread/qthread_unix.cpp:331
#8  0x00007f802f96fefc in start_thread (arg=0x7f7ff8eac700) at pthread_create.c:304
#9  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f7ff86ab700 (LWP 4713)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f80339d21ab in wait (time=18446744073709551615, this=0x22e31e0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2335a10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f8030f02864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x22e3040, th=0x25fa540) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f8030f04e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x25fa540) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f8030f04e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2335b30, th=0x25fa540) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f8030f03ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7ff86aae00, parent=0x22e3040, th=0x25fa540) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f8030f03d5b in ThreadWeaver::Thread::run (this=0x25fa540) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f80339d1d05 in QThreadPrivate::start (arg=0x25fa540) at thread/qthread_unix.cpp:331
#9  0x00007f802f96fefc in start_thread (arg=0x7f7ff86ab700) at pthread_create.c:304
#10 0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f7ff786a700 (LWP 4714)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f802a925c2c in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f802b2dc220) at wtf/FastMalloc.cpp:2495
#2  0x00007f802a925d59 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1618
#3  0x00007f802f96fefc in start_thread (arg=0x7f7ff786a700) at pthread_create.c:304
#4  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f7ff6553700 (LWP 4717)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f802ff4bfe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f802ff4c019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f802f96fefc in start_thread (arg=0x7f7ff6553700) at pthread_create.c:304
#4  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f7ff0de5700 (LWP 4725)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f801be242db in ?? () from /usr/lib/libxine.so.1
#2  0x00007f801be2a3cd in ?? () from /usr/lib/libxine.so.1
#3  0x00007f802f96fefc in start_thread (arg=0x7f7ff0de5700) at pthread_create.c:304
#4  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f7fe6f86700 (LWP 4726)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f801be242db in ?? () from /usr/lib/libxine.so.1
#2  0x00007f801be2b46d in ?? () from /usr/lib/libxine.so.1
#3  0x00007f802f96fefc in start_thread (arg=0x7f7fe6f86700) at pthread_create.c:304
#4  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f80136c4700 (LWP 4753)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216
#1  0x00007f801be207d1 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f802f96fefc in start_thread (arg=0x7f80136c4700) at pthread_create.c:304
#3  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f8012ec3700 (LWP 4754)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f801be31793 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f802f96fefc in start_thread (arg=0x7f8012ec3700) at pthread_create.c:304
#3  0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f80124bd700 (LWP 4755)):
#0  0x00007f802f9731fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x3b57138) at pthread_mutex_unlock.c:290
#2  0x00007f802dec9f3f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f802decadfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f802decb429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8033ae3f3e in QEventDispatcherGlib::processEvents (this=0x39373b0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f8033ab7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f8033ab7ef7 in QEventLoop::exec (this=0x7f80124bcd90, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f80339cf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f801c07c39e in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#10 0x00007f80339d1d05 in QThreadPrivate::start (arg=0x2876080) at thread/qthread_unix.cpp:331
#11 0x00007f802f96fefc in start_thread (arg=0x7f80124bd700) at pthread_create.c:304
#12 0x00007f803317189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f80367ff7a0 (LWP 4697)):
[KCrash Handler]
#6  0x00007f80307ae1a1 in Phonon::PathPrivate::phononObjectDestroyed (this=0x1ec8e20, mediaNodePrivate=0x20e8940) at ../../phonon/path.cpp:395
#7  0x00007f80307a76f4 in Phonon::MediaNodePrivate::~MediaNodePrivate (this=0x20e8940, __in_chrg=<optimized out>) at ../../phonon/medianode.cpp:71
#8  0x00007f80307bf5fa in ~EffectPrivate (this=0x20e8940, __in_chrg=<optimized out>) at ../../phonon/effect_p.h:39
#9  ~VolumeFaderEffectPrivate (this=0x20e8940, __in_chrg=<optimized out>) at ../../phonon/volumefadereffect_p.h:35
#10 Phonon::VolumeFaderEffectPrivate::~VolumeFaderEffectPrivate (this=0x20e8940, __in_chrg=<optimized out>) at ../../phonon/volumefadereffect_p.h:35
#11 0x00007f8030791403 in Phonon::Effect::~Effect (this=0x20e86d0, __in_chrg=<optimized out>) at ../../phonon/effect.cpp:36
#12 0x00007f80307bf4ff in ~VolumeFaderEffect (this=0x20e86d0, __in_chrg=<optimized out>) at ../../phonon/volumefadereffect.h:50
#13 Phonon::VolumeFaderEffect::~VolumeFaderEffect (this=0x20e86d0, __in_chrg=<optimized out>) at ../../phonon/volumefadereffect.h:50
#14 0x00007f80358257f7 in EngineController::initializePhonon (this=0x1e14530) at ../../src/EngineController.cpp:139
#15 0x00007f80358266e8 in EngineController::slotStateChanged (this=0x1e14530, newState=<optimized out>, oldState=Phonon::StoppedState) at ../../src/EngineController.cpp:1166
#16 0x00007f8035826d2e in EngineController::qt_metacall (this=0x1e14530, _c=QMetaObject::InvokeMetaMethod, _id=41, _a=0x7fffb3d8e720) at ./EngineController.moc:206
#17 0x00007f8033acbeba in QMetaObject::activate (sender=0x1e15d30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb3d8e720) at kernel/qobject.cpp:3278
#18 0x00007f80307a47ec in Phonon::MediaObject::stateChanged (this=<optimized out>, _t1=Phonon::ErrorState, _t2=Phonon::StoppedState) at ./moc_mediaobject.cpp:189
#19 0x00007f80307a491e in Phonon::MediaObjectPrivate::_k_stateChanged (this=0x1e15660, newstate=Phonon::ErrorState, oldstate=Phonon::StoppedState) at ../../phonon/mediaobject.cpp:567
#20 0x00007f80307a6907 in Phonon::MediaObject::qt_metacall (this=0x1e15d30, _c=QMetaObject::InvokeMetaMethod, _id=23, _a=0x1f1a550) at ./moc_mediaobject.cpp:146
#21 0x00007f8033acfa5e in QObject::event (this=0x1e15d30, e=<optimized out>) at kernel/qobject.cpp:1217
#22 0x00007f80344b9474 in notify_helper (e=0x3cd1b80, receiver=0x1e15d30, this=0x1d23bf0) at kernel/qapplication.cpp:4486
#23 QApplicationPrivate::notify_helper (this=0x1d23bf0, receiver=0x1e15d30, e=0x3cd1b80) at kernel/qapplication.cpp:4458
#24 0x00007f80344be2e1 in QApplication::notify (this=0x7fffb3d8f0f0, receiver=0x1e15d30, e=0x3cd1b80) at kernel/qapplication.cpp:4365
#25 0x00007f803621b466 in KApplication::notify (this=0x7fffb3d8f0f0, receiver=0x1e15d30, event=0x3cd1b80) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007f8033ab8afc in QCoreApplication::notifyInternal (this=0x7fffb3d8f0f0, receiver=0x1e15d30, event=0x3cd1b80) at kernel/qcoreapplication.cpp:787
#27 0x00007f8033abc51f in sendEvent (event=0x3cd1b80, receiver=0x1e15d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1b88430) at kernel/qcoreapplication.cpp:1428
#29 0x00007f8033ae3a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#30 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#31 0x00007f802decaa5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f802decb258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f802decb429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f8033ae3ed6 in QEventDispatcherGlib::processEvents (this=0x1b89f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#35 0x00007f803456110e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00007f8033ab7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#37 0x00007f8033ab7ef7 in QEventLoop::exec (this=0x7fffb3d8f080, flags=...) at kernel/qeventloop.cpp:201
#38 0x00007f8033abc789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#39 0x000000000040916e in main (argc=1, argv=0x7fffb3d916f8) at ../../src/main.cpp:289

Possible duplicates by query: bug 273192, bug 270480, bug 269654.

Reported using DrKonqi
Comment 1 zohn.joidberg 2012-01-30 15:32:50 UTC 
Created attachment 68338 [details]
New crash information added by DrKonqi

amarok (2.4.3) on KDE Platform 4.7.4 (4.7.4) using Qt 4.7.4

- What I was doing when the application crashed:
After booting, started Amarok and tried to play something.
A notification appeared about falling back to another device. No sound.
Stopped Amarok.
Went into the audio settings through the mixer applet again.
Selected Internal sound Analog Stereo as preferred device and GStreamer as preferred in the internal tab.
Applied.
Tested sound successfully with the various sound buttons.
Tried sound in Rhytmbox and Amarok: No sound.
Not sure anymore when exactly Amarok crashed, but not long afterwards.

- Unusual behavior I noticed:
The sound always works in VLC and Firefox flash videos.
Amarok and Rhytmbox produce no sound. :(

-- Backtrace (Reduced):
#6  0x00007f4f35c7d1a1 in Phonon::PathPrivate::phononObjectDestroyed (this=0xbfcba0, mediaNodePrivate=0xf53480) at ../../phonon/path.cpp:395
#7  0x00007f4f35c766f4 in Phonon::MediaNodePrivate::~MediaNodePrivate (this=0xf53480, __in_chrg=<optimized out>) at ../../phonon/medianode.cpp:71
#8  0x00007f4f35c8e5fa in ~EffectPrivate (this=0xf53480, __in_chrg=<optimized out>) at ../../phonon/effect_p.h:39
#9  ~VolumeFaderEffectPrivate (this=0xf53480, __in_chrg=<optimized out>) at ../../phonon/volumefadereffect_p.h:35
#10 Phonon::VolumeFaderEffectPrivate::~VolumeFaderEffectPrivate (this=0xf53480, __in_chrg=<optimized out>) at ../../phonon/volumefadereffect_p.h:35
Comment 2 Myriam Schweingruber 2012-01-30 16:57:33 UTC 
(In reply to comment #0)
> Application: amarok (2.4.3)
> KDE Platform Version: 4.7.4 (4.7.4)
> Qt Version: 4.7.4
> Operating System: Linux 3.0.0-15-generic x86_64
> Distribution: Ubuntu 11.10
> 
> -- Information about the crash:
> This bug sounds similar to bug #210427, but it is said to be fixed since v4.6
> and I am using KDE 4.7.4.

Which is a typo, I just corrected that, it is solved in KDE 4.8, see also https://bugs.kde.org/show_bug.cgi?id=210427#c66

*** This bug has been marked as a duplicate of bug 210427 ***