I upgraded my PC to an i7 with 16 Gig memory so I also upgraded to the 64-bit image of Kubuntu 12.10

I tried to use Amarok, but...

-Amarok crashed
-I decided to send a bug report (I had never done this before)
https://bugs.kde.org/show_bug.cgi?id=316055

-A support person told me to upgrade Amarok to 2.7
-I found a procedure on the KDE site
>
> sudo add-apt-repository ppa:kubuntu-ppa/backports
> sudo apt-get update
> sudo apt-get upgrade
>


-I did it, but KDE broke and I could no longer log in.
KDE gave me a white background but no login screen

-using my ipad, I found a way to back-out of the change:

sudo apt-get install ppa-purge
sudo ppa-purge ppa:kubuntu-ppa/backports

-Amarok is still broken, but I can work in Kubuntu again.

Can I use "sudo apt-get install amarok" to only upgrade Amarok to 2.7 ? What do I need to do to change the repository for the change only, and then remove the repository after the change is made?

A second question is, if this is the fix for the bug, why doesn't Muon Update manager do it. Muon said the system was up to date.

Thanks for helping a newbee!

Donald

Well, you did it partially right, but you need both PPA's for Kubuntu, the regular Kubuntu PPA and the Backports PPA. And you do not need to update everything, just

Code: Select all

sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo add-apt-repository ppa:kubuntu-ppa
sudo apt-get update

should then trigger Muon to show you the upgradable packages. There you can just select Amarok, no need to upgrade everything.

No idea why you got a blank screen, but that can just be that you have configuration files that cause a problem, in that case, from a shell, do the following (without starting KDE, just Ctrl+Alt+F1 to go to a shell):

Code: Select all

 mv ~/.kde ~/.kde-old

Then go back to the login shell with Ctrl+Alt+F7

I spent the day studying how apt works and what the commands were supposed to do. Once I spelled them right
they did install amarok 2.7. <smile>

Unfortunately the application crashes every time I try to play a music file on my local system.
the debug dump looked to me like others already received, so I did not send it in to the developers.

I guess the application simply won't work on my version of Kubuntu 12.10 64-bit .

Now if I understand this, Muon is a from-end to apt, so if I changed the source repositories to try amarok 2.7
I need now to change them back to more supported repositories ?? --but how ?


here's what I did to install amarok 2.7:

$ sudo add-apt-repository ppa:kubuntu-ppa/backports
You are about to add the following PPA to your system:
Backports of new versions of KDE and major KDE apps for Kubuntu which are either too large a change or not yet tested enough to go to Ubuntu Backports. More info: https://launchpad.net/~kubuntu-ppa/+archive/backports
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keyring `/tmp/tmputu3qs/secring.gpg' created
gpg: keyring `/tmp/tmputu3qs/pubring.gpg' created
gpg: requesting key 8AC93F7A from hkp server keyserver.ubuntu.com
gpg: /tmp/tmputu3qs/trustdb.gpg: trustdb created
gpg: key 8AC93F7A: public key "Launchpad Kubuntu Updates" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK

$ sudo add-apt-repository ppa:kubuntu-ppa
You are about to add the following PPA to your system:
Updates for Kubuntu releases which are due to go to Ubuntu Updates. Mostly KDE point releases.
More info: https://launchpad.net/~kubuntu-ppa/+archive/ppa
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keyring `/tmp/tmpwfo4g7/secring.gpg' created
gpg: keyring `/tmp/tmpwfo4g7/pubring.gpg' created
gpg: requesting key 8AC93F7A from hkp server keyserver.ubuntu.com
gpg: /tmp/tmpwfo4g7/trustdb.gpg: trustdb created
gpg: key 8AC93F7A: public key "Launchpad Kubuntu Updates" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK

chad@chad-System-Product-Name:~$ sudo apt-get update
Ign http://ppa.launchpad.net quantal InRelease
Ign http://ppa.launchpad.net quantal InRelease
Get:1 http://ppa.launchpad.net quantal Release.gpg [316 B]
Get:2 http://ppa.launchpad.net quantal Release.gpg [316 B]
Get:3 http://ppa.launchpad.net quantal Release [11.9 kB]
Get:4 http://ppa.launchpad.net quantal Release [11.9 kB]
Get:5 http://ppa.launchpad.net quantal/main Sources [63.0 kB]
Get:6 http://ppa.launchpad.net quantal/main amd64 Packages [120 kB]
Get:7 http://ppa.launchpad.net quantal/main i386 Packages [120 kB]
Get:8 http://ppa.launchpad.net quantal/main Sources [49.2 kB]
Get:9 http://ppa.launchpad.net quantal/main amd64 Packages [90.3 kB]
Get:10 http://ppa.launchpad.net quantal/main i386 Packages [90.4 kB]
Ign http://ppa.launchpad.net quantal/main Translation-en_CA
Ign http://ppa.launchpad.net quantal/main Translation-en
Ign http://ppa.launchpad.net quantal/main Translation-en_CA
Ign http://ppa.launchpad.net quantal/main Translation-en
Fetched 557 kB in 5s (93.7 kB/s)
Reading package lists... Done


$ sudo apt-get install amarok
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
kdelibs5-dbg libc6-dbg libegl1-mesa libgbm1 libkimproxy4 libkutils4 libqt4-dbg libwayland0
libxcb-damage0 libxcb-xfixes0
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
amarok-common amarok-utils kdelibs-bin kdelibs5-data kdelibs5-dbg kdelibs5-plugins kdoctools
libkcmutils4 libkde3support4 libkdeclarative5 libkdecore5 libkdesu5 libkdeui5 libkdewebkit5
libkdnssd4 libkemoticons4 libkfile4 libkhtml5 libkidletime4 libkimproxy4 libkio5 libkjsapi4
libkjsembed4 libkmediaplayer4 libknewstuff2-4 libknewstuff3-4 libknotifyconfig4 libkntlm4
libkparts4 libkprintutils4 libkpty4 libkrosscore4 libkrossui4 libktexteditor4
libkunitconversion4 libkutils4 libnepomuk4 libnepomukquery4a libnepomukutils4 libplasma3
libsolid4 libthreadweaver4
Suggested packages:
amarok-doc libqt4-sql-psql moodbar hspell
The following NEW packages will be installed:
amarok amarok-common amarok-utils
The following packages will be upgraded:

...

ldconfig deferred processing now taking place
Processing triggers for menu ...
$

Wrong guess: I use Kubuntu 12.10 myself on a 64-bit system, it certainly works. Don't jump to conclusions here, please, it's totally illogical.

Try erasing the configuration files with this command:

Code: Select all

 rm $HOME/.kde/share/config/amarok*

Then start Amarok from a konsole with this command:

Code: Select all

 amarok -d --nofork

At least you will get some debug output telling us why it doesn't work. Also if it crashes, don't paste the output here, use http://paste.kde.org and give the link, it's far easier to actually read it in a paste than having to scroll in a reduced forum space. If you get a crash I will need the backtrace from Dr. Konqi, NOT the konsole output.

Thanks for helping me with this issue. I appreciate it so I can learn how kde works. I love it.

Here is the last part of the console dump after the app crashed. I had just tried to play something in my playlist...
<smile>
Donald
========================================
amarok: [EngineController] Offset: 0
amarok: END__: void EngineController::playUrl(const KUrl&, uint) [Took: 0.011s]
amarok: END__: void EngineController::play(Meta::TrackPtr, uint) [Took: 0.011s]
amarok: END__: void Playlist::Actions::play(quint64, bool) [Took: 0.011s]
amarok: END__: void Playlist::Actions::play(const QModelIndex&) [Took: 0.011s]
amarok: END__: void Playlist::PrettyListView::trackActivated(const QModelIndex&) [Took: 0.011s]
amarok: BEGIN: void EngineController::slotMetaDataChanged()
amarok: [EngineController] slotMetaDataChanged(): new meta-data: QMap(("xesam:url", QVariant(QUrl, QUrl("file:///home/chad/Music/Anexandre Thauraud 3/Tic,Toc, Choc (feat. piano_ Alexandre Tharaud)01François Couperin.ogg") ) ) )
amarok: END__: void EngineController::slotMetaDataChanged() [Took: 0s]
amarok: BEGIN: void EngineController::slotMetaDataChanged()
amarok: [EngineController] slotMetaDataChanged(): new meta-data: QMap(("xesam:album", QVariant(QString, "Tic,Toc, Choc (feat. piano: Alexandre Tharaud)") ) ( "xesam:author" , QVariant(QString, "François Couperin") ) ( "xesam:genre" , QVariant(QString, "Unknown") ) ( "xesam:title" , QVariant(QString, "Les Baricades Mistérieuses 6e Ordre. Vivement") ) ( "xesam:url" , QVariant(QUrl, QUrl("file:///home/chad/Music/Anexandre Thauraud 3/Tic,Toc, Choc (feat. piano_ Alexandre Tharaud)01François Couperin.ogg") ) ) )
amarok: END__: void EngineController::slotMetaDataChanged() [Took: 0s]
KCrash: Application 'amarok' crashing...
KCrash: Attempting to start /usr/lib/kde4/libexec/drkonqi from kdeinit
sock_file=/home/chad/.kde/socket-chad-System-Product-Name/kdeinit4__0
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 41 and type 'Read', disabling...
QSocketNotifier: Invalid socket 60 and type 'Read', disabling...
QSocketNotifier: Invalid socket 78 and type 'Read', disabling...
QSocketNotifier: Invalid socket 84 and type 'Read', disabling...
QSocketNotifier: Invalid socket 85 and type 'Read', disabling...
QSocketNotifier: Invalid socket 83 and type 'Read', disabling...
amarok: Fatal IO error: client killed
Assertion 'pa_close(fds[0]) == 0' failed at pulsecore/core-util.c:2292, function pa_close_pipe(). Aborting.
Unable to start Dr. Konqi
chad@chad-System-Product-Name:~/.kde/share/config$

Well, without a backtrace it is hard to tell. I presume you did erase the old config files before that, didn't you? If not, that is the first thing to do and try again.

Now, make sure you have the package "amarok-dbg" installed, then run Amarok with the following options:

Code: Select all

gdb amarok
run -d --nofork

When it crashes, you type

Code: Select all

 thread apply all bt

and provide the backtrace that follows from there.

I hope I did it the way you wanted.



chad@chad-System-Product-Name:~$ rm $HOME/.kde/share/config/amarok*
rm: cannot remove `/home/chad/.kde/share/config/amarok*': No such file or directory
chad@chad-System-Product-Name:~$
chad@chad-System-Product-Name:~$ gdb amarok
GNU gdb (GDB) 7.5-ubuntu
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/amarok...Reading symbols from /usr/lib/debug/.build-id/60/31cfac85425f0d5b85f43691dc74730f4bdcb2.debug...done.
done.
(gdb) run -d --nofork
Starting program: /usr/bin/amarok -d --nofork

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.


--------------------
perin.ogg") ) ) )
amarok: END__: void EngineController::slotMetaDataChanged() [Took: 0s]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff9626a700 (LWP 6463)]
0x00007fff966d0148 in is_header_vorbis (pad=0x7fff90004588, packet=0x7fff90010640)
at gstoggstream.c:800
800 gstoggstream.c: No such file or directory.
(gdb)
(gdb) run -d --nofork
(I was not sure if these commands had worked the first time, but it looks like they did)

The program being debugged has been started already.
Start it from the beginning? (y or n) n
Program not restarted.
(gdb)
(gdb) thread apply all bt

Thread 17 (Thread 0x7fff95a69700 (LWP 6464)):
#0 0x00007fffe723e73a in gst_fraction_range_get_type () at gstvalue.c:4825
#1 0x00007fffe723eb79 in gst_type_is_fixed (type=9825488) at gstvalue.c:197
#2 0x00007fffe72411ea in gst_value_is_fixed (value=0x7fff90083b78) at gstvalue.c:4140
#3 0x00007fffe7224531 in gst_structure_foreach (structure=0x7fff90081010,
func=func@entry=0x7fffe71e07e0 <gst_caps_is_fixed_foreach>, user_data=user_data@entry=0x0)
at gststructure.c:1097
#4 0x00007fffe71e205c in gst_caps_is_fixed (caps=caps@entry=0x31f5f00) at gstcaps.c:1017
#5 0x00007fffe720432d in gst_pad_set_caps (pad=0xd74b20, caps=caps@entry=0x31f5f00)
at gstpad.c:2712
#6 0x00007fffd58956d5 in gst_single_queue_push_one (object=0x7fff90162970, sq=0x7fff9007ae00,
mq=0x7fff90076000) at gstmultiqueue.c:1085
#7 gst_multi_queue_loop (pad=<optimized out>) at gstmultiqueue.c:1318
#8 0x00007fffe722ee34 in gst_task_func (task=0x3233650) at gsttask.c:327
#9 0x00007fffef311e62 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fffef311645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff0de3e9a in start_thread (arg=0x7fff95a69700) at pthread_create.c:308
#12 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7fff9626a700 (LWP 6463)):
#0 0x00007fff966d0148 in is_header_vorbis (pad=0x7fff90004588, packet=0x7fff90010640)
at gstoggstream.c:800
#1 0x00007fff966b8da8 in gst_ogg_demux_chain_peer (pad=pad@entry=0x7fff90004400,
packet=0x7fff90010640, push_headers=push_headers@entry=1) at gstoggdemux.c:560
#2 0x00007fff966bb578 in gst_ogg_demux_activate_chain (ogg=ogg@entry=0xd44360,
chain=chain@entry=0x1e16e80, event=event@entry=0x1e16ed0) at gstoggdemux.c:2608
#3 0x00007fff966c0b07 in gst_ogg_demux_perform_seek_pull (ogg=ogg@entry=0xd44360,
event=event@entry=0x0) at gstoggdemux.c:3188
#4 0x00007fff966c2d88 in gst_ogg_demux_loop (pad=<optimized out>) at gstoggdemux.c:4400
#5 0x00007fffe722ee34 in gst_task_func (task=0x3233050) at gsttask.c:327
#6 0x00007fffef311e62 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7 0x00007fffef311645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x00007ffff0de3e9a in start_thread (arg=0x7fff9626a700) at pthread_create.c:308
#9 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

---Type <return> to continue, or q <return> to quit---
Thread 15 (Thread 0x7fff9af86700 (LWP 6457)):
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00007ffff13bccd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2 0x00007ffff13bcd09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3 0x00007ffff0de3e9a in start_thread (arg=0x7fff9af86700) at pthread_create.c:308
#4 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7fffb0e6f700 (LWP 6431)):
#0 0x00007ffff489d023 in select () at ../sysdeps/unix/syscall-template.S:82
#1 0x00007ffff51defe2 in QProcessManager::run (
this=0x7ffff5558520 <processManager()::processManager>) at io/qprocess_unix.cpp:245
#2 0x00007ffff5103aec in QThreadPrivate::start (
arg=0x7ffff5558520 <processManager()::processManager>) at thread/qthread_unix.cpp:338
#3 0x00007ffff0de3e9a in start_thread (arg=0x7fffb0e6f700) at pthread_create.c:308
#4 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7fffb1eff700 (LWP 6430)):
#0 0x00007ffff4898303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>,
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1 0x00007fffef2edd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fffef2edea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff522ec16 in QEventDispatcherGlib::processEvents (this=0x7fffa00008c0, flags=...)
at kernel/qeventdispatcher_glib.cpp:426
#4 0x00007ffff51ff2bf in QEventLoop::processEvents (this=this@entry=0x7fffb1efee00, flags=...)
at kernel/qeventloop.cpp:149
#5 0x00007ffff51ff548 in QEventLoop::exec (this=0x7fffb1efee00, flags=...)
at kernel/qeventloop.cpp:204
#6 0x00007ffff5100b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7 0x00007ffff5103aec in QThreadPrivate::start (arg=0x153a2c0) at thread/qthread_unix.cpp:338
#8 0x00007ffff0de3e9a in start_thread (arg=0x7fffb1eff700) at pthread_create.c:308
#9 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7fffb2700700 (LWP 6429)):
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
---Type <return> to continue, or q <return> to quit---
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00007fffebf41b2d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2 0x00007fffebf41c39 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3 0x00007ffff0de3e9a in start_thread (arg=0x7fffb2700700) at pthread_create.c:308
#4 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fffb396a700 (LWP 6428)):
#0 0x00007ffff4898303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>,
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1 0x00007fffef2edd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fffef2edea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff522ec16 in QEventDispatcherGlib::processEvents (this=0x7fffa80008c0, flags=...)
at kernel/qeventdispatcher_glib.cpp:426
#4 0x00007ffff51ff2bf in QEventLoop::processEvents (this=this@entry=0x7fffb3969dd0, flags=...)
at kernel/qeventloop.cpp:149
#5 0x00007ffff51ff548 in QEventLoop::exec (this=0x7fffb3969dd0, flags=...)
at kernel/qeventloop.cpp:204
#6 0x00007ffff5100b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7 0x00007ffff51df9af in QInotifyFileSystemWatcherEngine::run (this=0x141a150)
at io/qfilesystemwatcher_inotify.cpp:248
#8 0x00007ffff5103aec in QThreadPrivate::start (arg=0x141a150) at thread/qthread_unix.cpp:338
#9 0x00007ffff0de3e9a in start_thread (arg=0x7fffb396a700) at pthread_create.c:308
#10 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7fffc0bfc700 (LWP 6427)):
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00007ffff510404b in wait (time=18446744073709551615, this=0x119ce50)
at thread/qwaitcondition_unix.cpp:86
#2 QWaitCondition::wait (this=<optimized out>, mutex=0x119cfd0, time=18446744073709551615)
at thread/qwaitcondition_unix.cpp:158
#3 0x00007ffff235c0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (
this=0x119cd00, th=0x11ef9d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4 0x00007ffff235e92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11ef9d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5 0x00007ffff235d79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7fffc0bfbe00,
---Type <return> to continue, or q <return> to quit---
parent=0x119cd00, th=th@entry=0x11ef9d0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6 0x00007ffff235d82b in ThreadWeaver::Thread::run (this=0x11ef9d0)
at ../../../threadweaver/Weaver/Thread.cpp:142
#7 0x00007ffff5103aec in QThreadPrivate::start (arg=0x11ef9d0) at thread/qthread_unix.cpp:338
#8 0x00007ffff0de3e9a in start_thread (arg=0x7fffc0bfc700) at pthread_create.c:308
#9 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7fffc13fd700 (LWP 6426)):
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00007ffff510404b in wait (time=18446744073709551615, this=0x119ce50)
at thread/qwaitcondition_unix.cpp:86
#2 QWaitCondition::wait (this=<optimized out>, mutex=0x119cfd0, time=18446744073709551615)
at thread/qwaitcondition_unix.cpp:158
#3 0x00007ffff235c0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (
this=0x119cd00, th=0x11c2130) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4 0x00007ffff235e92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2130) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5 0x00007ffff235e944 in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2130) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6 0x00007ffff235e944 in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2130) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7 0x00007ffff235e944 in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2130) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8 0x00007ffff235e944 in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2130) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#9 0x00007ffff235d79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7fffc13fce00,
parent=0x119cd00, th=th@entry=0x11c2130) at ../../../threadweaver/Weaver/Thread.cpp:87
#10 0x00007ffff235d82b in ThreadWeaver::Thread::run (this=0x11c2130)
at ../../../threadweaver/Weaver/Thread.cpp:142
#11 0x00007ffff5103aec in QThreadPrivate::start (arg=0x11c2130) at thread/qthread_unix.cpp:338
#12 0x00007ffff0de3e9a in start_thread (arg=0x7fffc13fd700) at pthread_create.c:308
#13 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fffc1bfe700 (LWP 6425)):
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
---Type <return> to continue, or q <return> to quit---
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00007ffff510404b in wait (time=18446744073709551615, this=0x119ce50)
at thread/qwaitcondition_unix.cpp:86
#2 QWaitCondition::wait (this=<optimized out>, mutex=0x119cfd0, time=18446744073709551615)
at thread/qwaitcondition_unix.cpp:158
#3 0x00007ffff235c0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (
this=0x119cd00, th=0x11c2150) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4 0x00007ffff235e92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5 0x00007ffff235e944 in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6 0x00007ffff235e944 in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x11c2150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7 0x00007ffff235d79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7fffc1bfde00,
parent=0x119cd00, th=th@entry=0x11c2150) at ../../../threadweaver/Weaver/Thread.cpp:87
#8 0x00007ffff235d82b in ThreadWeaver::Thread::run (this=0x11c2150)
at ../../../threadweaver/Weaver/Thread.cpp:142
#9 0x00007ffff5103aec in QThreadPrivate::start (arg=0x11c2150) at thread/qthread_unix.cpp:338
#10 0x00007ffff0de3e9a in start_thread (arg=0x7fffc1bfe700) at pthread_create.c:308
#11 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fffc23ff700 (LWP 6424)):
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00007ffff510404b in wait (time=18446744073709551615, this=0x119ce50)
at thread/qwaitcondition_unix.cpp:86
#2 QWaitCondition::wait (this=<optimized out>, mutex=0x119cfd0, time=18446744073709551615)
at thread/qwaitcondition_unix.cpp:158
#3 0x00007ffff235c0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (
this=0x119cd00, th=0x119d3b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4 0x00007ffff235e92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x119d060,
th=0x119d3b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5 0x00007ffff235d79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7fffc23fee00,
parent=0x119cd00, th=th@entry=0x119d3b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6 0x00007ffff235d82b in ThreadWeaver::Thread::run (this=0x119d3b0)
at ../../../threadweaver/Weaver/Thread.cpp:142
#7 0x00007ffff5103aec in QThreadPrivate::start (arg=0x119d3b0) at thread/qthread_unix.cpp:338
---Type <return> to continue, or q <return> to quit---
#8 0x00007ffff0de3e9a in start_thread (arg=0x7fffc23ff700) at pthread_create.c:308
#9 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fffc92f4700 (LWP 6423)):
#0 0x00007ffff4898303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>,
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1 0x00007fffef2edd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0

#2 0x00007fffef2edea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff522ec16 in QEventDispatcherGlib::processEvents (this=0x7fffc4000900, flags=...)
at kernel/qeventdispatcher_glib.cpp:426
#4 0x00007ffff51ff2bf in QEventLoop::processEvents (this=this@entry=0x7fffc92f3dd0, flags=...)
at kernel/qeventloop.cpp:149
#5 0x00007ffff51ff548 in QEventLoop::exec (this=0x7fffc92f3dd0, flags=...)
at kernel/qeventloop.cpp:204
#6 0x00007ffff5100b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7 0x00007ffff51df9af in QInotifyFileSystemWatcherEngine::run (this=0xe439a0)
at io/qfilesystemwatcher_inotify.cpp:248
#8 0x00007ffff5103aec in QThreadPrivate::start (arg=0xe439a0) at thread/qthread_unix.cpp:338
#9 0x00007ffff0de3e9a in start_thread (arg=0x7fffc92f4700) at pthread_create.c:308
#10 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffd66db700 (LWP 6421)):
#0 0x00007ffff4898303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>,
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87

#1 0x00007fffecb5bb6f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2 0x00007fffecb4d0b5 in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3 0x00007fffecb4d719 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0

#4 0x00007fffecb4d7d0 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5 0x00007fffecb5bb1f in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6 0x00007fffe822d543 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-2.1.so
#7 0x00007ffff0de3e9a in start_thread (arg=0x7fffd66db700) at pthread_create.c:308
#8 0x00007ffff48a3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7fb7780 (LWP 6416)):
#0 0x00007ffff4898303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>,
---Type <return> to continue, or q <return> to quit---
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1 0x00007fffef2edd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fffef2edea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff522ebf6 in QEventDispatcherGlib::processEvents (this=0x617ad0, flags=...)
at kernel/qeventdispatcher_glib.cpp:424
#4 0x00007ffff5c86c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...)
at kernel/qguieventdispatcher_glib.cpp:204
#5 0x00007ffff51ff2bf in QEventLoop::processEvents (this=this@entry=0x7fffffffbae0, flags=...)
at kernel/qeventloop.cpp:149
#6 0x00007ffff51ff548 in QEventLoop::exec (this=0x7fffffffbae0, flags=...)
at kernel/qeventloop.cpp:204
#7 0x00007ffff5204708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#8 0x000000000040909a in main (argc=3, argv=0x7fffffffe028) at ../../src/main.cpp:329
(gdb)
(gdb)

You did it right, no worry

There is nothing indicating a problem with Amarok, I suspect it to be a phonon or gstreamer or pulseaudio issue. Could you please install the package "phonon-backend-vlc", then in the KDE Systemsettings -> Multimedia -> Phonon -> Backend tab push the vlc engine to the top, then restart KDE.

I first tried to install it with Muon Package Manager, but it was not listed there ??

then I tried with apt-get install... see below


chad@chad-System-Product-Name:~$ apt-get install phonon-backend-vlc
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
chad@chad-System-Product-Name:~$ sudo apt-get install phonon-backend-vlc
[sudo] password for chad:
Sorry, try again.
[sudo] password for chad:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package phonon-backend-vlc is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'phonon-backend-vlc' has no installation candidate
chad@chad-System-Product-Name:~$

Weird, are you sure you have all sources configured correctly? Please check in the Muon Package Manager Settings menu -> Configure Software Sources that you have all sources checked, and that all updates in the Updates tab are checked as well. In doubt, you should use the Main Server as a source, your mirror might be faulty.

If you didn't have all sources configured, then please update your system first, because that might be the main problem we face here.

Thanks so much for helping a newbee. Unfortunately I can no longer work on this bug, as I got to
a point where I could no longer boot into the image, and would get a "grub rescue > -" message.
I thought this meant that I needed to fix grub, so I spent a day or so trying, only to realise that grub
was not really broken, but there was a setting/procedure with my Asus UEFI (bios) boot mamager that
can giving me the grub rescue message instead of booting. I do not have a good explanation for it yet, but
will discuss it in a better form.

In the process, I reloaded many different images (or tried) and ended up Kubuntu 12.04 LTS amd-64
which is currently working on my hardware. --including Amarok!

I'll leave well enough alone for now.

regards