Amarok always segfaults generating dynamic playlists

[Steve McGrath]

Binary package hint: amarok

Running Karmic alpha, since upgrading to the first released beta of Amarok 2.2, Amarok crashes 100% of the time while generating dynamic playlists. I initially downgraded to 2.1, but that version has since been removed from the Karmic repositories. Amarok will generally not crash while creating a dynamic playlist from a collection consisting of a single album. However, when creating a dynamic playlist from my full 4,000+ song library on NFS, it will always crash when the status bar says "Generating playlist: 97%"

I will attach the last section of output when running amarok with -d and --nofork.

Should I report this upstream?

ProblemType: Bug
Architecture: i386
CheckboxSubmission: fab15882f8a3c1c4dd38353fc3ac84c0
CheckboxSystem: c4db302c6990d0bb1b00c5c328683b3b
Date: Wed Sep 23 14:31:57 2009
DistroRelease: Ubuntu 9.10
Package: amarok 2:2.1.90-0ubuntu1
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-10.35-generic
SourcePackage: amarok
Uname: Linux 2.6.31-10-generic i686

[Jonathan Thomas (echidnaman)]

Can you get a backtrace if this is still an issue with the final version of Kubuntu 9.10? (install amarok-dbg then get the backtrace from the KDE crash dialog)
Thanks.

[Steve McGrath (smcgrath23)]

I'm having some issues getting a backtrace. I have installed amarok-dbg, but I simply can't get either Apport or KDE's crash handler to catch Amarok crashing.

I notice that KCrash catches the crash, but never does anything...

Note that this isn't Kubuntu. I'm running standard Ubuntu 9.10, but I gotta have my Amarok!
Perhaps some KDE specific things are not initialised, preventing KCrash from working?
I'll install the whole KDE Desktop if I must, but I'd prefer not...

Here's the end of the output from "amarok -d --nofork" from a recent crash:

amarok: Initialized thread, count== 5
amarok: BEGIN: void Dynamic::BiasSolver::universeResults(QString, QStringList)
amarok: END__: void Dynamic::BiasSolver::universeResults(QString, QStringList) - Took 0.021s
amarok: BEGIN: void Dynamic::BiasSolver::universeUpdated()
amarok: END__: void Dynamic::BiasSolver::universeUpdated() - Took 0.00015s
amarok: BEGIN: virtual void Dynamic::BiasSolver::run()
amarok: BEGIN: void Dynamic::BiasSolver::computeDomain()
amarok: [BiasSolver] domain size: 4259
amarok: END__: void Dynamic::BiasSolver::computeDomain() - Took 0.0011s
amarok: BEGIN: Meta::TrackList Dynamic::BiasSolver::generateInitialPlaylist(bool&)
amarok: [BiasSolver] track selected: "Shut Me Up" "Mindless Self Indulgence"
amarok: [BiasSolver] track selected: "Get It Up" "Mindless Self Indulgence"
amarok: [BiasSolver] track selected: "Alienating Our Audience" "Mindless Self Indulgence"
amarok: [BiasSolver] track selected: "Lights Out" "Mindless Self Indulgence"
amarok: [BiasSolver] track selected: "Swipin' My Ass" "Mindless Self Indulgence"
KCrash: Application 'amarok' crashing...
sock_file=/home/steve/.kde/socket-yogzotot/kdeinit4__0
kdeinit4: preparing to launch /usr/lib/kde4/libexec/drkonqi
QSocketNotifier: Invalid socket 20 and type 'Read', disabling...
QSocketNotifier: Invalid socket 50 and type 'Read', disabling...
QSocketNotifier: Invalid socket 61 and type 'Read', disabling...
<unknown>: Fatal IO error 9 (Bad file descriptor) on X server :0.0.
amarok: BEGIN: virtual ContextObserver::~ContextObserver()
amarok: BEGIN: void ContextSubject::detach(ContextObserver*)
amarok: END__: void ContextSubject::detach(ContextObserver*) - Took 6.2e-05s
amarok: END__: virtual ContextObserver::~ContextObserver() - Took 0.00024s
amarok: BEGIN: virtual CurrentEngine::~CurrentEngine()
amarok: END__: virtual CurrentEngine::~CurrentEngine() - Took 7.8e-05s
amarok: BEGIN: virtual ContextObserver::~ContextObserver()
amarok: BEGIN: void ContextSubject::detach(ContextObserver*)
amarok: END__: void ContextSubject::detach(ContextObserver*) - Took 5.8e-05s
amarok: END__: virtual ContextObserver::~ContextObserver() - Took 0.00016s
Assertion 'pa_close(fds[0]) == 0' failed at pulsecore/core-util.c:2165, function pa_close_pipe(). Aborting.
Unable to start Dr. Konqi

[Andrew Ash (ash211)]

Sorry for not getting back to you sooner on this, Steve.

Part of the problem could be that you're running a beta version, which due tend to have bugs after all. Please upgrade to 2.2.1 [1] and report back with whether you can still reproduce the crash. If so, we should report to Amarok developers on the KDE bugtracker.

[1] http://www.kubuntu.org/news/amarok-2.2.1

[Steve McGrath (smcgrath23)]

And now I also am sorry for not responding for so long :)

I upgraded to 2.2.1 and happily I no longer get this particular crash. The dynamic playlist is still a little off compared to 1.4.x, seeming to always want to pick a narrow group of artists, even when suggestions are turned off. But that's a separate issue.

This bug can be closed, I believe.