Public bug reported:
Banshee and Totem both suffer from a very annoying bug where they will
lock up when trying to interact with them while media is playing. It's
hard to describe, but here are the main points:
* When the application locks up, "GStreamer-WARNING **: wrong STREAM_LOCK count
0" is output.
* I have tested this with quite a diverse MP3 library.
* This happens **most frequently** using gstreamer0.10-fluendo-mp3.
* This happens less frequently when using lame/mad from
gstreamer0.10-plugins-ugly.
* I am unable to reproduce this issue with OGG/Vorbis audio.
Steps to reproduce:
1. Install gstreamer0.10-fluendo-mp3, as it is easiest to trigger the bug
(works with gstreamer0.10-plugins-ugly as well, just not as often).
2. Open any MP3 in Totem from the terminal.
3. Seek madly for 5-10 seconds or until it freezes. (Sometimes the freeze is
instantaneous, sometimes it takes a few seconds of trying.)
4. Observe the GStreamer warning message and deadlock.
This has been *very* difficult to pin down, as it happens seemingly at
random. I'm attaching a backtrace of Totem's state during the freeze.
Some points of note:
* The "GStreamer-CRITICAL" message is unrelated to the freezing from what I can
tell, as it doesn't show up during other traces I've done.
* ^C is where it froze.
* #10 is libgstflump3dec.so -- could not find debugging symbols for this, but
as it happens with the other MP3 decoders as well, I don't think the problem
lies in the MP3 plugins themselves.
Something I've noticed while testing this: it appears to freeze more often
around when threads are created/destroyed.
Let me know if there's any more information I can provide.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gstreamer0.10-plugins-ugly 0.10.18.3-1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
Date: Sat Feb 25 21:41:53 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm-256color
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gst-plugins-ugly0.10
UpgradeStatus: Upgraded to precise on 2012-02-10 (15 days ago)
** Affects: gstreamer0.10 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise
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https://bugs.launchpad.net/bugs/941229
Title:
deadlock: GStreamer-WARNING **: wrong STREAM_LOCK count 0
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