quodlibet segfaults on playing mp3 and ogg files

[Eric Casteleijn]

When starting quodlibet from the terminal, and then playing any audiofile (I've tried with various ogg and mp3 files) I get the traceback pasted below. I think the actual problem may be in gstreamer volume, as I've seen rhythmbox also crash hard occasionally in 10.10 alpha 1 when messing around with its replaygain plugin, but rhythmbox does seem able to produce audio at least.

(quodlibet:28862): GStreamer-CRITICAL **:
Trying to dispose object "capsfilter0", but it still has a parent "bin0".
You need to let the parent manage the object instead of unreffing the object directly.

/usr/lib/pymodules/python2.6/quodlibet/player/gstbe.py:270: Warning: g_object_get_qdata: assertion `G_IS_OBJECT (object)' failed
  if self.__init_pipeline():
/usr/lib/pymodules/python2.6/quodlibet/player/gstbe.py:270: Warning: g_object_set_qdata_full: assertion `G_IS_OBJECT (object)' failed
  if self.__init_pipeline():
/usr/lib/pymodules/python2.6/quodlibet/player/gstbe.py:270: Warning: g_object_unref: assertion `G_IS_OBJECT (object)' failed
  if self.__init_pipeline():
/usr/lib/python2.6/sre_parse.py:672: Warning: g_object_get_qdata: assertion `G_IS_OBJECT (object)' failed
  source = Tokenizer(str)
/usr/lib/python2.6/sre_parse.py:672: Warning: g_object_set_qdata_full: assertion `G_IS_OBJECT (object)' failed
  source = Tokenizer(str)
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/quodlibet/player/gstbe.py", line 182, in do_set_property
    self._vol_element.set_property('volume', v)
TypeError: object at 0x9ca5eb4 of type __main__.GstVolume is not initialized
sys:1: Warning: g_object_ref: assertion `G_IS_OBJECT (object)' failed

(quodlibet:28862): GStreamer-CRITICAL **: gst_element_set_state: assertion `GST_IS_ELEMENT (element)' failed

(quodlibet:28862): GStreamer-CRITICAL **: gst_element_set_state: assertion `GST_IS_ELEMENT (element)' failed
Segmentation fault

[Eric Casteleijn (thisfred)]

I'm pretty sure the bug is not in quodlibet itself although it's as good a place as any to start the debugging: quodlibet worked fine in maverick for a while, and then broke as described above, but without any updates to the quodlibet package itself. Of course it could be that a change to an underlying dependency exposed an existing bug in QL.

[Eric Casteleijn (thisfred)]

It's hard to say whether it's all due to the same issue, but:

rhythmbox stops playing after one track
banshee crashes on start

[Christoph Reiter (lazka)]

Should be fixed I guess: http://code.google.com/p/quodlibet/issues/detail?id=527