Bug#867574: rhythmbox: Reports a gstreamer plugin is missing

[Jason Crain]

Control: reassign -1 gstreamer1.0 1.12.1-1
Control: forwarded -1 https://bugzilla.gnome.org/show_bug.cgi?id=648010
Control: tags -1 + upstream
Control: affects -1 rhythmbox totem
Control: retitle -1 gstreamer1.0: Reports of missing plugins: Plugins blacklisted during upgrade

On Fri, Jul 07, 2017 at 10:41:19AM -0400, Andrew Perrin wrote:
> On 07/07/2017 10:31 AM, Jason Crain wrote:
> > On Fri, Jul 07, 2017 at 10:10:56AM -0400, Andrew Perrin wrote:
> > > 
> > > After normal upgrade, rhythmbox reports a Gstreamer plugin is missing when playing any audio file.
> > 
> > First, what is the output of "gst-inspect-1.0 -b" and "gst-inspect-1.0"?
> > This should show if any plugins have been blacklisted and which plugins
> > are correctly installed.
> > 
> > Removing the cache file in ~/.cache/gstreamer-1.0/ has fixed similar
> > problems with missing plugins.
> > 
> 
> Thank you - I had tried removing the file in ~/.gstreamer-0.10 but clearly
> was out of date on that. Removing ~/.cache/gstreamer-1.0 fixed the problem.
> 
> For the record, here is the output you requested:
> 
> aperrin at theodor:~$ gst-inspect-1.0 -b
> Blacklisted files:
>   libgstcoreelements.so
> 
> Total count: 1 blacklisted file
> aperrin at theodor:~$ gst-inspect-1.0
> realmedia:  rmdemux: RealMedia Demuxer
> realmedia:  rademux: RealAudio Demuxer
> realmedia:  rdtdepay: RDT packet parser
[snip]
> Total count: 242 plugins (1 blacklist entry not shown), 1354 features

This confirms what I suspected, that the problem is caused by a
gstreamer plugin being blacklisted, likely because of transient
non-functionality during the upgrade.  I've added a comment on the
gstreamer upstream bug report at https://bugzilla.gnome.org/648010.