[Bug 1661371] Re: [zesty] doesn't offer a window to install missing gstreamer codecs

[Matthias Klumpp]

Looks like it might be a good idea to get rid of sessioninstaller, since GNOME Software provides the PackageKit session interface properly already - but since Ubuntu doesn't use the PK backend of GS, I assume that the PK session API will also not work in Ubuntu's version of GNOME Software.
Maybe try uninstalling sessioninstaller and see if GNOME Software pops up with the right package or at least an error message.

I guess this problem might only really be fixed by switching GS to use
PK or alternatively make the PK session interface work in GS by other
means (or, of course, by fixing sessioninstaller, but since that thing
is essentially dead I assume that this would not be a viable option).

** Changed in: packagekit (Ubuntu)
       Status: New => Invalid

** Also affects: sessioninstaller (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: gnome-software (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1661371

Title:
  [zesty] doesn't offer a window to install missing gstreamer codecs

Status in PackageKit:
  Won't Fix
Status in gnome-software package in Ubuntu:
  New
Status in packagekit package in Ubuntu:
  Invalid
Status in sessioninstaller package in Ubuntu:
  New

Bug description:
  Attempting to play a mp3 file with Rhythmbox on the latest Zesty daily
  build

  Rhythmbox opens but no playback start.
  On the terminal I got this:

  Rhythmbox-Message: Missing plugin: gstreamer|1.0|rhythmbox-metadata|MPEG-1 Layer 3 (MP3) decoder|decoder-audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3
  /usr/lib/python3/dist-packages/sessioninstaller/core.py:47: PyGIWarning: Gst was imported without specifying a version first. Use gi.require_version('Gst', '1.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gst
  /usr/lib/python3/dist-packages/sessioninstaller/core.py:48: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gtk
  Falling back to package information
  Rhythmbox-Message: Missing plugins installed. Updating plugin registry ...

  But the wizard to install the missing codec actually fails to launch.

  Please see https://bugzilla.gnome.org/show_bug.cgi?id=770620

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