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[Bug 1364258] Re: [desktop] camera-app and unity8 freeze on startup while initializing gstreamer-0.10

 

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-ui-toolkit (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1364258

Title:
  [desktop] camera-app and unity8 freeze on startup while initializing
  gstreamer-0.10

Status in “camera-app” package in Ubuntu:
  Confirmed
Status in “qtmultimedia-opensource-src” package in Ubuntu:
  Confirmed
Status in “ubuntu-ui-toolkit” package in Ubuntu:
  Confirmed

Bug description:
  qtmultimedia plugins like libgstcamerabin.so or libgstmediaplayer.so link against gstreamer-0.10:
  ldd /usr/lib/x86_64-linux-gnu/qt5/plugins/mediaservice/libgstcamerabin.so 
  	[....]
  	libgstinterfaces-0.10.so.0 => /usr/lib/x86_64-linux-gnu/libgstinterfaces-0.10.so.0 (0x00007fa8e4fdb000)
  	libgstpbutils-0.10.so.0 => /usr/lib/x86_64-linux-gnu/libgstpbutils-0.10.so.0 (0x00007fa8e4db6000)
  	libgstreamer-0.10.so.0 => /usr/lib/x86_64-linux-gnu/libgstreamer-0.10.so.0 (0x00007fa8e4acc000)

  while UbuntuComponents links against gstreamer-1.0:

  ldd /usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/libUbuntuComponents.so
  	[...]
  	libgstvideo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0 (0x00007f65a3e9f000)

  This seems to cause an initialization problem of gst-0.10:
  (camera-app:6221): GLib-GObject-WARNING **: cannot register existing type 'GstFormat'

  (camera-app:6221): GLib-CRITICAL **: g_once_init_leave: assertion
  'result != 0' failed

  (camera-app:6221): GLib-GObject-WARNING **: cannot retrieve class for
  invalid (unclassed) type '<invalid>'

  (camera-app:6221): GLib-GObject-WARNING **: cannot register existing
  type 'GstQuery'

  (camera-app:6221): GLib-CRITICAL **: g_once_init_leave: assertion
  'result != 0' failed

  (camera-app:6221): GLib-GObject-WARNING **: cannot retrieve class for
  invalid (unclassed) type '<invalid>'

  (camera-app:6221): GLib-GObject-WARNING **: cannot register existing
  type 'GstObject'

  (camera-app:6221): GLib-CRITICAL **: g_once_init_leave: assertion
  'result != 0' failed

  (camera-app:6221): GLib-GObject-WARNING **: cannot retrieve class for
  invalid (unclassed) type '<invalid>'

  And that in turn makes the main thread of the application block
  indefinitely

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: camera-app 3.0.0+14.10.20140829-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-11.16-generic 3.16.1
  Uname: Linux 3.16.0-11-generic x86_64
  ApportVersion: 2.14.7-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Sep  2 09:30:46 2014
  InstallationDate: Installed on 2013-11-08 (297 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131108)
  SourcePackage: camera-app
  SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
  UpgradeStatus: No upgrade log present (probably fresh install)

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References