No audio output from Phonon with GStreamer backend

[Mark Greenwood]

Binary package hint: phonon

Clean install of a Natty daily build ISO from 18th Dec. Using the GStreamer backend for phonon I can't get any audio out of anything, not even KDE notifications. Video files play video but no audio comes out. A playback stream is visible in KMix and the volume is up full, but nothing can be heard.

Non-phonon apps (eg mplayer) work correctly.

I installed the phonon Xine backend and that, too, works correctly.

The GStreamer backend has always been a crock, why the switch?

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: phonon-backend-gstreamer 4:4.7.0really4.4.3-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.37-10.24-generic 2.6.37-rc6
Uname: Linux 2.6.37-10-generic i686
Architecture: i386
Date: Mon Dec 20 07:24:45 2010
ProcEnviron:
 LANGUAGE=
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: phonon

[Mark Greenwood (fatgerman)]

Some updates to gstreamer arrived today. I now get some sound, but it's very broken up and mostly sounds like a fart.

I get the following output from dragonplayer if I start it from a console:

QStringList Solid::Backends::Hal::HalManager::findDeviceByDeviceInterface(Solid::DeviceInterface::Type) error: "org.freedesktop.DBus.Error.ServiceUnknown"

QStringList Solid::Backends::Hal::HalManager::findDeviceByDeviceInterface(Solid::DeviceInterface::Type) error: "org.freedesktop.DBus.Error.ServiceUnknown"

QStringList Solid::Backends::Hal::HalManager::findDeviceByDeviceInterface(Solid::DeviceInterface::Type) error: "org.freedesktop.DBus.Error.ServiceUnknown"

QStringList Solid::Backends::Hal::HalManager::findDeviceByDeviceInterface(Solid::DeviceInterface::Type) error: "org.freedesktop.DBus.Error.ServiceUnknown"

I do not get this output when using the Xine backend for phonon, and audio still works properly with that backend.

[Harald Sitter (apachelogger)]

That is an issue in the KDE integration bit of phonon and should be fixed in KDE 4.6 final.

[Mark Greenwood (fatgerman)]

This is working now.