[kde-linux] No sound with phonon and kde4.1

Beso givemesugarr at gmail.com
Wed Aug 13 21:03:39 UTC 2008

2008/8/13 SeaJey <seajey.serg at gmail.com>

> > Maybe you should rebuild phonon with libxine support? What backend amarok
> > use, xine or gstreamer?
> Amarok 1.4:
> Engine - Xine, Output plugin - oss, Device - auto, Speaker arrangement -
> Headphone 2.0, works properly with good sound quality
> amarok-nightly (current svn builds of Amarok 2 via Project Neon repo):
> uses Phonon, there is no extra sound configuration
> Phonon:
> default backend - gstreamer, another backend - xine, no one produce sound
> Tryed to export  PHONON_GST_AUDIOSINK=oss4sink" in /etc/profile
> After restarting Systemsettings Sound section crashing with error:
> systemsettings(8085) Phonon::KdePlatformPlugin::createBackend: using
> backend:
> "GStreamer"
> systemsettings: relocation error:
> /usr/lib/kde4/lib/libkaudiodevicelist.so.4:
> symbol snd_device_name_hint, version ALSA_0.9 not defined in file
> libasound.so.2 with link time reference

phonon gstreamer is not compatible with phonon xine. the first one is very
bad one and doesn't work well with kde4 and the second one has some breakage
on trunk version. so to have it working then you'll need to remove one of
them (i suggest reoving gstreamer) and then install the phonon-xine package
(the 4.1 packaged one that only compiles with gcc version < 4.3.0) then
install the oss mixer and access it through a terminal, check if something
is muted and then try using it.
programs that use phonon backend should work if xine-lib is compiled with
oss support, since phonon will redirect the sound via xine-lib. if xine-lib
it isn't built with oss support (normally is not shipped with it since oss
is deprecated in favor of alsa) then whichever application is trying to use
the sound device through phonon will not work. also you should ascertain
that another program is not blocking the oss device (happens if you have
some older 3.5 apps that speak directly to oss) by being opened. if that's
the case then maybe you should consider building pulseaudio and xine-lib
with pulseaudio support.

dott. ing. beso
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