rhythmbox surround sound 5.1 output option not available

[Iuga Marian Silviu]

Binary package hint: rhythmbox

When I open .dts .ac3 audio files (see for example Jean Michelle Jarrre - Aero 2004),
I do not get 5.1 separate sounds on 6 speakers, but only downmixed stereo 2 speakers.
Totem has 5.1 option, witch allows 6 different speaker sounds, in:
Edit->Preferences
Sound tab
and it just works for this /etc/asound.conf and /home/user/.asoundrc text file:
############################################
pcm.!default {
type plug
slave.pcm "softvol"
}

pcm.softvol {
type softvol
slave {
pcm "ch51dup"
}
control {
name "All"
card 0
}
}

pcm.ch51dup {
type route
slave.pcm surround51
slave.channels 6
ttable.0.0 1
ttable.1.1 1
ttable.0.2 1
ttable.1.3 1
ttable.0.5 0.5
ttable.1.5 0.5
}

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/rhythmbox
NonfreeKernelModules: nvidia
Package: rhythmbox 0.11.6svn20081008-0ubuntu4.2
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=ro_RO.UTF-8
 SHELL=/bin/bash
SourcePackage: rhythmbox
Uname: Linux 2.6.27-9-generic i686

[Pedro Villavicencio (pedro)]

likely known upstream, you can track it here: http://bugzilla.gnome.org/show_bug.cgi?id=562779

[Iuga Marian Silviu (iugamarian)]

I have managed to make pulseaudio to have six channels from /etc/pulse/daemon.conf and
I confirm the bug for this case also.

pavumeter shows that front are identical to rear, whilw playing DTS, AC3.