[mythtv-users] How to set digital audio passthrough in 0.24.1-fixes?

[Victor]

On Sat, Jul 2, 2011 at 9:12 AM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> On 2 July 2011 11:34, Victor <vperez at rwserver.com> wrote:
> > I have been running mythbuntu 9.10 for the last couple of years,
> everything
> > worked pretty good. I was able to get dolby 5.1 and DTS passthrough from
> > HDMI with no issues for recordings and mkv videos.
> >
> > Last week i upgraded to mythbuntu 11.04 and I can't figure out how to
> > configure it to get that. My Onkyo receiver no longer detects the audio
> as
> > Dolby or DTS, even for recordings and videos that worked just fine before
> > the upgrade. Any ideas?
>
> You go into the setup -> general -> audio
> Select the digital audio output, check AC3 and DTS.
>
> Select 5.1 for audio speakers
>
> that's it
>


That is how my settings are, yet it doesn't work, see screenshot at
http://twitpic.com/5k3yle

I get audio but it is somehow processed by mythtv, no passthrough. Most of
my HDHomerun recordings have Dolby 5.1 audio, my Onkyo receiver used to
light up the little red "Dolby" logo when I played them before the upgrade.
It also lighted up a little "DTS" logo in the mkv videos that had it. It
doesn't anymore, I just get plain old stereo :-(

Little audio debugging, playing back a mkv with DTS audio:

2011-07-02 10:47:38.304 AO: enc(0), passthru(0), canAC3(1), canDTS(1),
canLPCM(1), configured_channels(6), 6 channels supported(1)
2011-07-02 10:47:38.304 AO: Opening audio device 'hdmi:CARD=NVidia,DEV=1' ch
6(6) sr 48000 sf signed 16 bit reenc 1
2011-07-02 10:47:38.305 ALSA: SetParameters(format=2, channels=6,
rate=48000, buffer_time=500000, period_time=16)

Btw: hdmi:CARD=NVidia,DEV=1 is the only one that outputs audio

$ aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
hdmi:CARD=NVidia,DEV=0
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    HDMI Audio Output
dmix:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Direct sample mixing device
dmix:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Direct sample mixing device
dmix:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Direct sample mixing device
dmix:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Direct sample mixing device
dsnoop:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Direct sample snooping device
dsnoop:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Direct sample snooping device
dsnoop:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Direct sample snooping device
dsnoop:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Direct sample snooping device
hw:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
hw:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
hw:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
hw:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
plughw:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
plughw:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
plughw:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
plughw:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
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