[gcthompson]

Hi,

I've got an Xbox 360 connected to a Sony 32EX403 via HDMI. The TV passes through the dolby digital audio to a sherwood amp.
I'm trying to do the same thing with the revo but can't work out what settings I need to use, the best success I've had has been to hear a hiss over the speakers when playing a film. I've setup the audio like this:

Edit I can get it to play stereo films out over HDMI but when I try AC3/DTS soundtracks it starts hissing

Audio Output : HDMI
Speaker Configuration : 5.1
Boost volume level on downmix : No
Dolby Digitla (AC3) capable receiver : Yes
DTS capable receiver : Yes
Audio output device : hdmi(ALSA)
Passthrough output device : hdmi(ALSA)

aplay -l

gcthompson@xbmclive:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0


aplay -L

gcthompson@xbmclive:~$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=NVidia
HDA NVidia, ALC662 rev1 Analog
Default Audio Device
front:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
Front speakers
surround40:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Digital
IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=NVidia,DEV=0
HDA NVidia, HDMI 0
HDMI Audio Output
dmix:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
Direct sample mixing device
dmix:CARD=NVidia,DEV=1
HDA NVidia, ALC662 rev1 Digital
Direct sample mixing device
dmix:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Direct sample mixing device
dsnoop:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
Direct sample snooping device
dsnoop:CARD=NVidia,DEV=1
HDA NVidia, ALC662 rev1 Digital
Direct sample snooping device
dsnoop:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Direct sample snooping device
hw:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
Direct hardware device without any conversions
hw:CARD=NVidia,DEV=1
HDA NVidia, ALC662 rev1 Digital
Direct hardware device without any conversions
hw:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Direct hardware device without any conversions
plughw:CARD=NVidia,DEV=0
HDA NVidia, ALC662 rev1 Analog
Hardware device with all software conversions
plughw:CARD=NVidia,DEV=1
HDA NVidia, ALC662 rev1 Digital
Hardware device with all software conversions
plughw:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Hardware device with all software conversions
gcthompson@xbmclive:~$

Running this

speaker-test -D plug:hdmi -c6

just makes the input lights flicker on the sherwood amp.

It'd be great to get this working, I want to get rid of the flakey SPDIF switching box... Thanks for the help.

[gcthompson]

http://faq.nerdoftheherd.com/index.php?a...ikel&id=45

This article helps, not quite solving it though, it DOES enable Dolby Digital over HDMI but not DTS,...so close

[stayupthetree]

did you get everything sorted? I currently run Archlinux on my Revo 3610, sound can be a bear to setup. What do you have in your .asoundrc?

[gcthompson]

No, not managed to find a way to get it working properly. My .asoundrec is the default one that gets installed with eden.

Could it be that the TV doesn't support DTS passthrough only DD passthrough? Does that even make sense? My knowledge of these matters is minimal

[stayupthetree]

Did you remember to unmute the sound with alsamixer?


this might be of assistance:
https://wiki.archlinux.org/index.php/Acer_Aspire_R3610

[gcthompson]

The problem, was as expected. Passing DTS over HDMI through the TV was the problem. I've upgraded my amp and am now passing it through the amplifier after configuring the /etc/modprobe.d/alsa-base.conf file using the settings in the nerdoftheherd.com link above.DTS/DD now works correctly (well mostly, if you disregard that the mapping is wrong somewhere)

Thanks for all of the help