Hi Raymond,
thank you very much for your help!
> why do you specify ,DEV=0 ?
because it is the output form
play -L
iec958:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Digital
IEC958 (S/PDIF) Digital Audio Output
I can play stereo wave files with a play and this device as desired.
> do your card have spdif out at rear and internal spdif out header ?
Yes, It is a ASUS on-board sound solution with an external Toslink
connector and an unused internal spdif out header.
Here my test results from the provided link:
mplayer dvd://1 -channels 6 -ao alsa:device=iec958=1.0 -ac hwac3
-> Dolby Digital 3/2.1 Output (6 Channel) ; iecset -D hw:1 reports
non-audio (yippee)
But:
mplayer dvd://1 -channels 6 -ac hwac3
-> No Digital Output (2 Channel) no pulse input; iecset -D hw:1 reports
audio
mplayer dvd://1 -channels 6
-> Digital PCM Output (2 Channel) via pulse (6 Channels Input in
pavucontrol); iecset -D hw:1 reports audio
Conclusion:
It is mplayer + alsa iec958 driver works as desired
a52 plugin + alsa iec958 driver works as desired
aplay + alsa iec958 driver no sound
Pulsaudio + alsa iec958 driver works but no passthrough
vlc + pulseaudo works but no passthrough
vlc + alsa iec958 driver no sound
totem + pulseaudo no sound
So there must be must be something like an interface change that does not
effect mplayer and a52, but the other players.
Any Idea? What can I do next for debug?
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https://bugs.launchpad.net/bugs/1264609
Title:
No AC3 paththrough with hda intel ALC887-VD Saucy
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