Raymond: thank you for your time and effort!
Following your advice I was able to configure iec958:CARD=U7 and point it at
the correct hardware device.
The following aplay command goes to the digital output:
$ aplay -D iec958:CARD=U7 test.wav
However, the pulseaudio still redirects both, Analog and Digital (S/PDIF)
outputs to the same analog output.
There are no special characters in the card name.
Here is an excerpt from /usr/share/alsa/cards/USB-Audio.conf:
USB-Audio.pcm.iec958_device {
"Xonar U7" 1
...
}
The outputs of pactl list and aplay -L are attached.
So, what shall I do with pulseaudio to recognize the iec958 output?
** Attachment added: "aplay -L output"
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1498129/+attachment/4585449/+files/aplay-L.txt
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Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1498129
Title:
Asus Xonar U7 S/PDIF output not recognized by pulseaudio
Status in alsa-driver package in Ubuntu:
New
Bug description:
The external USB audio card Asus Xonar U7 is capable of both analog and
digital output.
ALSA name for the digital (S/PDIF) output is hw:1,1, and it is listed in
aplay -l output, and aplay can output to it:
aplay -D plughw:1,1 sample.wav. So, direct alsa sound works fine.
However, pulseadio does not recognize the digital output of Xonar U7,
it offers only analog output.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11.1
ProcVersionSignature: Ubuntu 3.13.0-63.103-lowlatency 3.13.11-ckt25
Uname: Linux 3.13.0-63-lowlatency i686
ApportVersion: 2.14.1-0ubuntu3.13
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: aoand 3756 F.... pulseaudio
/dev/snd/controlC0: aoand 3756 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Sep 21 21:29:54 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-02-20 (1674 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007.1)
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to trusty on 2014-05-19 (490 days ago)
dmi.bios.date: 11/29/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 7WET71WW (3.21 )
dmi.board.name: 7448CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr7WET71WW(3.21):bd11/29/2012:svnLENOVO:pn7448CTO:pvrThinkPadX200Tablet:rvnLENOVO:rn7448CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7448CTO
dmi.product.version: ThinkPad X200 Tablet
dmi.sys.vendor: LENOVO
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