[pulseaudio-discuss] profile-set for CMEDIA USB2.0 High-Speed True HD Audio (147a:e055)

[Jean-Philippe Guillemin]

No matter what match string I tried, ALSA never changed the device for
iec958.


root[~]# cat /proc/asound/cards
 0 [Audio          ]: USB-Audio - USB2.0 High-Speed True HD Audio
                      CMEDIA USB2.0 High-Speed True HD Audio at
usb-0000:00:12.2-2, high speed

In USB-Audio.conf :

# If a device does not use the first PCM device for digital data, the device
# number for the iec958 device can be changed here.
USB-Audio.pcm.iec958_device {
    # "NoiseBlaster 3000" 42
    "USB Sound Blaster HD" 1
    "USB2.0 High-Speed True HD Audio" 2
...

JP



2018-01-29 9:59 GMT+01:00 Jean-Philippe Guillemin <h1p8r10n at gmail.com>:

> Thanks for your inputs :)
>
> I'm going to try fixing from ALSA, but I'm not sure it's so easy cause
> this card has input SPDIF on device #0 and output SPDIF on device #2.
>
> I ended with this , for PA profile :
>
> [Mapping iec958-stereo]
> device-strings = hw:%f,2 hw:%f,0
> channel-map = left,right
> paths-output = iec958-stereo-output
> paths-input = iec958-stereo-input
> priority = 5
>
>
> JP
>
> 2018-01-29 0:12 GMT+01:00 Tanu Kaskinen <tanuk at iki.fi>:
>
>> On Fri, 2018-01-26 at 23:15 +0100, Jean-Philippe Guillemin wrote:
>> > Hi,
>> >
>> > After some investigation on how to make the optical iec958 output work
>> on
>> > my CMEDIA based usb DAC, I finally found a solution : a profile-set has
>> to
>> > be added for this device.
>> >
>> > Added to udev 90-pulseaudio.rules :
>> >
>> > ATTRS{idVendor}=="147a", ATTRS{idProduct}=="e055",
>> > ENV{PULSE_PROFILE_SET}="cmedia-high-speed-true-hdaudio.conf"
>> >
>> > Added profile set
>> > /usr/share/pulseaudio/alsa-mixer/profile-sets/cmedia-high-
>> speed-true-hdaudio.conf
>> > (only specific part below) :
>> >
>> > ----------(default)------------
>> >
>> > [Mapping iec958-stereo]
>> > device-strings = hw:%f,2
>> > channel-map = left,right
>> > paths-input = iec958-stereo-input
>> > paths-output = iec958-stereo-output
>> > priority = 5
>> >
>> > ----------(default)------------
>> >
>> > I hope this profile-set will be added to pulseaudio.
>>
>> It's better to fix this in alsa. I believe you can do the required
>> change in /usr/share/alsa/cards/USB-Audio.conf quite easily. The "USB-
>> Audio.pcm.iec958_device" section seems to contain rules for setting the
>> correct iec958 device number for specific sound cards (the correct
>> number is 2 in your case). I'm not sure where to get the right match
>> string for your card, though. I would guess that it's visible in
>> /proc/asound/cards. For example, I have this entry for my usb sound
>> card:
>>
>>  1 [C10            ]: USB-Audio - CA DacMagicXS 1.0
>>                       CA CA DacMagicXS 1.0 at usb-0000:00:1a.0-1, full
>> speed
>>
>> I would guess that "CA DacMagicXS 1.0" would be the correct match
>> string for this card.
>>
>> If you manage to edit USB-Audio.conf so that you don't need the
>> modification in PulseAudio, then either send a patch to alsa, or tell
>> what change you did and I'll send the patch for you.
>>
>> --
>> Tanu
>>
>> https://liberapay.com/tanuk
>> https://www.patreon.com/tanuk
>> _______________________________________________
>> pulseaudio-discuss mailing list
>> pulseaudio-discuss at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>
>
>
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