[solved] Asus xonar U7 IE958 missing

[drizzt]

Hi,
I just bought a Asus Xonar U7. I searched the internet before and it is stated that this soundcard works (pretty well) with linux. Now I plugged this thing in and of course nothing works.
What I did:
- removed old soundcard
- compiled snd_usb_audio (in kernel)
- plugged in Xonar (USB 2.0)
- rebooted PC

Result:
I have a Xonar sound card:

Code: Select all

aplay -l
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: HDMI [HDA ATI HDMI], Gerät 3: HDMI 0 [HDMI 0]
  Sub-Geräte: 0/1
  Sub-Gerät #0: subdevice #0
Karte 0: HDMI [HDA ATI HDMI], Gerät 7: HDMI 1 [HDMI 1]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: HDMI [HDA ATI HDMI], Gerät 8: HDMI 2 [HDMI 2]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: HDMI [HDA ATI HDMI], Gerät 9: HDMI 3 [HDMI 3]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: HDMI [HDA ATI HDMI], Gerät 10: HDMI 4 [HDMI 4]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 1: Generic [HD-Audio Generic], Gerät 0: ALC887-VD Analog [ALC887-VD Analog]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 1: Generic [HD-Audio Generic], Gerät 1: ALC887-VD Digital [ALC887-VD Digital]
  Sub-Geräte: 0/1
  Sub-Gerät #0: subdevice #0
Karte 2: U7 [Xonar U7], Gerät 0: USB Audio [USB Audio]
  Sub-Geräte: 0/1
  Sub-Gerät #0: subdevice #0
Karte 2: U7 [Xonar U7], Gerät 1: USB Audio [USB Audio #1]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 2: U7 [Xonar U7], Gerät 2: USB Audio [USB Audio #2]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0

But I don't have mixer controls for IEC958:

Code: Select all

amixer -c2
Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer - Side Left - Side Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 107 [84%] [-20.00dB] [on]
  Front Right: Playback 107 [84%] [-20.00dB] [on]
  Rear Left: Playback 107 [84%] [-20.00dB] [on]
  Rear Right: Playback 107 [84%] [-20.00dB] [on]
  Front Center: Playback 107 [84%] [-20.00dB] [on]
  Woofer: Playback 107 [84%] [-20.00dB] [on]
  Side Left: Playback 107 [84%] [-20.00dB] [on]
  Side Right: Playback 107 [84%] [-20.00dB] [on]
Simple mixer control 'PCM Capture Source',0
  Capabilities: enum
  Items: 'Mic' 'Line'
  Item0: 'Mic'
Simple mixer control 'PCM',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Line',0
  Capabilities: cswitch cswitch-joined
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Mic',0
  Capabilities: cswitch cswitch-joined
  Capture channels: Mono
  Mono: Capture [on]
Simple mixer control 'Clock Source 18 Validity',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Clock Source 19 Validity',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Clock Source 22 Validity',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Input Gain Pad Control',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 2
  Front Left: 2 [100%]
  Front Right: 2 [100%]

As a result I cannot unmute IEC958 channel(s) and therefor hear no sound

Anybody any idea where to look ?

[Perfect Gentleman]

compiled snd_usb_audio (in kernel)

compile it as module

[drizzt]

Hi,
I tried that but sadly still no IEC958 mixing option:

Code: Select all

lsmod
Module                  Size  Used by
rpcsec_gss_krb5        20877  0
fuse                   77671  0
snd_usb_audio         129386  0
snd_usbmidi_lib        18810  1 snd_usb_audio
snd_rawmidi            16379  1 snd_usbmidi_lib
ghash_clmulni_intel     4104  0

[Perfect Gentleman]

afir, there is no clear IEC958 option for USB-audio.
do you have pulseaudio? imo, that option can be found in pulseaudio controls.

[drizzt]

Well, at least a mixer entry should be available otherwise I cannot unmute it.

Also this link says a mixer entry should be available: http://archive.is/wXgtZ

All my soundcards so far had at least a mixer entry for unmuting IEC958.

[drizzt]

I solved it, but the solution is not obvious (at least to me):
You have to follow the description in the link I posted but ignore the fact that you have no mixer entry for IEC958. As soon as you modified the Alsa-USB config and rebooted the machine, there will be mixer entry in pusleaudio named IEC958. But the sound still doesn't work, because the output is still muted. Now if you open the alsamixer for the Xonar U7, you'll find an entry named "PCM 1" and this one is muted. Unmute it and voilá sound is working. Even the volume wheel on the sound card is working perfectly fine (if you don't passthrough of course).