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[Julian <1267866@xxxxxxxxxxxxxxxxxx>]

I'm having this issue since I bought this card (Asus xonar u7) and I still having the issue in Ubuntu 14.10.
Here is the my alsa-info:  http://www.alsa-project.org/db/?f=a96562a3fb187b1d8bb189d6cc67b5b90df0fa42

The only way to use the card is by loading the snd usb driver with
ignore_ctl_error=1

Let me know if you need help to debug/test a possible fix/patch.

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https://bugs.launchpad.net/bugs/1267866

Title:
  usb audio: cannot get ctl value: req = 0x81, wValue = 0x0, wIndex =
  0x1400, type = 3

Status in alsa-driver package in Ubuntu:
  Confirmed

Bug description:
  I typed in terminal:

      alsamixer

  Then I wanted to change the sound card (I have connected an external
  sound card via USB).

  I pressed F6, selected the external sound card and pressed enter.

  alsamixer crashed and outputed:

      cannot load mixer controls: Broken pipe

  My ALSA information is located at http://www.alsa-
  project.org/db/?f=1871c086b58a2965d18cfb38483794788187edfb

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