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. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1267866/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp