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R-Pi 2 model B USB sound issue

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lazrhog:
I tried using USB Audio with retropie, and I get sound in the main menu, but when mame4all starts, every rom generates an error trying to initialise sound, saying it can't do it.  any ideas ? 

Error message is :
lvl0:   VolumeControl::init() - Failed to find mixer elements!

Jefferson:
Hey Nitro-- Step 6 is where I'm stuck (http://computers.tutsplus.com/articles/using-a-usb-audio-device-with-a-raspberry-pi--mac-55876).  I can't seem to get "amixer" to reflect the usb change upon restart.

Also in my experiments I learned that my root/.soundarc gets reset everytime I reboot, back to Card 1 (the onboard sound).  I've tried changing it in the GUI and in Terminal to Card 0 and it won't stick.  Alsamixer reflects this correctly.  No options in Alsamixer seem to be helping either

Also, for whatever reason, the games are starting to at least launch now (although still without sound).  The frontend continues to have sound.

Anyone know what'd be re-setting my amixer?  my  /.soundarc?
I read somewhere that PulseAudio might be interfering.  Dunno if I have that.
I'd still love to locate a sound setting in mame4all to experiment with...

 :banghead:

nitrogen_widget:
ok.
I still don't use external sound cards but I did find this out on stack exchange and maybe it will help because it sounds a lot like the issue you are having.
Are you using root or SU or whatever is required by your OS to gain admin rights to edit those config files?
Sometimes you have to open the editor as root in order to get settings to stick because some desktop environs dont even bother to tell you that you can't write to the config file.

http://raspberrypi.stackexchange.com/questions/19705/usb-card-as-my-default-audio-device

thestobbster:
I have been using a Griffin iMic. They are more expensive than some of the other usb audio devices but it is worth it. The sound quality is Crystal Clear.

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