USB audio device

[renrom]

Hi,

I want to use an USB audio device with the Pi2. After installing it, no games are started anymore. The following error i can see quickly on the screen:

lvl0: VolumeControl::init() – Failed to find mixer elements

In the /tmp/runcommand.log this error is showing up:
ALSA lib pcm.c:7431:(snd_pcm_set_params) Rate doesn’t match (requested 44100Hz, get 0Hz)

If i try to play a sound from the commandline with aplay /usr/share/sounds/alsa/Front_Left.wav it does play the sound.

Any idea to fix this?

[renrom]

Ok, after digging around a bit, this seem to work:

Creating a file /etc/asound.conf with the following:

ctl.!default {
type hw
card 0
}
pcm.usb
{
type hw
card "U012529205"
format S16_LE
}

pcm.!default {
type asym
playback.pcm
{
type plug
slave {
pcm "hw:0"
format S16_LE
}
}
capture.pcm
{
type plug
slave.pcm "usb"
}
}

and comment the line ‘options snd-usb-audio index=-1’ in the /etc/modprobe.d/alsa-base.conf

Only part what still dont have sound is the splashvideo, will try figure out that one aswell. :)

[lilbud]

Use this website http://plugable.com/2014/11/06/how-to-switch-to-usb-audio-on-raspberry-pi works perfectly, and it automatically switch depending on if the adapter is plugged in on boot.

[renrom]

i will try and test that later, although I think I also tried that. Without the /etc/asound.conf I will probably get the pcm error.

[renrom]

Tested it, and the /etc/asound.conf is realy neccesary to make the usb sound work with ES.

[Author]

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