LinuxQuestions.org - [SOLVED] Alsa configuration on Raspberry Pi

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Alsa configuration on Raspberry Pi

Hello all,

On a new Jessie install, the system can see my soundcard but is unable to play any sound through it (a Presonus Audiobox USB).
It works fine on my laptop with Debian Jessie though, so I'm guessing there would be a way to make it work on Raspbian, wouldn't it ?

This my configuration and the content of .asoundrc
I tried many thing from documentations of alsa and looking at sample rate and hwparams but couldn't get it to work.

Thank you
Pablo

Code:

pi@raspberrypi:~ $ dmesg | grep Audio

[    3.955481] usb 1-1.5: Product: AudioBox USB

[    3.955494] usb 1-1.5: Manufacturer: PreSonus Audio

Code:

pi@raspberrypi:~ $ lsusb

Bus 001 Device 004: ID 194f:0302 PreSonus Audio Electronics, Inc.

Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter

Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Code:

pi@raspberrypi:~ $ aplay -l

**** List of PLAYBACK Hardware Devices ****

card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]

  Subdevices: 8/8

  Subdevice #0: subdevice #0

  Subdevice #1: subdevice #1

  Subdevice #2: subdevice #2

  Subdevice #3: subdevice #3

  Subdevice #4: subdevice #4

  Subdevice #5: subdevice #5

  Subdevice #6: subdevice #6

  Subdevice #7: subdevice #7

card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 1: USB [AudioBox USB], device 0: USB Audio [USB Audio]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

Code:

pi@raspberrypi:~ $ cat /home/pi/.asoundrc

pcm.!default {

    type hw

    card 1

}



ctl.!default {

    type hw

    card 1

}

Code:

pi@raspberrypi:~ $ speaker-test



speaker-test 1.0.28



Playback device is default

Stream parameters are 48000Hz, S16_LE, 1 channels

Using 16 octaves of pink noise

Sample format not available for playback: Invalid argument

Setting of hwparams failed: Invalid argument

Is PulseAudio in use? If so, what is reported by the following?

Code:

pactl list short sources

Code:

pactl list short sinks

Hello Ferrari and thank you for your answer,
I am not sure to understand completely what is pulseaudio. I have looked it up but I'm still confused. I would be interested in an explanation :)
These are the result for the 2 commands you asked me :

Code:

pactl list short sources

Connection failure: Connection refused

pa_context_connect() failed: Connection refused

Code:

pactl list short sinks

Connection failure: Connection refused

pa_context_connect() failed: Connection refused

Also, I'm sorry but I am new to LQ and first thought my thread didn't get posted since it didn't appear in my profile and the forum, even a couple of hours after posting, so I guessed I must have had posted it in the wrong section, and ended up double posting ... Here is the second thread where I also got an answer : turns out it was a .asoundrc syntax problem
http://www.linuxquestions.org/questi....php?p=5682936
Thank you for your help anyways

I'll just refer you to the Debian PulseAudio Wiki. When installed it sits above the ALSA layer as a sound server.

Quote:

It's main purpose is to provide a high level interface for controlling how multiple "sources" (programs that want to play sounds) are connected to "sinks" (sound cards).