On 02/18/2014 05:27 PM, Mfdpro Mei wrote:
> 2014-02-18 13:13 GMT-03:00 Daniel Mack <dan...@zonque.org>:

>> What does 'aplay -l' and 'cat /proc/asound/cards' say? How did you test
>> the audio output?
> 
> I tried to test it using "aplay -vv <music>", but it didn't play any sound.

...

> miguel@miguel-pc:~$ cat /proc/asound/cards
>  0 [PCH            ]: HDA-Intel - HDA Intel PCH
>                       HDA Intel PCH at 0xf1c00000 irq 54
>  1 [ME80           ]: USB-Audio - ME-80
>                       BOSS ME-80 at usb-0000:04:00.0-1, high speed

Try 'aplay -Dhw:1 <music>'

> miguel@miguel-pc:~$ dmesg | grep "57\."
> [   57.649379] usb 3-1: new high-speed USB device number 2 using xhci_hcd
> [   57.669461] usb 3-1: New USB device found, idVendor=0582, idProduct=0178
> [   57.669474] usb 3-1: New USB device strings: Mfr=1, Product=2, 
> SerialNumber=0
> [   57.669480] usb 3-1: Product: ME-80
> [   57.669485] usb 3-1: Manufacturer: BOSS
> [   57.754130] snd-usb-audio: probe of 3-1:1.0 failed with error -5
> [   57.759231] usbcore: registered new interface driver snd-usb-audio
> [   57.839847] Unable to change format on ep #8e: already in use

Did any application like PulseAudio grab the device already? If so, you
might need to temporarily disable it using 'pasuspender'.


Daniel



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