Re: [Solved} logitech z515 wireless speaker not working

[Pierre Frenkiel <pierre.frenkiel@gmail.com>]

At last, I could solve the problemm. In case anybody is interested,
here is how:

in /etc/modprobe.d/alsa-base.conf:
   options snd-usb-audio index=1

After that, and reboot, the Z515 is seen in /proc/asound/cards, and in 'aplay -L'
and the sound works with vlc or audacity, but not with aplay, speaker-test,
mplayer.
The output of these 3 programs is very instructive, and IMHO should be given
as an example in all programmers' schools!

-> speaker-test
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
Playback open error: -2,No such file or directory

->aplay woow.wav
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
aplay: main:722: audio open error: No such file or directory

-> mplayer file.mp3
   ... open '/dev/snd/pcmC1D1p' failed (-2): No such file or directory

with the first 2, impossiblle to guess what's wrong or missing.
with the 3rd one, you have the answer: just do

      ->sudo ln -s /dev/snd/pcmC1D0p /dev/snd/pcmC1D1p

and that's it! 
Still difficult to understand why it worked with vlc, as it is configured to
use the Alsa output.

cheers,
--
Pierre Frenkiel