I was watching a movie ( already watched ) on my openelec installation then suddenly my home theatre began to switch between modes DTS/Dolby digital... Etc that's come together with a loud noise.
After restarting and unplug/plug the digital in my rpi2b, I have no more sound and the following message in dmesg :
snd-hifiberry-digi sound: snd_soc_register_card() failed: -517
Does anyone have already the same message?