I have finally found the problem : In gnome volume manager, I had set "Multi Track Internal Clock" to IEC958 Input. I have change that value to 44100 and now, all is ok.
Perhaps, this could help someone ... -- snd-ice1712: no sound if SPDIF is unplugged https://bugs.launchpad.net/bugs/355263 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs