Hi Macarena, This is issue is solved, and I am changing its status to "fix-released".
Anyway, in the file /etc/modprobe.d/alsa-base.conf I have the following statement: options snd-hda-intel power_save=10 power_save_controller=N model=3stack-6ch I think "power save" options where not inserted by me, but the last one tells to the peripheral to use 5+1 channels. And this sound card, in order to switch from 2 channels to 5+1, required for me some jumper setting on the motherboard (which of course I don't remember exactly). -- audio surround 5.1 stopped working after updating https://bugs.launchpad.net/bugs/450336 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
