the link report error (spanish) http://foros.ubuntu-cl.org/viewtopic.php?p=15353
** Attachment added: "speaker-test -c2" http://launchpadlibrarian.net/9525945/error_alsa.txt -- stereo sound is upmixed to 5.1 by default on hda nvidia (nforce) https://bugs.launchpad.net/bugs/122896 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
