You were right, I had ppa2 install for some reason last time. I reinstalled and checked out the dmesg output and there's a ton of ALSA stuff in it now, so I think I've got the right thing going on. Third time's a charm, hopefully.
** Attachment added: "dmesg.txt" http://launchpadlibrarian.net/39036258/dmesg.txt -- Sound simultaneously on headphones and speakers - Lenovo IdeaPad u350 https://bugs.launchpad.net/bugs/477226 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