http://askubuntu.com/questions/491301/realtek-alc-3661
https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS
https://code.launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages
http:// askubuntu. com/questions/ 491301/ realtek- alc-3661
https:/ /wiki.ubuntu. com/Audio/ UpgradingAlsa/ DKMS
https:/ /code.launchpad .net/~ubuntu- audio-dev/ +archive/ ubuntu/ alsa-daily/ +packages