Recommend installing alsamixer it will grab those settings from your PCM card and you can modify the settings as you wish.
Installing
Install with Command Line
Adding the ppa
sudo add-apt-repository ppa:ubuntu-audio-dev/ppa
sudo apt-get update
Install the linux-alsa-driver-modules package
sudo apt-get install linux-alsa-driver-modules-$(uname -r)
Note: After installing the linux-alsa-driver-modules package, your system needs to be rebooted.

If you need other information or troubleshooting refer to:
https://help.ubuntu.com/community/SoundTroubleshooting