Though this fix was tested on an MSI X320 running Ubuntu 14.04, it should work fine on most other Poulsbo based devices. Please let me know your device make, model, if it did / did not work for you.
Just run this command in Terminal:
sudo echo "options snd-hda-intel position_fix=1" >> /etc/modprobe.d/alsa-base.conf
Then restart for the settings to apply.