Comment 7 for bug 1020331

After adding options snd-hda-intel model=ref to alsa-base.conf
elixirs@envy ~ $ sudo lshw -C sound
  *-multimedia
       description: Audio device
       product: 6 Series/C200 Series Chipset Family High Definition Audio Controller
       vendor: Intel Corporation
       physical id: 1b
       bus info: pci@0000:00:1b.0
       version: 05
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=snd_hda_intel latency=0
       resources: irq:53 memory:c9700000-c9703fff