Comment 6 for bug 550655

add-apt-repository ppa:ubuntu-audio-dev/ppa

installed linux-alsa-driver-modules-2.6.xx-xx( matches my kernel )

vim /etc/modprobe.d/sound.conf

-- added the following for NV GT220

options snd-hda-intel enable_msi=0 probe_mask=0xffff,0xfff2

-- saved and rebooted

 aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC883 Analog [ALC883 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC883 Digital [ALC883 Digital]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: NVidia_1 [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

cat /proc/asound/NVidia_1/codec#* | grep HDMI
Codec: Nvidia GT220 HDMI
  Device: name="NVIDIA HDMI", type="HDMI", device=3
  Pincap 0x09000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI

aplay -D plughw:1,3 /usr/share/sounds/alsa/Noise.wav
speaker-test -Dhdmi:NVidia_1 -c6

now it works and I didn't disable the other sound card either