Comment 5 for bug 441746

I still can't use HDMI audio output. If I select Digital Stereo (IEC958) Output in Sound Preferences, no sound comes out. I have everything unmuted with alsamixer. My alsa version is 1.0.20+dfsg-1ubuntu5 and pulseaudio 1:0.9.19-0ubuntu4.1.

Any ideas?

$ aplay -l && aplay -L
**** Lista de Dispositivos PLAYBACK Hardware ****
placa 0: Intel [HDA Intel], dispositivo 0: ALC663 Analog [ALC663 Analog]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
placa 0: Intel [HDA Intel], dispositivo 1: ALC663 Digital [ALC663 Digital]
  Dispositivo secundário: 0/1
  Dispositivo secundário #0: subdevice #0
front:CARD=Intel,DEV=0
    HDA Intel, ALC663 Analog
    Front speakers
surround40:CARD=Intel,DEV=0
    HDA Intel, ALC663 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
    HDA Intel, ALC663 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
    HDA Intel, ALC663 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
    HDA Intel, ALC663 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
    HDA Intel, ALC663 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Intel,DEV=0
    HDA Intel, ALC663 Digital
    IEC958 (S/PDIF) Digital Audio Output
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    Playback/recording through the PulseAudio sound server

$ lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)