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Everything on my system says I should have surround sound 5.1, but sound tests are only stereo. I have a MCP79 Nvidia chipset with an ALC888 audio codec. I seem to be fixated on the fact that alsa mixer only says stereo instead of 6 channels, although Im not sure if that is a cause of an effect. I did change the daemon.conf from 2 to 6 channels.

    aplay -L
default
Playback/recording through the PulseAudio sound server
sysdefault:CARD=NVidia
   HDA NVidia, ALC888 Analog
   Default Audio Device
front:CARD=NVidia,DEV=0
   HDA NVidia, ALC888 Analog
   Front speakers
surround40:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
   4.0 Surround output to Front and Rear speakers
surround41:CARD=NVidia,DEV=0
   HDA NVidia, ALC888 Analog
   4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=NVidia,DEV=0
   HDA NVidia, ALC888 Analog
   5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
  5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
  7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Digital
  IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=NVidia,DEV=0
  HDA NVidia, HDMI 0
  HDMI Audio Output
dmix:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
  Direct sample mixing device
dmix:CARD=NVidia,DEV=1
  HDA NVidia, ALC888 Digital
  Direct sample mixing device
dmix:CARD=NVidia,DEV=3
  HDA NVidia, HDMI 0
  Direct sample mixing device
dsnoop:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
  Direct sample snooping device
dsnoop:CARD=NVidia,DEV=1
  HDA NVidia, ALC888 Digital
  Direct sample snooping device
dsnoop:CARD=NVidia,DEV=3
  HDA NVidia, HDMI 0
  Direct sample snooping device
hw:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
  Direct hardware device without any conversions
hw:CARD=NVidia,DEV=1
  HDA NVidia, ALC888 Digital
  Direct hardware device without any conversions
hw:CARD=NVidia,DEV=3
  HDA NVidia, HDMI 0
  Direct hardware device without any conversions
plughw:CARD=NVidia,DEV=0
  HDA NVidia, ALC888 Analog
  Hardware device with all software conversions
plughw:CARD=NVidia,DEV=1
  HDA NVidia, ALC888 Digital
  Hardware device with all software conversions
plughw:CARD=NVidia,DEV=3
  HDA NVidia, HDMI 0
  Hardware device with all software conversions

Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC888 Analog [ALC888 Analog]
   Subdevices: 1/1
Subdevice #0: subdevice #0
    card 0: NVidia [HDA NVidia], device 1: ALC888 Digital [ALC888 Digital]
Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
share|improve this question
    
Does speaker-test -D hdmi -c 6 -t wav work? If not, does it work if you use -c 2 instead? –  CL. May 5 '13 at 11:22
    
Hi... -c 6 only gave me audio in FL and FR. Obviously the same with -c 2 –  user155635 May 5 '13 at 15:17
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