[pulseaudio-discuss] Nvidia HDMI audio 5.1 surround sound

[Matthew Robinson]

Hi,

I have an  Asus Nvidia GeForce 210 graphics card and am using the HDMI
cable connected to my TV ( which connects to the surround sound unit ).
I've only managed to get this to work with the stereo output. If I use any
of the 5.1 options it's just silent ( although the signal monitor in paman
goes crazy as though it should be making noise ). Also when I use
speaker-test -c 6 on two of the outputs it goes through all 6 speakers and
seems to be working, but it is silent.

Any ideas?


Here's the output of aplay -L:

$ aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
default
    Playback/recording through the PulseAudio sound server
hdmi:CARD=NVidia,DEV=0
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    HDMI Audio Output
dmix:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Direct sample mixing device
dmix:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Direct sample mixing device
dmix:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Direct sample mixing device
dmix:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Direct sample mixing device
dsnoop:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Direct sample snooping device
dsnoop:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Direct sample snooping device
dsnoop:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Direct sample snooping device
dsnoop:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Direct sample snooping device
hw:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
hw:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
hw:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
hw:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Direct hardware device without any conversions
plughw:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
plughw:CARD=NVidia,DEV=7
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
plughw:CARD=NVidia,DEV=8
    HDA NVidia, HDMI 0
    Hardware device with all software conversions
plughw:CARD=NVidia,DEV=9
    HDA NVidia, HDMI 0
    Hardware device with all software conversions


$ dmesg | grep HDMI
[   19.320139] input: HDA NVidia HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:03.0/0000:02:00.1/sound/card0/input5
[   19.320259] input: HDA NVidia HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:03.0/0000:02:00.1/sound/card0/input6
[   19.320354] input: HDA NVidia HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:03.0/0000:02:00.1/sound/card0/input7
[   19.320467] input: HDA NVidia HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:03.0/0000:02:00.1/sound/card0/input8
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