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Third3ye

Member

Registered: 2013-02-17

Posts: 5

Audio won't work over DisplayPort-HDMI (MCP89, Nouveau)

Hey there. I got a problem getting audio working over HDMI using DisplayPort on my MacBook7,1 which I boot via
rEFInd in EFI mode. The laptop has Nvidia GeForce 320M (NV50) with MCP89 High Definition Audio which, according
to the nouveau support matrix, works with the nouveau driver. I'm using PulseAudio and it outputs several HDMI profiles
but none that actually work.Here's a list of the profiles made by "aplay -L":

pulse
    PulseAudio Sound Server
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=NVidia
    HDA NVidia, Cirrus Analog
    Default Audio Device
front:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Analog
    Front speakers
surround40:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=NVidia,DEV=0
    HDA NVidia, Cirrus Digital
    IEC958 (S/PDIF) Digital Audio Output
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

When running the command "aplay --device=hdmi:CARD=NVidia,DEV=0 /usr/share/sounds/alsa/Front_Center.wav"
including DEV=1 and DEV=2 I get the error "aplay: set_params:1108: Channels count non available", if that tells you
anything. Also there's the output from alsa-info.sh:

http://www.alsa-project.org/db/?f=c61aa … ecc1d0f3cf

If anyone can shed some light over this situation I'd appreciate it..

vigolino

Member

Registered: 2009-04-05

Posts: 12

Re: Audio won't work over DisplayPort-HDMI (MCP89, Nouveau)

Did you ever get this to work? If so, how?