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#1 2017-11-24 08:34:38

kflak
Member
Registered: 2017-09-23
Posts: 52

[SOLVED] NVIDIA HDMI sound output not working properly

I am having trouble getting the sound to work through HDMI on my MacBook Pro mid-2013. Running

speaker-test -Dhdmi:NVidia,1 -c 2 -l 1

gives the expected result, but I don't get any sound from any jack-aware application. I have set the correct sound card in Cadence, I have long since removed PulseAudio (but maybe there are traces left of it on the system that are messing things up?).
The output of

aplay -L

is

null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
sysdefault:CARD=PCH
    HDA Intel PCH, CS4208 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    Front speakers
surround21:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=PCH,DEV=0
    HDA Intel PCH, CS4208 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 1
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
    HDA NVidia, HDMI 2
    HDMI Audio Output

Where would I start to figure out what the bug is?

Grateful for any help on this!

Best,
K

Last edited by kflak (2017-11-24 08:41:45)

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#2 2017-11-24 08:41:25

kflak
Member
Registered: 2017-09-23
Posts: 52

Re: [SOLVED] NVIDIA HDMI sound output not working properly

OK, so this is embarrasing... After a couple of weeks of troubleshooting I accidently stumbled on the solution: simply to reboot the machine while plugged into the HDMI cable. Hotswapping and audio is appearantly not playing well together yet. Guess I have to read up on udev rules...

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