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nVidia High Definition Audio/HDMI HD | NVIDIA GeForce …
https://www.nvidia.com/en-us/geforce/forums/gaming-pcs/8/31538/nvidia-high-definition-audiohdmi-hd-audio-with-nfo/
The Nvidia website give two options to update drivers: 1) identify the mainboard by Chipset (which yields in v14.10 drivers); or 2) allow the site to "discover" the chipset and identify the proper drivers (which yeilds international ver 15 of the drivers) this option is beta. In each case the new drivers fail on HD sound over the HDMI audio device.
Digital Audio Tutorial - MythTV Official Wiki
https://www.mythtv.org/wiki/Digital_Audio_Tutorial
Update nvidia drivers. It has been suggested by some that you update the Nvidia driver if you are using HDMI. Most have said this is not necessary. Upgrading broke one of my systems so you might do this only if needed. See AGP and XvMC note below. Mythbuntu users can use envy and select install Nvidia driver. $ envyng -t
Mythbuntu, GT220, HDMI Audio - Linux/BSD
https://forums.whirlpool.net.au/archive/1344943
Fresh install of Mythbuntu 9.10; Installing the Nvidia proprietary drivers (I've used the latest beta drivers as I've googled and these are the supposedly the only ones that currently support audio over HDMI for my card) Compiling 1.0.22 version of ALSA drivers, utils, and lib (since this version supposedly supports the nvidia sound device)
Configuring Analog Sound DVI to HDMI - MythTV Official …
https://www.mythtv.org/wiki/Configuring_Analog_Sound_DVI_to_HDMI
Newer nVidia hardware supports audio over HDMI. When a display device notifies the drivers that it will accept audio, the card will provide an audio stream. This will occur on both HDMI and DVI ports, whether or not the card has pass-through audio inputs.
[SOLVED] No sound with PulseaAudio / NVidia / HDMI ...
https://forum.mythtv.org/viewtopic.php?t=3088
I have an NVidia card with HDMI output but MythTV is unable to control the volume. Same with alsamixer. I had hoped that using a sound server might provide this function so that I can get mythtv to control volume instead of using the TV remote control.
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