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HDMI missing from playback devices - Microsoft Community

    https://answers.microsoft.com/en-us/windows/forum/all/hdmi-missing-from-playback-devices/1f5d1464-4289-46fe-9ba7-04b3011f5794#:~:text=If%20you%20do%20not%20have%20the%20HDMI%20Output,appears%2C%20right-click%20HDMI%20Output%20and%20select%20Default%20Device.
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HDMI audio disappeared from playback devices and ... - …

    https://www.nvidia.com/en-us/geforce/forums/geforce-graphics-cards/5/171114/hdmi-audio-disappeared-from-playback-devices-and-w/
    I've encounter this before but menage to fix it. 1. Disable motherboard HDMI control 2. Uninstall onboard audio or disable it 3. Do a clean driver uninstall 4. Install 327.23 5. Check playback and you should have Marantz AVAMP-1 on list (Mine is SONY AVAMP-1) Also check your receiver if it have a setting that able to output sound from AMP only.

Missing HDMI audio output(device unplugged), NVidia …

    https://askubuntu.com/questions/821620/missing-hdmi-audio-outputdevice-unplugged-nvidia-audio-card-not-detected
    00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 525M] (rev a1) As you can see, there is no HDMI audio device listed. Things I've tried (with the help of various other links):

How To Fix Nvidia High Definition Audio No Sound On …

    https://thedroidguy.com/how-to-fix-nvidia-high-definition-audio-no-sound-on-windows-10-1144387
    In order to fix Audio problem with Nvidia, you need to RUN Audio Troubleshooter At the search bar on your Windows, type “Troubleshooting” Click on Troubleshooting settings result. At …

How to Fix the NVIDIA High Definition Audio no Sound ...

    https://appuals.com/how-to-fix-the-nvidia-high-definition-audio-no-sound-problem-on-windows/
    Change Your Audio Output Device. It’s quite possible that a recent change such as a new …

No HDMI audio output in Device Manager - Microsoft Community

    https://answers.microsoft.com/en-us/windows/forum/all/no-hdmi-audio-output-in-device-manager/0995305a-28f9-4a02-bd27-d2e30896360b
    In the “Troubleshooting” window, click on “View All” on the left pane. Click on “Playing Audio”. Click on “Advanced” and then click on “Run as Administrator”. Click “Next” and follow the on-screen instructions to complete the troubleshooting process. Method 2: Run the Hardware and Devices Troubleshooter by connecting HDMI cable.

To set up digital audio on your graphics card - Nvidia

    https://www.nvidia.com/content/Control-Panel-Help/vLatest/en-us/mergedProjects/nvdsp/To_set_up_digital_audio_on_your_graphics_card.htm
    To set up digital audio on your graphics card. From the NVIDIA Control Panel navigation tree pane, under Display, click Set up digital audio to open the associated page. The Set Up Digital Audio page lists the NVIDIA GPUs in the system that have audio-capable display connections, and then lists those connections (HDMI, DisplayPort, or DVI). For each connection, this page lists …

HDMI Audio on NVIDIA GPUs

    https://download.nvidia.com/XFree86/gpu-hdmi-audio-document/
    Under-Enumeration of HDMI Devices 12. Trouble-shooting 12.1. Upgrading Your ALSA Driver 12.2. Verify Your Card Exists 12.3. Verify Your CODEC Is Known/Supported 12.4. X Driver Must Be Running 12.5. Verify Your ELD Is Valid 12.6. Ensure All HDMI Outputs Are Unmuted 12.7. Test Playback With ALSA Physical Devices 12.8. High-Bandwidth Audio 12.9.

No audio in Steam Link App. "NVIDIA HDMI Out" missing from ...

    https://www.reddit.com/r/ShieldAndroidTV/comments/9nc77s/no_audio_in_steam_link_app_nvidia_hdmi_out/
    I figured out that it is also the only app that does not bring up the "NVIDIA HDMI Out" audio device in the Windows 10 audio devices list (it ONLY has the Steam Streaming device running). Here is a photo of the default Steam (non-link) app where the sound IS working, which DOES use the NVIDIA HDMI Out.

Missing audio driver for Quadro RTX (Windows, 511.09 ...

    https://forums.developer.nvidia.com/t/missing-audio-driver-for-quadro-rtx-windows-511-09/201250
    It is not possible to output sound via DP/HDMI to a conncected Display/TV. Although the NVIDIA control panel shows the sound capability of the connected device, I’m not able to select the device as sound output in Windows sound settings. I tested the sound output on Linux (Ubuntu) and it works.

No HDMI Audio Output - APLAY does not detect NVIDIA GPU

    https://unix.stackexchange.com/questions/393833/no-hdmi-audio-output-aplay-does-not-detect-nvidia-gpu
    You seem to have Intel HD Audio, not NVidia HD Audio, although in most cases the audio chipset is from 3rd party OEM. What I found working was to run alsamixer, press F6, select HDA whatever (in your case it would be Intel HDA or something), then scroll to S/PDIF, then enable it.

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