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How do I connect HDMI to Ubuntu?
https://frameboxxindore.com/linux/how-do-i-connect-hdmi-to-ubuntu.html#:~:text=Right-click%20the%20%E2%80%9CVolume%E2%80%9D%20icon%20on%20the%20Windows%20taskbar%2C,%28extended%20desktop%29%20support%20out%20of%20the%20box.%20%E2%80%A6
No sound on HDMI Ubuntu 20.04 - Ask Ubuntu
https://askubuntu.com/questions/1256043/no-sound-on-hdmi-ubuntu-20-04
Open the audio mixer (it's called pavucontrol here) Switch to the Configuration tab (rightmost tab), There is a dropdown for selecting the profile for the builtin audio device. Here I could select a HDMI profile, just be careful to pick one that is not marked as not available. After that, audio through HDMI worked just fine.
Fix No Sound Through HDMI In External Monitor In Ubuntu ...
https://itsfoss.com/how-to-fix-no-sound-through-hdmi-in-external-monitor-in-ubuntu/
Type “sound” in Unity dash (by pressing the Super/Windows key) or from the top right corner choose the system settings and then look for sound setting. Step 2. In the sound settings, in Output tab the built-in-audio was set to Analog Stereo Duplex. Change the mode to HDMI output Stereo.
drivers - No sound via HDMI on Ubuntu 21.04 - Ask Ubuntu
https://askubuntu.com/questions/1355352/no-sound-via-hdmi-on-ubuntu-21-04
In Ubuntu Software as well I see no drivers for my video card. lspci Displays two audio devices: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) HD Audio Controller; In Settings > Sound > Output Device, there's only S/PDIF - Family 17h.
Unable to get audio through HDMI connection ... - Ask …
https://askubuntu.com/questions/512621/unable-to-get-audio-through-hdmi-connection-to-tv-with-ubuntu-14-04
If the command gives you errors on groups that don't exist, just ignore it. Install the latest ALSA drivers using the following commands: sudo add-apt-repository ppa:ubuntu-audio-dev/alsa-daily sudo apt-get update sudo apt-get install oem-audio-hda-daily-dkms. Reboot and check if audio over HDMI is working. Sources:
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