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How to Setup HDMI Digital Playback in Linux - Make Tech Easier
https://www.maketecheasier.com/setup-hdmi-digital-playback-in-linux/#:~:text=1%20Open%20System%20Settings%202%20Click%20on%20%E2%80%9CMultimedia%E2%80%9D,%E2%80%9CPrefer%E2%80%9D%20button%20until%20HDMI%20is%20at%20the%20top.
sound - How do I output audio through HDMI? - Ask Ubuntu
https://askubuntu.com/questions/226090/how-do-i-output-audio-through-hdmi
HDMI sound works fine under Win7 (after mobo and vid drivers are installed), so it's not physically broken. Audio through the normal headphone jacks works fine under Ubuntu. Looking at the audio panel, there is no HDMI output at all. aplay -l also reports only: card 0: Generic [HD-Audio Generic], device 0: ALC887-VD Analog [ALC887-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0
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.
Fix No Sound (Dummy Output) Issue In Ubuntu With SND HDA ...
https://www.linuxuprising.com/2018/06/fix-no-sound-dummy-output-issue-in.html
Update for no sound after unplugging HDMI cable. In case you've plugged in an HDMI cable, then unplugged it and you're no longer getting any sound on your Ubuntu desktop, the solution is quite simple. Plug in the HDMI device back and you should be able to switch back to the integrated / external speakers, then you can unplug the HDMI cable again.
No sound through HDMI - Ubuntu Mate 20.04 / Pi4 ...
https://ubuntu-mate.community/t/no-sound-through-hdmi-ubuntu-mate-20-04-pi4/22478
There was no option for HDMI Output though. There is a section of Sounds Preferences called Output, where you can select two identical looking "Built-in Audio Stereo" options. One has Connector set to "Analog Output", the other has "Headphones" - selecting "Analog Output" fixed the HDMI issue. dandnsmith 9 August 2020 18:31 #4
sound - How to disable audio of only one HDMI ...
https://askubuntu.com/questions/1390681/how-to-disable-audio-of-only-one-hdmi-displayport-port
I have two monitors connected via Displayport to different ports of the same GPU. I want to permanently disable audio of one monitor, and keep audio in the other one. Pavucontrol is very useful at disabling hardware entirely (i.e. the webcam's mic). But I cannot find a way to disable audio from Monitor 2 while keeping Monitor 1 intact.
Default audio output to HDMI - Raspberry Pi Stack Exchange
https://raspberrypi.stackexchange.com/questions/118819/default-audio-output-to-hdmi
Btw, Ubuntu 20.10 seems to use GDM to start pulseaudio, it's not a service and the daemonization is disabled. Also, pulse is known to be finnicky when independent digital and analog audio devices run off the same card... that may be …
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