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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/#:~:text=%5BSolution%5D%20Fix%20no%20Audio%20through%20HDMI%20in%20Ubuntu,not%20work%2C%20try%20changing%20the%20configuration...%20See%20More.
No sound on HDMI Ubuntu 20.04 - Ask Ubuntu
https://askubuntu.com/questions/1256043/no-sound-on-hdmi-ubuntu-20-04
The display on HDMI works just perfectly, but the audio is not working at all. I tried lots of solutions here on Ask Ubuntu, but the problem remains. Some of the solutions I tried are located in the following links: HDMI sound not working after upgrading to 20.04. Ubuntu 18.04: Audio doesn't work unless I switch between outputs. does not detect ...
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/
Fix no audio through HDMI in Ubuntu Solution 1: Change default sound setting. I saw a number of forum posts with trouble on the audio problem in extended monitor in Ubuntu. Thankfully this problem was not complex, at least in this case with Ubuntu 12.04. The reason in my case was that the default sound setting was “built-in speaker audio”.
Fixed: No Sound in Ubuntu as HDMI Enabled By Default
https://itsfoss.com/fix-sound-ubuntu-1404/
Fixing no sound in Ubuntu when HDMI is set as default. Now to force Ubuntu to use analog output instead of HDMI by default, we need a little information. Open a terminal and use the following command: aplay -l. This will list the devices, card number etc. Note down the card and device number for analog output.
No HDMI audio on Ubuntu | NVIDIA GeForce Forums
https://www.nvidia.com/en-us/geforce/forums/game-ready-drivers/13/234077/no-hdmi-audio-on-ubuntu/?topicPage=66
No sound available on the HDMI connection that also suddenly stopped working. I have been away from my docked home office environment for a few weeks now where it was working, but now that I am back, I noticed that the HDMI audio output no longer even appears as an option in the Sound Control Panel. I am on Ubuntu 20.04.
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