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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 …
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 …
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.
Default audio output to HDMI - Raspberry Pi Stack Exchange
https://raspberrypi.stackexchange.com/questions/118819/default-audio-output-to-hdmi
The config file you seek is in /boot/firmware/config.txt But hdmi mode 2 probably ins't your issue... That's about DVI mode, if you can manually turn the audio on, that's not the problem. pulseaudio has a config file at /etc/pulse/default.pa used by Ubuntu You can override it for the current user by copying it to ~/.config/pulse/default.pa
Ubuntu e dintorni: Abilitare l'audio tramite il cavo hdmi ...
https://wiredita.blogspot.com/2011/01/abilitare-laudio-tramite-il-cavo-hdmi.html
Abilitare l'audio tramite il cavo hdmi con scheda NVidia Geforce ... Peccato che, a causa di questo bug di Ubuntu, a meno di ricompilare il kernel inserendo una patch, nessun suono viene trasportato tramite il cavo hdmi. Vi propongo una soluzione a questo problema davvero molto semplice.
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