Ubuntu on Rapberry Pi won't display on large screen TV

[MAFoElffen]

How I installed 20.04 on my Raspberry Pi4... I download the Ubuntu Server 20.04 LTS image. I installed package 'ubuntu-desktop'. The I installed gnome-sessions. Then for sound tweaks, I installed Dmitry Kann's PPA at https://launchpad.net/~yktooo/+archive/ubuntu/ppa to install package 'indicator-sound-switcher', which is a sound fix package from MATE. the my user.cfg file.

I use the same recipe for my testing of 22.04, which I started out as 20.04 from above, then converted / release upgraded to... for testing and verifying the DEV/TEST.