Hello I have an asus tuf505dv with:
xubuntu LTS 20.04
kernel 5.4.0-51-generic x86_64
nvidia 450 driver.
my second screen in HDMI starts up but remains black.
I tried another screen that didn’t change anything and I tested the screen on my old laptop and it works fine.
I install and uninstall all the drivers, reinstall Xubuntu several times try ubuntu and tested the 18.
I saw on several forums that there were several of us in this case; not to find a solution.
I reinstalled nvidia prime with:
sudo apt install --reinstall nvidia-prime
Could you please help me find a solution?