This might be related to the fact that some HDMI ports are only connected to the Nvidia GPU and others only connected to Intel. That's normal, but might not be the only factor here.
To help us diagnose it further please run this command to collect more system info: apport-collect 1854877 ** Tags added: eoan multimonitor ** Package changed: xorg (Ubuntu) => gnome-shell (Ubuntu) ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1854877 Title: External HDMI display not working with Intel GPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1854877/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp