I have one bootable USB drive running Ubuntu 22.04 LTS desktop, and another running Ubuntu 22.04 LTS server. The former came with GDM3 by default. I installed GDM3 on the latter via sudo apt install gnome-session gdm3. The mission, in the latter, is to set up a minimal yet functional Ubuntu desktop installation.
The results are very different. While the desktop version is great, the server desktop seems buggy. For example, it appears to offer no way to open a Terminal session. When I click on the icon for its Byobu Terminal, I get "Failed to launch Byobu Terminal. Unable to find terminal required for application."
The explanation there seems to be that gnome-terminal is not installed. I would be happy to install it - but, as I say, I can't find a terminal to do so.
Another bug: when I let the machine sit idle for a while, it reverts to its lock screen - which my password is unable to penetrate. The screen appears to be flashing, very briefly, the words "Authentication error" when I try.
If the problem is just that I neglected to add some crucial ingredient to my setup command - something more than just gnome-terminal, it seems - then maybe all I need is to find a way back to the server command line and add it. But if there is some larger problem with GDM3 on server, maybe I should be looking at some other display manager.
