And the login keyring prompt is still there, despite changing settings over manually. I have no clue what's causing it.
You know what else would be cool? Maybe not for this LTS, but for the next one down the line, would be Canonical Livepatch integration. That would set Ubutnu MATE apart from Raspbian more. Less reboots.
I am not sure this issue is new to 18.04 but it is present. I set my Pi 3B+ to boot to text mode "sudo systemctl set-default multi-user.target" and it boots as expected. If I login and bring up the gui environment "sudo systemctl isolate graphical.target" it does this as expected. When I try to logon to the gui I receive these errors:
Could not connect to session bus: Failed to connect to socket /run/user/1000/bus: Connection refused
Could not acquire name on session bus
If I instead attempt to logon as a different user I do not see this issue. Something about MY account seems to be hung.
I have tried this on CentOS 7 on Intel and Ubuntu Mate 18.04 on Intel. No problem. I can logon to the command line, bring up the gui and log myself onto the gui.
nice work! i have removed firefox, chromium-browser does a better job. sound through my audioinjecor stereo hat works just fine!