During boot, my system is stuck for some reason. I can get to the command line by clicking Ctrl+Alt+F3. After login, what can I do to start the official GUI of Ubuntu 20.04? I tried the following:
gnome-session
gdm3
systemctl isolate graphical
but none of these worked.
I also tried:
lightdm
and I did see a graphical login screen, but not the usual one; and I could not log in from that screen (I got "authentication error").
I am looking for the most standard and officially-supported solution – I don't need any fancy GUI managers – I just want to get back to work…
Best Answer
lightdm
is not the standard Gnome window manager, it isgdm3
, so there is some misconfiguration. Easiest way to try to remedy it is to, when logged in, run:and reboot.