This seems to be the error on Lubuntu VM:
Apr 03 18:50:56 Lubuntu-KVM sddm: Could not start Display server on vt 1 Apr 03 18:50:56 Lubuntu-KVM sddm: Failed to read display number from pipe
Not sure what’s going on. I tried to boot a live disk, and update (as I can’t even use TTY). While that process worked, it didn’t resolve the issue.
This one’s on Ubuntu Unity VM:
And unlike Lubuntu, I can use TTY.
Edit 2: Neon Unstable VM seems to be working fine so far.