I tried what it says in the link you gave, although there was no vt.handoff option (in vivid image). I didn't get to initram shell. A lot of blurb went by quickly and stuck at one point, which was:
Starting Wait for Plymouth Boot Screen to quit...
Before that all (that I could see) messages said OK except one:
Failed to start Commit a transient machine-id on disk.
Yes, UEFI is turned off since the beginning.
I tried what it says in the link you gave, although there was no vt.handoff option (in vivid image). I didn't get to initram shell. A lot of blurb went by quickly and stuck at one point, which was:
Starting Wait for Plymouth Boot Screen to quit...
Before that all (that I could see) messages said OK except one:
Failed to start Commit a transient machine-id on disk.
HTH, will update if there is anything else.