I persistently get this bug.
Installed Ubuntu 18.04 LTS on a Thinkpad p73.
However...
It doesn't do anything beyond that unless I do a hard-shutdown.
So what I tried is...
After hard-shutdown it boots into a login, but after typing my password and hitting Return/Enter it remains a purple background with mouse cursor that cannot be moved around.
Question
Has anybody had any luck, e.g. set an alternative bootup flag/option to make it work for them?
EDIT (sorry for delays):
Many thanks, to WinEunuuchs2Unix the firmware bug is now gone (after switching off TPM from BIOS as you kindly advised) however there is another bug that spawned which goes as such:
Couldn't get size: 0x800000000000000e
[ ***] (2 of 2) A start job is running for Wait until snapd is fully seeded (21s / no limit)
VFS: busy inodes on changed media or resized disk sda
[EDIT 2:]
Shout outs to Oldfred, since I am now trying to get my wifi card to work. And he is on to something +1.