This is a 4.1GB upgrade since the last upgrade which was in 10 december 2021. There are a few irrelevant packages that could not be upgraded. Now, after booting, Manjaro puts me in tty1 (and I checked all the ttys available through the F-keys) and on a login prompt I can log in using my username and…

I would not go by -R, but simply replace libgdm-plymouth with libgdm sudo pacman -Syyu libgdm gdm should replace both without breaking dependencies … just confirm the install when asked.