same/similar issue here: ignored message and updated system → stuck at boot “stopping bootsplash after system start up” or something like this. linux62 was installed | bootsplash-systemd | bootsplash-theme-manjaro was installed.
Solved issue:
removed bootsplash* | updated /etc/default/grub | update /etc/mkinitcpio.conf (reverse of: [HowTo] Enable Bootsplash Provided by the kernel)
removed linux62 | removed linux62-nvidia
reboot | installed linux61-nvidia
system up and running again with GUI 