I have a little problem when I turn on the laptop, when booting after the Samsung logo the screen is only black / blank and then after a few seconds it enters the desktop. not usually at the beginning of boot there is a logo from manjaro linux but why is my only just blank? I use manjaro cinnamon
You probably mean grub-quiet. Nothing unusual.
You can get rid of the quietness, just do a forum search.
can I ask please find it, I don’t really understand
See this one