I was having problems with corrupted keys and mirrors on my system, after solving the situation I restarted my notebook, I believe that some kernel version was updated by pacman, but when checking before restarting it seemed to me that it was the same thing.
Anyway, I restarted the machine and now the screen is black, I hope someone can help me to get things back to normal
It is difficult for lay people like me to provide this information with a black screen and only the cell phone for consultation, however, I will try to improve the questions