Black screen after update and reboot

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

enter tty: ctrl+alt+f2 - or f1-f6 keys and type: startx

Some basics:

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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

ok, I will try, do you know if I will always need to type this command?

no of course not, thats just to see if it works, or it gives you some errors, if errors post picture of them

ok, so first rerun update:
sudo pacman -Syu
if there are errors post them here

refresh mirrors + update:
sudo pacman-mirrors --fasttrack 5 && sudo pacman -Syyu

That’s covered in the linked guides.

It seems something is wrong with the servers you are reaching. Please try:
sudo pacman-mirrors --country Germany,France,Austria && sudo pacman -Syu

First lets make things work later optimize.

I will try in a few hours as I need to work now, as soon as possible I will try again and

There we go:

sudo rm -R /var/lib/pacman/sync

and then:

sudo -E pacman -Syu

Reference: [SOLVED] Error updating system (error: GPGME error: No data) / Newbie Corner / Arch Linux Forums

got a bunch of messages saying that some packages are newer than others

The mirrors you are using are outdated. Run
sudo pacman-mirrors -f 5 && sudo pacman -Syyuu

I ran the commands, still got the same result

Last try:
sudo pacman-mirrors --country Germany,France,Austria && sudo pacman -Syu