Jetson Nano - Fonts too small on the screen

Hello, I have a 2GB jetson nano. I downloaded the image and put it on an SD. I ran the set without a password on departure. I did the automatic update and everything went fine. The only thing that makes it impossible for me to work is that the writing is too small and I can’t read anything on the screen.
So I redid everything with password on departure. The writings are much larger and I can work, but as soon as I do the automatic update the system no longer starts and remains with the black screen.
I have repeated the above several times, but always with the same result.
What can I do?

Jetson nano-2gb and get blank screen after apt-get update/upgrade.

Then you might want to check this post.