Why are the pixels broken after I want to unlock the screen?

ha
3

See image.

It is the ubuntu 19.04 version and since then, this bug appears with me when I close my laptop and then open again.

Why are the pixels broken after I want to unlock the screen
Gr

Maybe broken graphics driver? Try to start a live disk from a USB stick and see if that works or not

Al

It is the ubuntu 19.04 version

Again, the distribution is not crucial, but the graphics module, the desktop, the login screen and possibly even the window manager.

The first thing you should do with such an error is to look at the logfile!
Or you can run the command sudo journalctl -f alongside to see directly what is output.

Linux Hase

ch

This is pretty much the graphics driver.

What kind of GPU do you use? What graphics driver (including version)?