Why won't graphics load in ubuntu 16.04?

Question

linux

I can't understand why after installation according to the manual, 361 firewood does not start gdm. The screen flickers intermittently. There is no way to switch to text consoles. Drivers are suitable for this discrete graphics card .. This hybrid graphics is just a stumbling block. I've been fighting with it for a month now and I just can't get it to work.
Help me to understand

Answer 1

What other manual? There, go to the settings, put the bird and reboot.
Once the manual - then say what.
I'm sitting on 364 now, the hybrid graphics work fine. As on 361 and older, it worked from early alpha versions.

Answer 2

Put others.
Also the last (I don’t remember the number) didn’t want to get up