I installed the Antergos KDE on a new laptop!
The first boot was successful, X was loaded, but the system could not reboot/shutdown, the system crashed, on a black screen.
I solved this problem:
I created file /etc/modprobe.d/disable-nouveau.conf:
blacklist nouveau options nouveau modeset=0
Then I installed Bumblebee and nvidia on this guide, in the end I get a black screen!
My God, I did it twice the result is the same.
I did everything exactly according to the instructions
On an old laptop, Antergos xfce works fine!
Guys, please help me!