I just suspended the system and after a while I tried to start the system from suspension. Then I see that my keyboard is not working to enter my password in order to log in. My keyboard is working in tty mode. I think that before suspension I had few updates. I updated system by “sudo pacman -Syy” and “sudo pacman -Su” in tty mode, but it didn’t lead to a point.
This issue has a solution now: https://forum.antergos.com/topic/5180/login-issue-with-lightdm-webkit-greeter-not-accepting-user-input
– Michael Tunnell