I just completed the installation of 4.3.0-kali1-amd64 without difficulty. However, upon rebooting the machine I find that any letter I type into the username or password fields is doubled, and I am not allowed to log in with the password I gave during setup. During setup there was no apparent keyboard problem, nor is there a problem if I boot single user to the command line. The mouse is also very uncooperative - slow and jumpy. I also notice that the keyboard echo is slow - and the second, repeated character comes about a tenth of a second later than the first.
What to do? Is it possible to prevent the system from coming up in GUI mode? I don't see how to change anything if I can't log in. sshd is not active yet.
Daniel Feenberg