amazon ec2 - I can't access the desktop of ec2 G2 instance -

i try using nx remotely connect aws ec2 instance in cloud. os ubuntu 14.04. following tutorial enter link description here, can access login page of ubuntu.

i use new created username , password login. stuck because everytime type usename , password , press 'enter', nothing happened except throw login page again.

i ensure usename , password correct. have no idea now. suggestion?

the guide following works nx 3. nx 4 uses different protocol (nx native protocol) uses different ports ssh.

by default nx 4 protocol uses port 4000. make sure open ports on ec2 security group.

ps: don't think nx 4 going work expect since won't able create virtual desktop. try following guide , use nx 3.