Linux NoMachine/VNC session doesn’t accept Keyboard and Mouse input

Linux NoMachine/VNC session doesn’t accept Keyboard and Mouse input

Sometimes it happens if your Linux sessions "X windows manager" goes wrong by accidently key combination or modification of ~/.kde or ~/. gnome profile configuration.

We can reset/replace of all input for a problematic session by below command;

# metacity --replace &

What you need to do?

1. Login to machine by ssh/rsh or Telnet by same user id. 
2. Set the DISPLAY environment of problematic session      

                # setenv DISPLAY <session id> 

     3. Run command "metacity --replace &".

Example:

For csh shell:

user@localhost:~> setenv DISPLAY localhost:1

user@localhost:~> metacity --replace &

For bash shell:

user@localhost:~> export DISPLAY=localhost:1

user@localhost:~> metacity --replace &

Now Keyboard and Mouse should work in that session.