Hello Jenefa
You most likely used ‘sudo’ a few commands earlier. Remember that
usually ‘sudo’ doesn’t prompt for password again if you’ve already
entered it. Password prompts depend of your OS configuration.
Are you sure that you use appropriate package for your OS architecture?
Packages ‘amd64’ for 64 bits and packages ‘i386’ for 32 bits.
The right command to install NoMachine Free on Ubuntu x64 is:
sudo dpkg -i nomachine_5.0.53_1_amd64.deb
More about NoMachine’s installation you can find in:
https://www.nomachine.com/DT07M00078&dn=
Are you sure that nxserver isn’t running? Do you see NoMachine Monitor
in your system tray? It’s a white-grey icon with ‘!M’ near system’s
clock.
If you don’t see it, could you check OS processes by run this command
in terminal:
ps aux | grep nx
Basics of NoMachine you can find here:
https://www.nomachine.com/getting-started-with-nomachine