How to configure Remmina for VNC desktop sharing?

To use VNC, you must have a VNC server installed and running on the machine.

sudo aptitude install vnc4server 

Follow the instructions

You will require a password to access your desktops.

Password:
Verify:
Password too long - only the first 8 characters will be used
xauth:  creating new authority file /home/server/.Xauthority

New 'server:1 (root)' desktop is server:1

Creating default startup script /home/server/.vnc/xstartup
Starting applications specified in /home/server/.vnc/xstartup
Log file is /home/media/.vnc/media:1.log

Now you can connect to this machine using Remmina on the other machine.

Reference: Install VNC Server and VNC Client on Ubuntu

I had the same problem. It would connect to a remote server but the screen remained blank. Possibly the version installed with the distribution has a problem. I removed it and then installed the latest version from the Remmina website https://www.remmina.org/wp/. This version works OK for ssh for me.

For Ubuntu users we have an official PPA with Remmina 1.2

To install it, just copy and paste the following three lines on a terminal window

sudo apt-add-repository ppa:remmina-ppa-team/remmina-next
sudo apt-get update
sudo apt-get install remmina remmina-plugin-rdp remmina-plugin-gnome libfreerdp-plugins-standard  

ppa:remmina-ppa-team/remmina-next supports all currently supported versions of Ubuntu (14.04, 16.04, 17.04, 17.10, 18.04).

For which protocol you wish to configure it?

For VNC or RDP or other it is very simple.

If you are going for the ABC user remote control then give that name in Name tab

Then choose protocol.

then put IP address of remote machine in Server Tab. Then press connect

If you already know Username/Password then you can fill it in appropriate tabs.

But first you need to enable/install VNC/RDP on the related machine.

for that go to Desktop Sharing and enable it.