A year ago I talked about a software that allowed you to share keyboard and mouse with multiple computers. I tried using it but it did not work. Today I have made a video tutorial to see how it works and how comfortable it is...
I have been tested with Ubuntu, but it works on Mac or Windows.
As you can see, the steps are simple:
Install the program on server (computer with keyboard and mouse) and client.
Configure the server with the GUI.
Run on the Pi: synergyc --daemon ip_server
I've noticed it only works with the desktop environment, so you have to type in the console: startx
For the lazy, I created for PiKISS a script that install, enable you to choose the server and run it on startup.
NOTE: The author now charge for the program but is still free. The nighty builds are available for all platforms. I'll leave the link below, although I installed it on Ubuntu and Raspberry Pi from the repository: