Synergy - KVM Switch without Video

Synergy — ”lets you easily share a single mouse and keyboard between multiple computers with different operating systems, each with its own display, without special hardware. It’s intended for users with multiple computers on their desk since each system uses its own monitor(s).

Here are the minimum steps to run it :

1. Download the software from the synergy website.

2. Choose the server (the one with keyboard and mouse) to full control other clients.

3. Install the software

4. Create a configuration file (namely, synergy.conf) at the server.  The configuration file may look like this:  (where gene-laptop is the primary screen or server with keyboard and mouse, and i43.gl818.net is the secondary screen, its keyboard and mouse will be controlled by gene-laptop).

/*  Start of the Configuration File */
section: screens
   gene-laptop:
   i43.gl818.net:
end
section: links
   gene-laptop:
     left = i43.gl818.net
   i43.gl818.net:
     right = gene-laptop
end
/* End of the Configuration File */

5. Start the server as follows:

synergys -f --config synergy.conf

6. Start the client as follows:

synergyc -f 192.168.1.201

Note: 192.168.1.201 is the server IP address without DNS.

Ref:

http://synergy2.sourceforge.net/