on a Raspberry Pi, if you have it all set up and working, typing midori & at a ssh command prompt will start the midori browser, the midori “back end” runs on the raspberry pi, but the window appears on your windows/mac, just as if it was a normal window on that machine. via ssh), run a command, and a graphical window pops up on your windows/mac desktop. It’s not without it’s problems, but here are some of the neat things you can do with a X11 server. This is inherently much more efficient, and more flexible. X11/windows however, runs a X11 display server on the computer you are sitting at, and the programs running on the remote machine just send display update commands in to that server. VNC uses compression, so this performs better than you might think, but still it’s quite an inefficient protocol if you have a poor connection to the remote machine. This truly is a live remote connection at the lowest level. One of the main differences between VNC and x11 is that VNC sends all mouse movements to the remote machine, and all screen updates come back as compressed bitmap data.
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