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I moved one of my desktop to Ubuntu to try it. In Centos 7, all I need to do to launch a VNC server and see my desktop remotely is: yum install tigervnc-server xorg-x11-fonts-Type1 and vncserver. And I can see correctly my desktop as if I was in front of the monitor. No need to modify any xstartup file or anything!

The question comes back again and again without acceptable answer then I have few more:

  1. Why nobody could do it in Ubuntu yet?
    • If Unity or for whatever reason it isn't possible, let me know.

  2. Why 99% of the tutorials required us to install xfce?!

    • I don't want to install anything else Finally, for an ultimate time:

  3. Is there a proper way to install a VNC server without modifying xstartup, and without installing a tier desktop?

I don't expect a simple answer here, if you provide a xstartup file, I'd like to get all the explanations. No need to get the same what I can read in the hundreds duplicated blogs.

None
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    x11vnc -create -env FD_PROG=/usr/bin/unity -env X11VNC_CREATE_GEOM={$1:-800x800x24} -nopw -localhost -forever -shared -noshm – eri0o Aug 11 '19 at 03:49
  • Why x11vnc? Latest version: 2011. Why is Xvfb mandatory here and not in Centos? – None Aug 11 '19 at 03:54
  • Moreover even after the x11vnc and xvfb installations, I get lots of XOpenDisplay errors and asking me to run x11vnc as root. No way. – None Aug 11 '19 at 03:59
  • The above line is exactly what I use on my phone. Why don't you ssh -x, no need for vnc. – eri0o Aug 11 '19 at 10:19
  • no need ssh in local 2. ssh X forwarding performance is awful 3. can forward only the app I launched 4. the app closes with the connection 5. using windows?! 6. it isn't my question 7. a lot more
    • – None Aug 11 '19 at 10:24
  • Oh, you are using Windows? Then you should be either using ssh -x with WSL (in Win7 I use Cygwin with XWin) or using Remote Desktop Protocol, also known as RDP. Take a look into this -> https://askubuntu.com/questions/592537/can-i-access-ubuntu-from-windows-remotely (you can ignore the part that says to install xfce, but you will need to replace the bin for whatever you are using. I tried with KDE and it worked.) – eri0o Aug 11 '19 at 14:16