Resolvendo o erro no acesso VNC no Ubuntu Desktop 16.04 - Server did not offer supported security type

Ao tentar acessar o Ubuntu Desktop através do VNC, você recebe a mensagem de erro:

Server did not offer supported security type

 

Instale o pacote abaixo:

sudo apt install dconf-editor

root@lxpc:~# apt-get install dconf-editor

Reading package lists... Done

Building dependency tree       

Reading state information... Done

The following NEW packages will be installed:

  dconf-editor

0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.

Need to get 147 kB of archives.

After this operation, 676 kB of additional disk space will be used.

Get:1 http://br.archive.ubuntu.com/ubuntu xenial/universe i386 dconf-editor i386 3.18.2-1 [147 kB]

Fetched 147 kB in 0s (1.055 kB/s)    

Selecting previously unselected package dconf-editor.

(Reading database ... 205392 files and directories currently installed.)

Preparing to unpack .../dconf-editor_3.18.2-1_i386.deb ...

Unpacking dconf-editor (3.18.2-1) ...

Processing triggers for hicolor-icon-theme (0.15-0ubuntu1.1) ...

Processing triggers for man-db (2.7.5-1) ...

Processing triggers for libglib2.0-0:i386 (2.48.2-0ubuntu4.6) ...

Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...

Processing triggers for desktop-file-utils (0.22-1ubuntu5.2) ...

Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20180209-0ubuntu1) ...

Rebuilding /usr/share/applications/bamf-2.index...

Processing triggers for mime-support (3.59ubuntu1) ...

Setting up dconf-editor (3.18.2-1) ...

root@lxpc:~# 

Abra o dconf-editor e navegue até: org --> gnome --> desktop --> remote-access

Desabilite a opção "require-encryption"

Pronto, problema resolvido

URL de Referência:

https://www.bonusbits.com/wiki/KB:Fix_VNC_Desktop_Sharing_on_Ubuntu_Desktop