1. 依次打开设置 -> 共享 -> 屏幕共享

按如下进行配置

2. 可能会遇到如下问题

与IP地址的连接失败：远程计算机上的软件似乎与此版本的屏幕共享不兼容。
解决方法:
在 Bash 中执行如下命令

gsettings set org.gnome.Vino require-encryption false

切勿使用 ROOT. 除非你是以 root 权限开启的屏幕共享, 否则会遇到如下错误

jansora@jansora-Vostro-3669:~$ gsettings set org.gnome.Vino require-encryption false

(process:3600246): dconf-CRITICAL **: 10:50:13.891: unable to create directory '/run/user/0/dconf': 权限不够.  dconf will not work properly.

(process:3600246): dconf-CRITICAL **: 10:50:13.891: unable to create directory '/run/user/0/dconf': 权限不够.  dconf will not work properly.

(process:3600246): dconf-CRITICAL **: 10:50:13.891: unable to create directory '/run/user/0/dconf': 权限不够.  dconf will not work properly.

(process:3600246): dconf-WARNING **: 10:50:13.891: failed to commit changes to dconf: 无法连接： 权限不够

3. mac 通过 vns 连接 ubuntu

3.1 获取ubuntu 内网 ip

root@jansora-Vostro-3669:~# ifconfig | grep inet | grep -v inet6
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet 10.45.18.94  netmask 255.255.254.0  broadcast 10.45.19.255
        inet 127.0.0.1  netmask 255.0.0.0

3.2 连接

输入 vnc://{ip} vnc://10.45.18.94

输入密码: