ubuntu 16.04 搭建tigervnc

主要参考 https://vitux.com/ubuntu-vnc-server/

apt install xfce4 xfce4-goodies -y
apt install -y tightvncserver
su - xxx
vncserver
vncserver -kill :1
cd /etc/systemd/system
vim vncserver@.service

文件内容是：

[Unit]
 Description=Remote desktop service (VNC)
 After=syslog.target network.target

[Service]
  Type=forking
  User=xxx
  PIDFile=/home/xxx/.vnc/%H:%i.pid
  ExecStartPre=-/usr/bin/vncserver -kill :%i > /dev/null 2>&1
  ExecStart=/usr/bin/vncserver -depth 24 -geometry 1280x800 :%i
  ExecStop=/usr/bin/vncserver -kill :%i

[Install]
  WantedBy=multi-user.target

改完以后，

sudo systemctl daemon-reload

sudo systemctl start vncserver@1.service
sudo systemctl enable vncserver@1.service

sudo systemctl status vncserver@1.service

域账户启动vncserver失败，转而求助于另一篇文章 https://websiteforstudents.com/install-and-configure-vnc-server-on-ubuntu-16-04-18-04/

vncserver@.service 这部分有差异：

[Service]
Type=simple
User=richard
PAMName=login
PIDFile=/home/%u/.vnc/%H%i.pid

但是域账户还是失败。于是改为非域账户。成功。

因为桌面是xfce4的，运行opencv提示出错，

于是安装gnome桌面，

apt-get install ubuntu-desktop gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal

这样比较重型了，可以这样。

apt-get install --no-install-recommends ubuntu-desktop gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal -y

改成gnome桌面，.vnc/xstartup这样配置：

#!/bin/sh

xrdb $HOME/.Xresources
xsetroot -solid grey
export XKL_XMODMAP_DISABLE=
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS

vncconfig -iconic &
gnome-session --session=gnome-classic &
[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
x-terminal-emulator -geometry 80x24++ -ls -title "$VNCDESKTOP Desktop" &
gnome-panel &
gnome-settings-daemon &

这样还是没有解决问题。 于是又参考 https://stackoverflow.com/questions/37989517/gdkglext-warning-window-system-doesnt-support-opengl

#! /bin/bash

# Make sure only root can run our script
if [[ $EUID -ne  ]]; then
   echo "This script must be run as root" >&
   exit
fi
dpkg --purge tightvncserver
dpkg -i xbitmaps_1.1.1-2_all.deb
dpkg -i x11-apps_7.+4_armhf.deb
dpkg -i x11-session-utils_7.+1_armhf.deb
dpkg -i xbase-clients_1%3a7.+7_all.deb
dpkg -i vnc4server_4.1.1+X4.3.0-.6_armhf.deb
# Restart vnc running script in background
systemctl restart vncboot.service

dpkg --purge tightvncserver，可能是这个起到作用了。最终解决了。