在尝试启动VNC服务器时遇到错误，错误信息显示启动应用程序指定在/etc/X11/Xvnc-session中失败。尝试运行tigervncserver-xstartup/usr/bin/xterm命令，但提示文件未找到。安装xterm后问题依旧，错误变为X服务器连接中断。最终通过查看日志文件并运行xtigervncviewer连接成功。
安装vncserver启动时出现如下报错：
Starting applications specified in /etc/X11/Xvnc-session
Log file is /root/.vnc/XXXX:1.log
Use xtigervncviewer -SecurityTypes VncAuth -passwd /root/.vnc/passwd :1 to connect to the VNC server.
vncserver: Failed command '/etc/X11/Xvnc-session': 256!
=================== tail -15 /root/.vnc/XXXX:1.log ===================
Copyright (C) 1999-2019 TigerVNC Team and many others (see README.rst)
See https://www.tigervnc.org for information on TigerVNC.
Underlying X server release 12008000, The X.Org Foundation
Thu Jun 30 09:08:25 2022
vncext: VNC extension running!
vncext: Listening for VNC connections on local interface(s), port 5901
vncext: created VNC server for screen 0
X connection to :1 broken (explicit kill or server shutdown).
Thu Jun 30 09:08:26 2022
ComparingUpdateTracker: 0 pixels in / 0 pixels out
ComparingUpdateTracker: (1:-nan ratio)
Killing Xtigervnc process ID 2451... which seems to be deadlocked. Using SIGKILL!
==========================================================================================
Starting applications specified in /etc/X11/Xvnc-session has failed.
Maybe try something simple first, e.g.,
tigervncserver -xstartup /usr/bin/xterm
然后根据提示运行了如下命令：
tigervncserver -xstartup /usr/bin/xterm
又会有如下报错：tigervncserver: Can't start '/usr/bin/xterm': No such file or directory!
然后安装xterm
sudo apt install xterm
再运行tigervncserver -xstartup /usr/bin/xterm还是会报错，但是这次错又不一样：
X connection to :2 broken (explicit kill or server shutdown).
Thu Jun 30 09:19:55 2022
ComparingUpdateTracker: 0 pixels in / 0 pixels out
ComparingUpdateTracker: (1:-nan ratio)
Killing Xtigervnc process ID 5929... which seems to be deadlocked. Using SIGKILL!
正百思不得其解时，看到了报错信息中其实有如下提示：
Starting applications specified in /etc/X11/Xvnc-session
Log file is /root/.vnc/XXXX:2.log
Use xtigervncviewer -SecurityTypes VncAuth -passwd /root/.vnc/passwd :2 to connect to the VNC server.
运行：
xtigervncviewer -SecurityTypes VncAuth -passwd /root/.vnc/passwd :2
连接成功
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