https://blog.csdn.net/yanchenyu365/article/details/133038162

https://www.xnadevelop.com/linux/vnc-remotedesktop-ubuntu-22-04-blackscreen/

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root@xd-OptiPlex-3070:~/npc_huoshan# cat /etc/gdm3/custom.conf
# GDM configuration storage
#
# See /usr/share/gdm/gdm.schemas for a list of available options.

[daemon]
# Uncomment the line below to force the login screen to use Xorg
WaylandEnable=false

DefaultSession=xfce4.desktop
# Enabling automatic login
#  AutomaticLoginEnable = true
#  AutomaticLogin = user1

# Enabling timed login
#  TimedLoginEnable = true
#  TimedLogin = user1
#  TimedLoginDelay = 10

[security]

[xdmcp]

[chooser]

[debug]
# Uncomment the line below to turn on debugging
# More verbose logs
# Additionally lets the X server dump core if it crashes
#Enable=true

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sudo apt-get update
sudo apt-get install xfce4 xfce4-goodies

sudo apt update
sudo apt install xfce4 xfce4-goodies xfconf

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sudo systemctl restart gdm3

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(base) xd@xd-OptiPlex-3070:~$ cat ~/.vnc/xstartup
#!/bin/sh
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
exec startxfce4

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chmod +x ~/.vnc/xstartup

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vncserver :1 -geometry 1920x1080 -depth 24 -localhost no

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vncserver -list

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vncserver -kill :*  # 关闭所有 VNC 会话