noMachine

# 能搜到，但链接不上，关防火墙
ufw allow 4000

# pm
New-NetFirewallRule -DisplayName "Allow Port 4000" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 4000

# 黑屏
sudo systemctl stop gdm3
# sudo systemctl start rc-local.service
sudo /etc/NX/nxserver --restart
# 永久，将上面两条命令写入/etc/rc.local中：
sudo vi /etc/rc.local