补充设置。

Signed-off-by: rick.chan <cy@haoan119.com>

Software/Development/Environment/Qt/Embedded/Qt_Embedded_说明.md

@@ -138,9 +138,11 @@ chkconfig --list | grep mydemo
 [Unit]
 Description=MyDemo
 # After=syslog.target
-After=network.target
-After=multi-user.target
+# After=network.target
+# After=multi-user.target
 # After=graphical.target
+After=plymouth-quit-wait.service
+# After=systemd-logind.service
 
 [Service]
 RestartSec=2s
@@ -155,13 +157,19 @@ Restart=always
 WantedBy=multi-user.target
 ```
 
-也可以视情况将 After=multi-user.target 修改为 After=graphical.target。
+也可以使用 After=graphical.target。
 
 然后使用 systemctl 命令控制服务：
 
 ```bash
-systemctl enable mydemo
-systemctl start mydemo
-systemctl stop mydemo
-systemctl disable mydemo
+sudo systemctl enable mydemo
+sudo systemctl start mydemo
+sudo systemctl stop mydemo
+sudo systemctl disable mydemo
+```
+
+如果 Screen 的虚拟终端遮蔽了 QPA 应用程序，则可以将其关闭：
+
+```bash
+sudo systemctl mask getty@tty1.service
 ```