我已经pass配置pass_secret_service好，以便我的 Wifi 密码存储在该秘密服务（org.freedesktop.Secret.Service）中。因此，当我连接到 Wifi 网络时，网络管理员应该向特勤局询问密码。
但是，当我尝试使用 连接到网络时nmcli，它不起作用：
$ nmcli connection up Foobar
Passwords or encryption keys are required to access the wireless network 'Foobar'.
Warning: password for '802-11-wireless-security.psk' not given in 'passwd-file' and nmcli cannot ask without '--ask' option.
Error: Connection activation failed: Secrets were required, but not provided
但如果我nm-applet在后台运行，那么它会起作用：
$ nm-applet &
$ nmcli connection up Foobar
Passwords or encryption keys are required to access the wireless network 'Foobar'.
Warning: password for '802-11-wireless-security.psk' not given in 'passwd-file' and nmcli cannot ask without '--ask' option.
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/15)
nm-applet为什么不在后台运行就无法运行？任何想法如何解决这一问题？