当我尝试从应用程序管理器启动 Synaptic 时，它要求我输入密码，我输入了密码（我再三检查）然后软件关闭。
当我尝试用它启动时，sudo它不起作用，每次我尝试用su终端登录时，Authentication failure我都会得到正确的密码。怎么了？
输出sudo -H synaptic
No protocol specified
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(synaptic:32380): Gtk-WARNING **: cannot open display: :0