有时候启动图形界面时常常遇到“Xlib: connection to ":0.0" refused by server”的错误，如：

[root@AS-10 ~]# wireshark 

Xlib: connection to ":0.0" refused by server

Xlib: Invalid MIT-MAGIC-COOKIE-1 key

(wireshark:7852): Gtk-WARNING **: cannot open d[……]

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