1，報錯

$ firefox

(firefox:2673): GConf-WARNING **: Client failed to connect to the D-BUS daemon:

Failed to connect to socket /tmp/dbus-80Eq35bHIz: Connection refused

(firefox:2673): GConf-WARNING **: Client failed to connect to the D-BUS daemon:

Failed to connect to socket /tmp/dbus-Hc5ktVWgCD: Connection refused

(firefox:2673): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: Could not connect: Connection refused

(firefox:2673): GConf-WARNING **: Client failed to connect to the D-BUS daemon:

Failed to connect to socket /tmp/dbus-awpAoJ2BYb: Connection refused

原因：你沒有加sudo

2，報錯

$ sudo su

root@pc1:/home/user1# firefox

MoTTY X11 proxy: Authorisation not recognised

Failed to connect to Mir: Failed to connect to server socket: No such file or directory

Unable to init server: Broadway display type not supported: localhost:10.0

Error: cannot open display: localhost:10.0

原因：你不該登錄root用戶去打開

3，正確的打開姿勢：

$ sudo firefox

總結

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