更新到15.10后，将无法从终端运行图形应用程序：
xxx@xxx:~$ gksudo wireshark
Invalid MIT-MAGIC-COOKIE-1 key
(gksudo:5532): Gtk-WARNING **: cannot open display: :0
xxx@xxx:~$ sudo -H wireshark
[sudo] password for xxx:
Invalid MIT-MAGIC-COOKIE-1 key
** (wireshark:5535): WARNING **: Could not open X display
Invalid MIT-MAGIC-COOKIE-1 keyFailed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(wireshark:5535): Gtk-WARNING **: cannot open display: :0
xxx@xxx:~$ wireshark
Invalid MIT-MAGIC-COOKIE-1 key
** (wireshark:5569): WARNING **: Could not open X display
Invalid MIT-MAGIC-COOKIE-1 keyFailed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(wireshark:5569): Gtk-WARNING **: cannot open display: :0
xxx@xxx:~$ gedit
Invalid MIT-MAGIC-COOKIE-1 key
** (gedit:5570): WARNING **: Could not open X display
Invalid MIT-MAGIC-COOKIE-1 keyFailed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(gedit:5570): Gtk-WARNING **: cannot open display: :0
xxx@xxx:~$ sudo gedit
Invalid MIT-MAGIC-COOKIE-1 key
** (gedit:5574): WARNING **: Could not open X display
Invalid MIT-MAGIC-COOKIE-1 keyFailed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(gedit:5574): Gtk-WARNING **: cannot open display: :0
我的小研究指向gksudo使用，但它也不起作用。我还尝试了xauth的一些东西。问题是什么？谢谢。
奇怪，但export DISPLAY=:1有所帮助。干杯。
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我来说两句