There are no interfaces on which a capture can be done
解决方法:
Open a terminal by pressing Ctrl+Alt+T
press the right arrow and enter for yes
you should now be able to run it without root and you will be able to capture.
然后 重启wireshark
参考:http://askubuntu.com/questions/348712/there-are-no-interfaces-on-which-a-capture-can-be-done