cannot do sudo wireshark - Gtk-WARNING **: cannot open display:

[terapin]

Thanks. I got it to work since some days back. For the record it was most likely this solution that I used

http://ask.wireshark.org/questions/7...erfaces-listed
$ sudo apt-get install wireshark
$ sudo dpkg-reconfigure wireshark-common
$ sudo usermod -a -G wireshark $USER
$ sudo reboot