Do not run wireshark as user "root"!
Read some documentations about wireshark. Your problem isn't a Knoppix problem.
When I launch wireshark(from k-menu..run, or from the command line) it loads but doesn't list interfaces unless I do sudo wireshark or I suppose if I do su then wireshark. That's fine.
But sudo wireshark or su<ENTER>wireshark<ENTER> isn't working.
It worked yesterday but now when I try, I get this error
knoppix@Microknoppix:~$ su root
root@Microknoppix:/home/knoppix# wireshark
No protocol specified
(wireshark:4986): Gtk-WARNING **: cannot open display: :0
root@Microknoppix:/home/knoppix# su knoppix
knoppix@Microknoppix:~$ sudo wireshark
No protocol specified
(wireshark:503: Gtk-WARNING **: cannot open display: :0
knoppix@Microknoppix:~$
Do not run wireshark as user "root"!
Read some documentations about wireshark. Your problem isn't a Knoppix problem.
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
Cisco SG110 8 Port Gigabit Ethernet Switch SG110D-08-UK
$39.00
Cisco SG110 24 Port Gigabit Ethernet Switch w/ 2 x SFP SG110-24
$117.00
HP Procurve 2824 24 Gigabit Ports 10/100/1000 External Managed Switch J4903A
$74.99
Cisco SG110-16HP 16-Port Gigabit PoE Unmanaged Switch SG110-16HP-NA
$108.00
New Linksys SE3005 5-port Gigabit Ethernet Switch
$18.99
Linksys SE3008 8 Ports Rack Mountable Gigabit Ethernet Switch
$21.99
Netgear Prosafe GS724T V2 24-Port 10/100/1000 Gigabit Ethernet Network Switch
$27.99
NetGear ProSafe GS748T V4 48-Port Gigabit Smart Switch w/ Ears + Cord
$30.00
Netgear ProSafe S3300-52X-POE+ 48-Port Gigabit PoE+ Stackable Network Switch
$99.99
Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED
$99.97