After I installed Knoppix 5.1.1 in a partition of my HD, the SU-mode seems not to be able to work.

I tried to activate the network-card, or tried to start the super-user-file-manager, and an error came w.r.t. starting the SU-mode.

Please give me a hint to solve the problem (be aware that I am not able to access the internet through my new installed Knoppix 5.1.1).


Best Regards
Joepi