serious problem with wifi cannot connect anymore

Hi This problem is much more serious than my other one, since I only have for coming days wifi available, however one laptop does not connect anymore. I am on Kubuntu 14.04 and the connection does not work neigher with the plasma networkmananger nor with tdenetworkmanager. I deleted a link from /run/resolvconf/resolv.conf to /etc/resolv.conf Then the following file was created as /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.1.1 search telefonica.net Even as root I cannot anymore modify nor delete it, I wanted to set again the link mentioned above but without success. When I start tdenetworkmanager I obtain the following error (no idea whether this related to the above problem) any help is strongly appreciated since outwise I have to reinstall everything. Uwe Brauer