Working from sk0rp10s tips above I have found the following: First of all: Problem description, as it is a little different. At some point I did something stupid, probably turning off the transmitter (easily done on a Dell D600 by hitting Fn-F2 instead of Alt-F2 :-( ). This got knetworkmanager confused and me in a state of panic. I reconfigured the wireless settings through systemsettings, and poof! the wireless network device was gone from knetworkmanager. The system as such worked, but I was now unable to switch networks easily when going from one location to another, and knetworkmanager gave the familiar "no active device found" message.
My solution: Not only do you need to set wlan0 back to auto, but you also need to give it _empty_ authentication details, like so: auto wifi0 iface wifi0 inet dhcp wireless-essid wireless-key This makes the available network list magically reappear and I am yet again able to switch WLANs via knetworkmanager. Peace of mind finally restored; this has been bugging me for a while :-) -- knetworkmanager fails to find network devices https://bugs.launchpad.net/bugs/77557 You received this bug notification because you are a member of Kubuntu Team, which is a bug contact for knetworkmanager in ubuntu. -- kubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
