Version: (using KDE 4.4.2) OS: Linux Installed from: openSUSE RPMs 1. sudo killall NetworkManager -> knetworkmanager icon would turn into generic icon with "network managemanent disabled" message 2. sudo /usr/sbin/NetworkManager -> nothing changes with knetwokrmanager tray icon and "network management disabled" popup message is still there, though system notification area shows message "wlan0 connected" and inet connection returns 3. killall knetworkmanager; knetworkmanager -> knetworkmanager icon in the tray shows active connection as it should.
I can confirm this bug on Ubuntu 10.04 as well as Debian testing(squeeze). If you suspend and resume a laptop a KDE destop will disconnect from the network without a gui ability to enable networking again.
This appears to be a duplicate of Bug 233469.
*** This bug has been marked as a duplicate of bug 233469 ***