Eu tenho o mesmo problema com o knetworkmanager. Tentei reinstalar, mas não tive sucesso.
Aqui está a saída da execução do knetworkmanager de cli:
$ knetworkmanager
knotify(15737) KNotify::event: 3 ref= 0
knetworkmanager(17694)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
knetworkmanager(17694)/kdecore (KLibrary) kde4Factory: The library "/usr/lib/kde4/solid_networkmanager07.so" does not offer a qt_plugin_instance function.
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
QSystemTrayIcon::setVisible: No Icon set
Executando ps -ef | grep '[N]et'
:
~$ ps -ef | grep '[N]et'
root 1012 1 0 18:33 ? 00:00:00 NetworkManager
No final, eu instalei wicd
e isso está trazendo a rede sem fio:
~$ sudo apt-get install wicd wicd-cli wicd-curses wicd-daemon wicd-gtk
E funciona perfeitamente!