An unknown problem with NetworkManager-KDE, aka knetworkmanager, will sometimes
disable wireless even when ‘rfkill list’ shows no block. My “fix” for this is to
create a small script to stop and re-start knetworkmanager. To date, this has
worked every time.
The script has the following content:
#!/bin/sh # # Restart knetworkmanager to re-enable wireless # killproc knetworkmanager knetworkmanager > /dev/null 2>&1 &
Put the above information in a file named ~/restart_knetworkmanager, then issue
chmod a+x ~/restart_knetmanager
That makes it executable, When you get “Enable wireless” grayed out and it is
not caused by any rfkill switch, then enter the command ‘~/restart_knetworkmanager’.