When installing Ubuntu, and during install You choose to use wlan0 interface.
On first system boot wireless becomes unmanaged, and You can’t choose wireless AP.
solution is to edit file /etc/network/interfaces
There should be lines like
auto wlan0
iface wlan0 inet dhcp
wpa-ssid wifi-name
wpa-psk wifi-key
delete those lines and reboot computer. Network manager will be able to control wifi.
It is superb! It works on my laptop wifi which had been become “unmanaged” since I have turned it as a hotspot access point and I forgot how did I do that. Thanks alot!!!!
This one really worked!! Thanks from a Linux n00b.
Unbelievable. This is great. Is this a bug? Maybe someone should tell them so this could be fixed. I can’t see a situation where this would benefit someone, except maybe as a security feature.