I think I may have the same problem as this, symptoms are similar.
I performed and aptitude full-upgrade earlier this week. This installed a new kernel 4.4.0-71 amongst other package updates. After a reboot NetworkManager applet was stating 'Device not ready' for the wifi device. I went back to an earlier kernel, but the symptoms are the same.
My wifi device is Intel Centrino Advanced-N 6205 [Taylor Peak]
To work around the problem I disable wifi, restart NetworkManager and enable wifi. The wifi then connects. The following three commands get the system working fine.
nmcli radio wifi off
systemctl restart NetworkManager
sleep 5
nmcli radio wifi on
I think I may have the same problem as this, symptoms are similar.
I performed and aptitude full-upgrade earlier this week. This installed a new kernel 4.4.0-71 amongst other package updates. After a reboot NetworkManager applet was stating 'Device not ready' for the wifi device. I went back to an earlier kernel, but the symptoms are the same.
My wifi device is Intel Centrino Advanced-N 6205 [Taylor Peak]
To work around the problem I disable wifi, restart NetworkManager and enable wifi. The wifi then connects. The following three commands get the system working fine.
nmcli radio wifi off
systemctl restart NetworkManager
sleep 5
nmcli radio wifi on