Thinkpad t60p Ubuntu 16.04 LTS 32-bit Possible reason: Ubuntu was upgraded to 16.04 on another machine (that died), the HDD was moved over to the t60p
I've tried sudo service network-manager restart And sudo systemctl retart network-manager.service
Also testet to flip physical switch in combination with the above.
I also did sudo apt-get remove wicd
All steps suggested in another thread.