Comment 64 for bug 1585863

Also further to #60, I have put the following in mine (Thinkpad X1 Carbon 3) and it does indeed seem to fix the problem so far - been testing over a few days:

/lib/systemd/system-sleep/wpasupplicant:

        post) (sleep 3 ; /sbin/wpa_cli resume) & ;;

16.04.1 fresh install, kernel 4.4.0-59; network-manager 1.2.2-0ubuntu0.16.04.3

Anything shorter than 3 seconds seems to be too fast for that race condition; could this suggest this might be better fixed with a systemd dependency?