I have a Dell Mini 9 running Ubuntu 14. The wifi seems to work well, but only as long as I use it. I've noticed that if I leave it idle, and then try to ping or SSH into it, it's disconnected from the network.
When I manually log in to it,
nmcli nm reports its disconnected and won't reconnect. If I reboot the
network-manager service, it immediately reconnects.
Is this normal behavior? If so, how do I fix it?
I was thinking of making a cronjob that periodically checks the connection and restarts NM if it's down, but that seems a little hacky.