nmcli can help with Ubuntu acting weird after wakeup (e.g. no network)
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After suspend
as can you see the state is asleep meaning our dear network manager is still napping, so to solve use the following command line:RUNNING STATE WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running asleep enabled enabled enabled disabled
sudo nmcli nm sleep false
Read more: Link - Wireless networking not working after resume in Ubuntu 14.04 - Ask Ubuntu