After recently installing Linux Mint 18 on my Samsung Series 5 550 Chromebook, I noticed that after a system standby/resume, my wireless network list was not refreshing or connecting to networks if in a new location (for example, suspending the system at home, then resuming when at work it would not find new networks).
The following fix was found to work fine for me, credit goes to Ubuntu Forums here.
Apparently this is common for Broadcom wireless cards, mine however was a Atheros 93xx card:
rob@chromebook ~ $ lspci | grep -i wireless
01:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01)
The fix was to create a new file:
sudo nano /etc/pm/sleep.d/10_restart-networkmanager
Paste the following into it:
case "$1" in
service network-manager restart
# Do nothing
Make sure root is the owner of the file:
sudo chown root /etc/pm/sleep.d/10_restart-networkmanager
And make the file executable:
sudo chmod +x /etc/pm/sleep.d/10_restart-networkmanager
Once done, reboot the laptop and you should then be able to suspend and resume the system without problems, upon resume, it will restart network-manager to work around the issue.