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I have this problem, after my laptop wakes up from suspend, my wifi connection is treated and shown as wired.
Internet still works but no wifi connection is detected just a wired one.
Running sudo systemctl enable wifi-resume.service seems to work, but only the after the first suspend.
If the laptop goes to sleep once more the only solution is a reboot. I am using the default ubuntu network manager.

lshw:

*-network
   description: Wireless interface
   product: Centrino Wireless-N 2230
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:06:00.0
   logical name: wlp6s0
   version: c4
   serial: 00:c2:c6:85:45:2b
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-47-generic firmware=18.168.6.1 ip=192.168.0.5 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
   resources: irq:35 memory:f7800000-f7801fff

menu with wifi not working

Thanks in advance.

LupusInFabula
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  • 4

1 Answers1

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Odd as it sounds, the solution that worked for me was disabling/purging ModemManager. I had very similar symptoms as you, but now my system resumes Wifi like a charm.

Paladine
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  • After doing this there where no immediate changes, but now after like a week it's working perfectly. I do not know if this was the solution or maybe an update fixed it but anyway thanks! – LupusInFabula Dec 30 '16 at 19:37