Comment 24 for bug 1666432

I had (fingers crossed that I fixed it) this same thing with my brand new Dell 3567 laptop that came with Ubuntu 16.04 LTS.

I noticed that the wifi (no wired connection in my home) behaved exactly like the initial report... but only when my mother turned on her tablet, other times it worked perfectly. However, once she connects her tablet, my laptop every 5-10 min seemed to "forget" it was connected. Most of the times the network manager showed the connected indicator but Chromium was telling me that there's no internet, occasionally the issue appeared as asking to re-sign in randomly.

After searching the internet, I found this rather cryptic sentence in a HP laptop support site: "There are some compatibility issues when using 802.11g and 802.11n devices on the same WLAN". Mother's tablet is b/g, my laptop b/g/n - the router was set to b/g/n mixed mode, with provider restriction to 2.4GHz channels only. On a hunch I changed the router setting to b/g mixed (I couldn't find how to temporary disable the 802.11n protocol in my laptop to check) and it's now been 3 days without any interruption, so I assume at least in my case the bug had something to do with that.

Since it seems that I can fix the issue via router settings, I assume I can reenable the issue if data is needed.