After cleanly dual booting my new Dell Vostro 3568 with Windows 10 & Ubuntu 17.04, I am facing this issue. It happens in both the partitions.
I have referred following threads & others as well, but no luck:
- Can't connect to a specific WiFi network (Ubuntu 14.04)
- Ubuntu internet stops working after a few minutes. Wifi stays connected though
Have tried to reinstall all the Dell drivers from Windows partition, but the issue persists. Basically my PC easily connects to most of the wifi networks, but it faces problems with certain network, which is a leased line and connected to a Ruckus router [with/without firewall].
Here is the pastebin output, which is derived from this forum link. I am able to connect with "AAHLAAD_AirtelBB" (as seen in pastebin), but unable to connect with "AAHLAAD_Production". Reinstalling (without uninstalling) the network manager didn't help.
Kindly help!
Update (12-Jun-2017): Though I fixed the wifi connection issue (see my answer), the internet connection issue is still not fixed. I even tried the solution described in this answer as well, but no luck. The problem still persists, where the internet works fine for less than a minute and then it doesn't work at all. The wifi remains connected though.
Bounty (28-Aug-2017): Had posted this problem in Ubuntu forums as well, but no luck so far. Hence starting a bounty.
Ubuntu Wifi connected but no internet (internet remains for short time)