I have a fresh install of Ubuntu GNOME 17.04. I was not able to connect to the Internet while using a live USB, but decided to install anyway and try to fix the problem later. Unfortunately, I was not able to solve it.
I can WiFi networks in the Network manager. When I click on the network I wish to connect to, GNOME asks for the password like it usually does, then it says "Connecting" and a little wheel starts spinning but automatically freezes (see picture). After a moment, the word "Connecting" and the wheel disappear and I'm still not connected to the Internet. There is no error message.
What I tried
- Upgrading from 16.10 (it works in 16.10, but fails after an upgrade to 17.04)
echo 'options ath9k nohwcrypt=1' | sudo tee -a /etc/modprobe.d/ath9k.conf
- Using other WiFi adapters (all the same problem)
- Using the same live USB on another computer (Internet works)
- Using WICD (and it works fine)
Important: I tried to connect to the Internet through USB (with my phone) and the same problem occurs. I tries to connect for several seconds, then it fails without errors messages. So it doesn't seem to be about the WiFi adapter.
My WiFi adapter is a TP-Link TL-WN722N. The chipset number is AR9271 (Atheros).
More technical details: http://paste.ubuntu.com/24377365/