It used to work but I guess one of the updates broke it. I can connect to the wifi on my phone and other OS's. Unsure of what would cause this. I have tried deleting the profile for each connection and re-entering passwords but nothing. IF I remove passwords for the connections it will work.
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4 Answers
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Try this if you have network-manager enabled :
sudo nmcli dev wifi
to find your wifi ssid
and
sudo nmcli dev wifi connect <your ssid> password <your pass>
Looks like network-manager is waiting for root permission.

abu_bua
- 10,783

user3545361
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It worked! Thanks, although the only bad thing is that, in your bash history the wifi password, will remain visible. – Edenshaw Nov 27 '17 at 12:44
3
If you don't want your password to appear in your history just leave out the password part and add the
-a
option and it will ask for it after you hit enter:
sudo nmcli -a dev wifi connect <your ssid>
From man nmcli
-a | --ask When using this option nmcli will stop and ask for any missing
required arguments, so do not use this option for non-interactive purposes like
scripts. This option controls, for example, whether you will be prompted for a
password if it is required for connecting to a network.

abu_bua
- 10,783
1
In my case it was something with the KDE Wallet system. I've installed some updates, and those seem to wipe my old wallet and make it corrupted - ie the wallet could not been opened.
The fix was to create a new wallet and set it as default.

CanonicEpicure
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0
It happened to me and I hadn't done anything. Turned out there was something wrong with the "Bbox" from Bouygues ISP. After 2 hours on the phone they sorted it out.

Alain Reve
- 139
dmesg
. Try to sign into the network and then checkdmesg
for any new info. If you don't find any useful info, please post the info described here: http://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-information-is-needed-to-diagnos thanks! – mchid Jan 09 '17 at 19:59