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[SOLVED] Re: Cannot connect to WiFi

On Wed, 15 Nov 2017 19:48:00 +0000, Juan R. de Silva wrote:

> Hi folks,
> My ISP replaced my old modem with the new one. I changed my WiFi
> Authentication key and the name of the WiFi network. Then I made Network
> Manager to "forget" my old WiFi. Network Manager finds my new WiFi but I
> cannot connect to it.
> When "Authentication Key is required" dialog pops up and the key is
> entered,j Connect button remains grayed out/disabled. Thus there is no
> way to get through but pressing Cancel button.
> I'm running Debian Stretch.
> Could somebody help. It's quite urgent now.

The problem is solved. It was Bob Weber post that led me to solution, though 
the problem was a kind of different.

Here what I mean. Just by looking at my password, as entered into NM, I did 
not find any weird characters or trailing spaces in it. A typo was exclued 
since I copy-pasted it from my password manager storage. I was in loss and 
just for no reason, when in GNOME "Authentication required" dialog pressed 
Backspace once... All at a sudden I get through and connected!..

Then I copied the password I uncessfully tried to use in Network Manager and 
pasted it bellow a password copied from my modem/router (or as David rightfully 
called it "gateway" device).

That was it. The original password was 64 characters and the one in my modem 
was only 63 characters. Aparantly the modem has a limitation on the password 
length, which it neither shows to a user. Instead it sighlently cuts off any 
excessive characters.

Silly programmed device wasted 2 days of my time. Anyway I'm a happy bunny 
now, since it solved. :-)

Thanks folks. And the bigest credit goes to Bob.