Debian 9 - installed 2 days ago. Installed firmware-misc-nonfree_20161130-3_all.deb. Os is recognizing wifi adapter and network manager is showing all the available connections. No matter what I try, it won't connect. Any tips or solutions ? Thanks
In my own case, that could be fixed by
$ apt install gnome-keyring
Actually I could connect to any previously saved networks, but when trying to connect to something else,
nm-applet would not be able to popup the password input box, hence silently prevented me to connect to the network.
Similar report: https://bbs.archlinux.org/viewtopic.php?id=185742.