Sorry, bit of info about versions
network-manager/stable,now 1.6.2-3 amd64 [installed] network-manager-gnome/stable,now 1.4.4-1 amd64 [installed] On Mon, 5 Mar 2018 01:19:56 -0500 Andrei Audzei <bigtalker...@gmail.com> wrote: > I have the same message when I try to use encrypted user key for wifi > connection (TLS, WPA & WPA2 Enterprise). > > I found a mention about fresh same issue on > https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1339607?comments=all , > and one point of last (#16) comment can be a root of trouble. > > On my laptop I use full disk encryption LVM. So, I moved my protected key > to mounted USB flash - and wifi connection works fine! I think, that > problem in disk encryption. Can you approve this and fix it?