I upgraded kubuntu version 14.10 to 15.10, and it works fine except that I noticed the startup is slow. googleing the problem, I found this
and it seems that
is the problem. So I googled how to disable it, and found
systemctl disable NetworkManager-wait-online.service
and that didn't work, then I found
systemctl mask NetworkManager-wait-online.service
but that didn't work either
So, any ideas how I could disable this service?