Setting up desktop-file-utils (0.20-0ubuntu2) ...
Configuration file `/etc/gnome/defaults.list'
==> Modified (by you or by a script)
since installation. ==> Package distributor has shipped
an updated version. What would you like to do about it ?
Your options are: Y or I:install the package maintainer's
version N or O : keep your currently-installed version D :
show the differences between the versions Z : start a shell
to examine the situation The default action is to keep your
current version. * defaults.list (Y/I/N/O/D/Z) [default=N] ?
Write failed: Broken pipe

sudo service network-manager start

your-username-here ALL=NOPASSWD: service network-manager start

sudo apt-get install -f