I got messaged during one of my upgrades from Ubuntu 14.04 to 16.04 that
systemd-sysv init gvfs
failed to install.
At the end of the install, it said the install had failed, and it was going to revert with
dpkg --configure -a.
From previous experience with Ubuntu 14.04 upgrades, I knew this would fail, so I:
opened a second Terminal, WITHOUT clicking close on that error and typed:
apt install gvfs init systemd-sysv
which installed tons of packages–the ones that failed depending on them.
in the same new Terminal, I typed:
and my PC magically worked with Ubuntu 16.04