I am following the instructions here to upgrade Ubuntu from 17.10 to 18.04. But when I run update-manager -d
I get errors:
No protocol specified Unable to init server: Could not connect: Connection refused No protocol specified Unable to init server: Could not connect: Connection refused No protocol specified Unable to init server: Could not connect: Connection refused
(update-manager:7789): Gtk-WARNING **: cannot open display: :0
-d
option as 18.04 has been released (-d or development-release is now 19.04 where you're a few steps behind). If using a terminal, upgrade first to latest 17.10 (sudo apt update && sudo apt dist-upgrade
) thendo-release-upgrade
is a non-gui alternative.