Solutions:
- Ctrl+Atl+t
- Type
nmcli con edit type pppoe con-name ANY_NAME_OF_DSL_YOU_LIKE
, which will open an interactive prompt. - Type
set pppoe.username YOUR_DSL_ACCOUNT
, and so as the password. - Type
save
, enter. - Type
quit
, enter. - Finally, you\'ve got this:
Have a nice day in Ubuntu 18.04~