The song makes more sense to me now ... but as you comment, it is still a little cryptic: perhaps "giving up" relates to life itself, or an insensitivity to love ? Maybe we are not meant to know ?
... and what, I wonder, is the significance of waiting, whilst looking at a "blank screen" ?
My heartfelt thanks for your help.
On-line Portugese to English translators are not very good - so I need the help of a human being ! Many thanks in advance.