I just retracted my flag here since karel has put the stuff from the link... I'm not sure whether it needs further editing though :S askubuntu.com/questions/341975/…
gah.... it's still not an answer though, this tells what they did to fix the trackpad that broke the other thing!
I'm such an idiot
>_< now idk what to do... answer is full of irrelevant information
don't need to flag the comment. useful somehow i think
@Zanna I rollbacked. In my eyes the original problem stays same at that point. installing in encrypted drive. They only solved their sub-problem of not having DE.