I was wondering what “don’t work” looks like here, and whether it’s like Problem installing on ubuntu 18.04 server where I was thinking of asking whether people had the Universe repo (some missing items moved).
Software Packages in “xenial”
Software Packages in “bionic”
The above transition might be related to the below transition. I’m not familiar with it or with Duplicati’s uses.
Upcoming shift to Ayatana (App)Indicator(s)
Ubuntu Indicators to Ayatana Indicators Transition
It seems like Duplicati wouldn’t be the only source of mono install directions, so maybe there’s info around.