I set up the Quad Sata Hat with a RPI and dietpi as a nextcloud server in conjunction with 2 HDDs mounted by MDADM. Everything seems to work fine. A couple of days ago I did a dietpi-update. Anyhow, the display does not seem to work anymore.
Any good advice how to reactivate it without facing the danger to mess up the whole systems?
Would really appreciate some good hints.