Screen rotation with new 1.4 Pi-Image
just want to share a solved issue with you. I had the problem that the screen rotation did not work anylonge with the new pi image. Activating the legacy drivers was one option to solve that issue, but i asked the support and got a better option that works with the new graphic drivers.
The support says: "What works is rotating orientation for the x window system. Just run in terminal
DISPLAY=:0 sudo -AE arandr
and use the tool on screen to change settings, save and reboot. Even if startup starts inverted it will fix with the chromium interface."
This solved my issue.