Try updating your intel ddx -- nouveau is not responsible for the contents of the images it renders when in reverse-prime mode -- the primary gpu is (in your case, intel).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1228506 Title: [Lenovo ThinkPad W530] Unsynchronised rendering on secondary displays To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1228506/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
