Current status: with BIOS A15 and kernel 4.2.0-11-generic I was unable to get the external screen to connect at all in an X session (a VT worked more or less fine). Now using kernel 4.3.0-040300rc3-generic and so far no visible graphical problems at all. I will keep you updated.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1492170 Title: Screen flicker and resolution problems after hot-plug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1492170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs