This xserver doesn't load the intel driver anymore on gen4 and newer. You can get previous behaviour back by copying the template xorg.conf from /usr/share/doc/xserver-xorg-video-intel/xorg.conf to /etc/X11 and restarting lightdm etc.
it could be a kernel bug though ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1604819 Title: intel driver (intel_drv) not loaded To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1604819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs