Please check to see if the kernel is aware of the DisplayPort being connected (while you have a monitor connected):
grep connected /sys/class/drm/*/status ** Package changed: ubuntu => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2096668 Title: Intel® HD Graphics 4000 (IVB GT2) - DisplayPort no longer availabe To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2096668/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs