The displayport output is physically connected to only the nvidia GPU on this generation of lenovo machines with optimus, you'll have to switch to the nvidia gpu in the bios to use it unfortunately.
** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1058782 Title: External DisplayPort display is not recognized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1058782/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp