intel-virtual-output man page
intel-virtual-output — Utility for connecting the Integrated Intel GPU to discrete outputs
intel-virtual-output [<remote display>] <output name>...
intel-virtual-output is a utility for Intel integrated graphics chipsets on hybrid systems. The tool connects local VirtualHeads to a remote output, allowing the primary display to extend onto the remote outputs.
The xf86-video-intel driver is part of the X.Org and Freedesktop.org umbrella projects. Details on bug reporting can be found at https://01.org/linuxgraphics/documentation/how-report-bugs. Mailing lists are also commonly used to report experiences and ask questions about configuration and other topics. See lists.freedesktop.org for more information (the firstname.lastname@example.org mailing list is the most appropriate place to ask X.Org and driver related questions).
intel(4), Xorg(1), xorg.conf(5), Xserver(1), X(7)