Sounds like it's maybe connected to a hardware multiplexer ("mux"). I don't have experience with such systems, but you might find it useful to look at these:
https://wiki.archlinux.org/index.php/Hybrid_graphics \https://01.org/linuxgraphics/gfx-docs/drm/gpu/vga-switcheroo.html -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1846090 Title: Asus UX580GD (GDX1505:00 27C6:01F1) Touchpad (LCD) screen support To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1846090/+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