Because it shows up on Linux as an output of the integrated graphics card (DP-X-Y in xrandr), and it also works in the BIOS or during Windows installation. Bef

Because it shows up on Linux as an output of the integrated graphics card (DP-X-Y in xrandr), and it also works in the BIOS or during Windows installation. Before this, I had a DisplayLink dock that would not work on Linux without specific drivers. The HP specs [0] say the number of displays depends on the computer's graphics card. Don't know if there's anything in between DisplayLink and pass-through, though, so I can't be certain it's not that. [0] https://support.hp.com/us-en/product/hp-usb-c-dock-g5/27767205/document/c06386359 https://support.hp.com/us-en/product/hp-usb-c-dock-g5/277672... Specifically: For USB-C functionality, host PC must support the DisplayPort Alt mode protocol through its USB-C port.