Debian recognizes usb-c docking station, but monitors do not work

With Debian stable and proprietary drivers on a Lenovo x1 3rd gen--but not with MS windows 10 on an older Lenovo laptop (using the usb-c to usb-a) and a HP laptop (using usb-c)--I have a problem with the *ThinkPad Hybrid USB-C with USB-A Dock*: The USB-devices mouse, keyboard, and headset works fine; but the two monitors do not (akin to Pauxlo's experience ). What to do? 1. forget about using this docking station (costly) 2. install Ubuntu (well, Debian is otherwise nice and installed) 3. try to make DisplayLink for Ubuntu [2] [3] work on Debian (may be quite involved) 4. ask the question elsewhere e.g. on the displaylink forum, on the linux-hardware.org forum, et cetera. 5. other alternatives I have found related issues, some which are solved, others which are still unsolved: - detected on Debian 11 and Debian Testing with "snd_usb_audio" driver according to linux-hardware.org - Debian Buster with a link to solution for arch linux - solutions and non-solutions [7] [8] for Ubuntu distributions - issue on Fedora, solution on RHEL8 and so on - in case of high resolution, apt-get install evdi-dkms libevdi0 has been suggested for Debian [10]

$ lsusb
Bus 004 Device 011: ID 17e9:6015 DisplayLink ThinkPad Hybrid USB-C with USB-A Dock