Were you able to remedy your Display Link issue. I saw your posting last night and gave it a short for my old Librem15v4…and it worked. I have a 27inch on the left, my laptop in the center and have a Samsung 49inch curved monitor that is able to split into two screens. Soooo…essentially, I have 4 screens. Works well so far.
comment the providers=(… line in the displaylink-debian.sh script.
Was then able to finish the installation and restart, however when running systemctl restart displaylink-driver.service it fails complaining about the evdi module is not found in /lib/modules/… (which is output from modprobe evdi), but the module evdi.ko does exist there. Not sure how to fix it, but it seems like it might be possible to get it working.