Displaylink

DisplayLink monitors

In order to use Displaylink monitors over USB, such as the ASUS MB16AC, the displaylink driver needs to be installed:

$ services.xserver.videoDrivers = [ "displaylink" "modesetting" ];

Since these drivers depend on binary unfree blobs, you will need to first add it to your nix-store. Go to https://www.displaylink.com/downloads/ubuntu to get the appropriate driver version and note the download URL you get after accepting the EULA. Then (example):

$ nix-prefetch-url --name displaylink.zip http://assets.displaylink.com/live/downloads/software/f1369_DisplayLink%20USB%20Graphics%20Software%20for%20Ubuntu%205.2.zip\?AWSAccessKeyId\=AKIAJHGQWPVXWHEDJUEA\&Expires\=1579838008\&Signature\=4UidRIwBYLZPHSf2EkcyLFKb%2B8o%3D

Before the monitor can be used by xrandr, you will need to run the following command, which can be added to e.g. your ~/.xprofile:

$ xrandr --setprovideroutputsource 1 0

As of right now (2020-01-24), the package in the nixos stable channel is out of date, so you may need to override it from nixpkgs.