Login loop after installing Displayink 1.4 on Ubuntu 17.10

[ab.simas]

XPS15 9560 (i7-7700Q) with Ubuntu 17.10.

Using latest drivers for D3100 (supports 17.04 and 16.04) works fine with one flaw:

log-in screen enters an infinite loop, i.e. click user, enter pwd, click user, enter pwd, etc.

To solve this, had to restart gdm when on the login window:

1. CTRL+ALT+F3
2. Login via the terminal.
3. sudo service gdm restart
4. Login via the UI.

This may be caused because my HDD was encrypted and a password is requested during boot when (presumably) the DP ports are still unavailable.