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:
- CTRL+ALT+F3
- Login via the terminal.
- sudo service gdm restart
- 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.