Upgraded to 17.10 yesterday and I can no longer get 3 displays to work. I am running the Nvidia drivers.
When I enable all three screen via the Nvidia app and restart I end up in a infinite log in loop. As soon as I hit enter on the password the screen goes blank and the logon screen is shown again. I have tried all three options but it is always the same result.
My only way out of this is to pull a graphics card and revert to twin monitors.
Has anyone got three screens working ? Or any ideas of what else I can try?