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Displaylink D3100 now supports Ubuntu 14.04
As I had to search around for the info, I thought I'd post it here for anyone else who's been wanting to run the Dell D3100 4K Docking Station with Ubuntu 14.04 (instead of moving to non-LTS 15.10) on an XPS 13 (I'm using a Haswell 2014 model).
The details are on the DisplayLink site: http://support.displaylink.com/knowledgebase/articles/615714#ubuntu
You'll have to upgrade to the 3.16 Kernel as mention in the link above. As a result, note that if you've previously blacklisted the i2c_hid driver (because of some issue with it that I don't remember details of) then you need to un-blacklist it else the touchpad stops working:
$ sudo rm /etc/modprobe.d/blacklist_i2c_hid.conf
cloojure
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Posted January 28th, 2016 16:00
Please see the below link re my 2013 (model 9333) XPS 13 and the D3100 docking station. I had some cursor flicker which was cured by moving to Ubuntu 15.10 (from 15.04).
Alan
http://en.community.dell.com/techcenter/os-applications/f/4613/p/19660529/20847512#20847512