Similar problem here with Dell D3100...
Have been on 15.04 but after an upgrade to 15.10 it doesn't even detect my external displays.
Tried to reinstall, seems all fine except that the drivers don't load at the end...
Code:
sudo ./displaylink-driver-1.0.138.run
Verifying archive integrity... All good.
Uncompressing DisplayLink Linux Driver 1.0.138 100%
DisplayLink Linux Software 1.0.138 install script called: install
Distribution discovered: Ubuntu 15.10
WARNING: Kernel version 4.2.0-16-generic is not supported. Highest supported version is 3.19.
Installing
Configuring EVDI DKMS module
Registering EVDI kernel module with DKMS
Building EVDI kernel module with DKMS
Installing EVDI kernel module to kernel tree
EVDI kernel module built successfully
Installing x64/DisplayLinkManager
Installing libraries
Installing firmware packages
Installing license file
Adding udev rule for DisplayLink DL-3xxx/5xxx devices