To be clear:
The Linux Kernel supports the DisplayLink
1x0 and
1x5 series chips, which are to date the most commonly used. These are limited to 16 bit color, but do function well.
DisplayLink has declined to release information on the
3x0 series of chips (the USB3 with Ethernet models).
However, even with basic support built into Linux, getting a multi monitor display is still challenging, as multiple questions on "ask ubuntu" attest:
http://askubuntu.com/questions/6382/...ecent-version/
A little bit of challenge grant money from DisplayLink could turn that around, and make DisplayLink plug and play on most Linux distributions.