Thanks for reaching out to us, I am sorry this is not working as expected.
We do not support our USB graphics adapters with Linux operating systems. We support Linux on our products whenever possible. (Plugable’s founder has even submitted driver code over the years.) Unfortunately USB graphics support in Linux hasn’t reached the point where we can recommend this combination. We’re hoping that will change as development continues, and we’ll certainly update our product listings to reflect this change if and when things get to the point where we can recommend it with confidence.
DisplayLink, the manufacturer of the chipset and software used in our USB graphics adapters and docking stations does provide drivers for Ubuntu Linux here ( https://www.displaylink.com/downloads/ubuntu ) and provides limited support for Linux through their support site here ( https://support.displaylink.com/knowledgebase/topics/103927-troubleshooting-ubuntu ). Linux Mint is based on Ubuntu and may be compatible with the Ubuntu driver however we have not tested this and do not recommend this configuration.
As for the flashing, this can be caused by a variety of issues, I would like to start by getting some additional information from your system. If you would, please boot to Windows and keep the hub connected and both monitors attached and attach the output of our diagnostic utility PlugDebug ( http://plugable.com/support/plugdebug ) to an email to firstname.lastname@example.org with the subject line “Ticket #261095 - Attention Pat” as this will allow us to examine some log files from your system to help determine the next steps.
I can also check to see if your system’s hardware will be compatible with one of our docking stations that works better with Linux.