Before we dive into the matter, you first have to understand what DisplayLink is. It is a proprietary graphics transport technology that lets computers connect to one or more external displays over USB, using docks or adapters built around DisplayLink chips.
It works by compressing display data on the host computer and sending it to a chip in the connected device. The chip then decodes it for output to monitors through interfaces such as HDMI or DisplayPort.
On Linux, this support can rub some people the wrong way due to its closed-source nature. That is where Mike Lothian’s (FireBurn) Vino comes in as an open alternative.
Unfortunately, Synaptics owns DisplayLink and has sent Mike cease-and-desist letters alleging that he infringed its DisplayLink patents with his project.
What’s Vino?
Vino is a driver that lets the Linux kernel talk to DisplayLink docks directly. It is meant to replace DisplayLink’s closed-source software and the open source EVDI kernel module that sits beside it.
Mike wrote it with help from Claude Code, and the first version reached the kernel mailing list in June, unfinished. He had faced a communication issue between the dock and the driver and asked other developers for help.
In early July (courtesy of LWN.net), he emailed a Synaptics employee for guidance and mentioned his Rust rewrite of EVDI. About two weeks later, a different employee replied.
That reply said his Rust rewrite of EVDI was not a thing of concern. Rather, the concern was the DisplayLink protocol and codec, which Synaptics believes are covered by its patents. Lawyers get involved
A cease-and-desist letter followed on August 17. It told Mike to stop development and withdraw anything he had submitted to maintainers and hosting sites, with a signed confirmation due by August 28.
An appendix listed over 125 patents without saying which applied. Mike posted a working version 3 of Vino on August 26 and asked Synaptics the next day which claims they had in mind.
The answer came in October as claim charts. They map one claim from each of two patents, GB2484736 and GB2485613, to his source code.
The October 5 letter said Synaptics would seek $25,000 for the cost of preparing those charts if Mike missed an October 11 deadline, with the figure rising by at least $25,000 each week.
Mike replied on October 6 (message 8) with an offer to pause public work on the encoding code the charts point to if Synaptics paused the deadline and the weekly charge. He also asked about licensing that code for non-commercial use.
On October 7, Synaptics said it would grant no patent license or promise not to sue and set October 18 as a final deadline.
What I can see so far is a very aggressive patent infringement witch hunt against a lone open source developer who was quite open to communication.
Synaptics took about three weeks to answer his request for specifics, then followed with a potentially life-ruining $25,000 demand that compounds weekly.
Clean room design quirks
Mike describes Vino as a clean-room driver and says he reverse engineered it from captured USB traffic and vendor programs.
If you didn’t know, in a clean-room recreation, one party studies the original implementation, then writes a description, and a separate party builds the new code from that description alone.
It is meant to act as a defense against copyright claims because it shows nothing was copied. Synaptics’ July reply argues that clean-room or independently written code can still infringe a patent.
The timing
Vino also lands in a busy stretch for AI-assisted reverse engineering, from smart TV cleanups to office suite clones. Legal pressure has reached other AI-built projects too.
Mike has already taken down the Vino repository in response to the demands, and Synaptics has not made a public statement so far.
Only time will tell what happens to the work, and I hope someone forked it before it went offline, as that would give others a good starting point to build on.
Well yes, but proprietary only works with patents. All it means without them is you have to decompile it and reverse engineer it. Which is pretty easy to do these days.
But I’d push back on the idea of “The same code you made” being special. Code is just language and math put together. Take a sentence. “Hi, how are you?” under patent rules once someone patents that specific way to say this nobody else can do it. You can do the same function but have to phrase it differently. Like “Hello, are you well?” and eventually this just gets silly. Being the first to do something the most obvious way to do it shouldn’t give you a right to not let anyone else do it that way.
My argument is based on a fundamentally different way of viewing invention. Many people think of it as a singular inventor/genius coming up with an idea nobody had before, and then anyone else who has the same idea after them is “stealing” it. This is just silly imo. That inventor is not special.
Inventions do not happen because someone has a special idea. They happen because the material conditions exist to make them possible. You wouldn’t invent the car before the steam engine for example. Or the book before paper. Take Calculus. Isaac Newton and Gottfried Wilhelm Leibniz were getting to the same conclusion (inventing calculus) around the same time entirely independently. Because it just so happened they were alive at the right time to do so.
In general inventions will arise some time after the conditions to create them exist. This relies on the work of all human civilization prior, and so these inventions should be the collective property of all humanity.
If one accepts the premise that discovery is an inevitable result of material conditions, the moral and economic justification for patents collapses. In this framework, the patent holder isn’t being rewarded for creating something that otherwise wouldn’t exist; they are being rewarded for being the first to reach a finish line that many others were already approaching. The patent then functions as a tool to capture a monopoly over a natural progression of knowledge, effectively taxing society for a discovery that would have happened regardless.
I’m not really trying to argue with you here btw. Just explaining my complete view on the topic. I get that you might agree with some of this, and disagree with some. I just wanted you to have a full picture of where I’m coming from.
Your view I feel would only work in a communist, or at least extremely socialist, society. Under the American form of capitalism, that would essentially make being an inventor worthless. Whatever you invent will just be copied by the biggest competitor in the field. A system of necessary monopolies.
I don’t disagree that your view (under a system of extreme socialism) is a better way to set up a society than American capitalism. But unless we abolish capitalism, I think what you’re arguing for is worse for the proletariat than what we have.