Linux developer Mike Lothian has pulled his open-source driver Vino off GitHub after Synaptics, which bought DisplayLink in 2022, accused it of infringing its patents. LWN reported the dispute on 10 November 2026, based on correspondence Lothian made public on the kernel mailing lists.
What Vino is. It's a Rust DRM/KMS kernel driver for newer DisplayLink DL3 docks, the USB docks used with many laptops. Lothian wrote it with help from an LLM. Gadget Review says he used Claude Code and tested it on a Dell D6000 dock. He started it because the vendor's DisplayLink Manager software is closed-source and x86-only, and it kept crashing for him. He describes Vino as clean-room reverse engineering. He posted it to the dri-devel list for review on 17 June, and his v3 on 26 August could drive three generations of DL3 docks without vendor software.
What Synaptics demanded. According to LWN's timeline, a Synaptics representative said in July that the DisplayLink protocol is proprietary and covered by patents. A cease-and-desist letter dated 17 August listed 125 patents without saying which claims applied. A second letter on 5 October named two UK patents, GB2484736B and GB2485613B, and LWN reports a demand for $25,000 that would grow by $25,000 for each week of non-compliance. Gadget Review gives no dollar figure, but says Synaptics threatened to bill Lothian for the work of explaining how Vino infringes. Synaptics does not claim any code was copied. Its position is that an independent implementation can still infringe a patent.
Why he gave up. Lothian disputes both infringement and the patents' validity. He hoped the Open Invention Network, which both he and Synaptics belong to, would cover him. On 23 October, OIN's CEO said it would not, because codecs fall outside OIN's Linux System Definition. As LWN quotes him, Lothian says Vino "has to remain local" because he "can't afford to defend" himself. No court has ruled on infringement or validity. For now, Linux users of DisplayLink docks have only the closed vendor driver.
