Synaptics patent claims halt DisplayLink driver work
The gist
Synaptics sent hobbyist developer Mike Lothian a cease-and-desist over his Vino DisplayLink driver, citing two UK patents.
The dispute tests how far reverse-engineered Linux drivers can go against proprietary hardware protocols.
How it unfolded
- 2022DisplayLink is acquired by Synaptics.
- Jun 17, 2026Lothian posts the first patch series for Vino to the kernel's dri-devel list as an RFC, calling it incomplete, and opens an issue on the EVDI GitHub repository outlining his reverse-engineering approach; there is no reply.
- Jul 20, 2026Synaptics' Michal Lukaszek replies that DisplayLink is not an open standard and that its protocol, codec and other technologies are proprietary and protected by patents in several jurisdictions, including the UK.
Key terms
- DRM/KMS
- A Linux kernel subsystem that interfaces with GPUs and handles display mode setting for graphics stacks.
- Open Invention Network
- A patent-licensing company that grants royalty-free licenses to members who agree not to assert patents against Linux.
Source: Wikipedia