Synaptics patent claims stop work on DisplayLink drivers(lwn.net)
480 points by speckx 1 day ago | 266 comments
tl;dr: Linux developer Mike Lothian attempted to write an improved Rust-based DRM/KMS driver (Vino) for his DisplayLink dock after the vendor's proprietary binary kept crashing, but Synaptics responded with cease-and-desist letters citing 125 patents and threatening $25,000/week in escalating penalties. Although Synaptics is an Open Invention Network member, OIN determined its protections don't apply because codecs are explicitly excluded from its Linux System Definition. Lothian has taken down the repository and shelved upstream submission, unable to afford a legal defense—a reminder that software patents remain a serious threat to open-source development.
HN Discussion:
  • ↑Synaptics' cease-and-desist demand for monetary compensation is absurd and legally baseless
  • ↑DisplayLink technology is outdated and inferior to modern Thunderbolt/USB-C DP alt mode alternatives
  • ↑Personal experience confirms DisplayLink drivers are buggy and unreliable on Linux
  • ↑Reverse engineering should not legally constitute patent infringement given patents require public disclosure
  • •Possible defense resources exist, such as GitHub's patent troll defense fund or onsemi acquisition context