I’m also able to run DisplayLink stack at home with another DisplayLink
supporting device OWC USB-C Dual HDMI Display Adapter. So far the tasks
to be done to enable displaylink:

* Ubuntu side

  1. To port 1.14.10 into Ubuntu because latest displaylink-driver
(versioned 6.1.1-17) depends on evdi >= 1.14.9, and we have 1.14.8 for
Questing/Plucky, 1.14.6 for Oracular, and 1.14.2 for Noble. This will be
LP: #2110682.

  2. To determine the right version of displaylink-driver to be
installed. Then that means backport of evdi packages from a later series
to Noble.

* Synaptics side

  1. Update displaylink-driver debian/control field Depends as Depends:
evdi-modules | evdi-dkms, libc6 ( >= 2.31)`

     evdi-modules and evdi-dkms will be provided by linux-modules-evdi,
and the version will be ubuntu kernel version. There is still a package
named evdi-dkms, and its version follows Synaptics' version. However
that means there are two different version schemes, and therefore
version upper/lower bounds for Depends control field become invalid.
There might be a better way to restrict driver version dependencies.

  2. /opt/displaylink/DisplayLinkManager should dlopen libevdi.so.1 ,
rather than libevdi.so. The former is provided by Ubuntu package
libevdi1, and the latter is by libevdi-dev. displaylink-driver depends
on neither, but it should really depend on libevdi1.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2110634

Title:
  Include support of Synaptics display link

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Synaptics display link
  (https://www.synaptics.com/products/displaylink-graphics) kernel
  drivers has been packaged into Ubuntu archive as
  https://launchpad.net/ubuntu/+source/evdi since Focal, and we may need
  to package it as linux-modules-evdi for installation on secureboot
  enabled platforms.

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