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RPM sources for the DisplayLink USB display adapters

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DisplayLink RPM

Build Status

This is the recipe for building the DisplayLink driver in a RPM package for Fedora and CentOS. This driver supports the following device families: - DL-6xxx - DL-5xxx - DL-41xx - DL-3xxx

The package includes the Open Source evdi library.

Packages get automatically built by Travis CI and get uploaded to GitHub releases.


EDIT: now buildable cleanly via .spec file (in mock f.e.). Download files via

make srpm

In order to compile the driver, just use make. The Makefile should download the file for you.

Secure boot on Fedora

To use displaylink-rpm and the evdi kernel module with secure boot enabled on Fedora you need to sign the module with an enrolled Machine Owner Key (MOK).

First create a self signed MOK:

$ openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER -out \
MOK.der -nodes -days 36500 -subj "/CN=Displaylink/"
Then register the MOK with secure boot:
$ sudo mokutil --import MOK.der
Then reboot your Fedora host and follow the instructions to enroll the key.

Now you can sign the evdi module. This must be done for every kernel upgrade:

$ sudo modinfo -n evdi
$ sudo unxz $(modinfo -n evdi)
$ sudo /usr/src/kernels/$(uname -r)/scripts/sign-file sha256 ./MOK.priv \
./MOK.der /lib/modules/$(uname -r)/extra/evdi.ko
$ xz -f /lib/modules/$(uname -r)/extra/evdi.ko
Now any display, hdmi and/or dvi ports on your docking station should work, and the displaylink.service should run.

Hardware-specific behavior

Dell D6000

When used with the Dell D6000 docking station, DisplayLink 5.1.26 regularly loses communication with attached monitors, causing them to go blank and enter power-saving mode. At the time the monitors blank, the kernel logs two error messages:

kernel: usb : Disable of device-initiated U1 failed.
kernel: usb : Disable of device-initiated U2 failed.

To work around this issue, disable power management for the audio device by commenting out a line in

### Automatically suspend sinks/sources that become idle for too long
# load-module module-suspend-on-idle

Development Builds

Generally we want to track the current stable release of the evdi library. However, Fedora kernels are often much newer than those officially supported by that release and it is not uncommon for a new kernel to completely break the build. This can leave you in a situation where you cannot upgrade your kernel without sacrificing your displaylink devices. This is not great if the new kernel has important security or performance fixes.

Fortunately the evdi developers are usually pretty quick to make the appropriate fixes on their

branch. You can build a version of the rpm that uses the current edvi
branch with:
make rawhide

Of course this

branch will also include some experimental and less tested changes that may break things in other unexpected ways. So you should prefer the mainline build if it works, but if it breaks, you have the option of making a


The easiest way to contribute with the package is to fork it and send a pull request in GitHub.

There are two main kind of contributions: either a new upstream version is released or a modification in the packaging is proposed.

There is a variable called

for packaging purposes. That variable should be set to 1 when contributing a new upstream version release, and incremented in one when adding any other functionality to the specfile for the same upstream version.

New Upstream release

From time to time, DisplayLink will update their driver. We try to do so, but for that we usually rely on pull requests.

We manage three different upstream numbers for versioning:

  1. evdi kernel driver version
  2. DisplayLinkManager daemon and libraries version
  3. Download ID number from DisplayLink (for automatic zip retrieval)

These variables need to be changed in the following places:

  • Makefile
      is the DisplayLinkManager version
      is currently the evdi driver version
      is the
      query parameter in DisplayLink website to download the zip
  • .travis.yml
      is the same as in the Makefile
      is the same version as in Makefile

Also, please update the changelog at the bottom of the displaylink.spec file.

Packaging change

When changing a packaging rule, please increment the

variable by one in both displaylink.spec and .travis.yml (so that Travis can release the new artifact automatically).

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