Preliminary Testing Builds

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Would you like to always use the latest development version of TDE on a Debian-based distributions (Debian, Ubuntu, Devuan)? Preliminary packages of the next major or minor release - called "preliminary testing builds" (PTB) - are available for testing for selected versions of those distributions.

PTB packages are hosted in a regular apt repository (alternative apt source), so you'll be able to get regular updates.

Installing Preliminary Testing Builds

To use the preliminary testing builds you need to add the following lines to your /etc/apt/sources.list.
Please replace all references to <your-distribution> with your lowercase appropriate version: e.g "buster" or "bionic".

# Trinity preliminary testing builds
deb <your-distribution> deps main
deb-src <your-distribution> deps main

Example for Debian 10 - Buster:

# Trinity preliminary testing builds
deb buster deps main
deb-src buster deps main

Packages are signed using GPG key ID A04BE668. To install the GPG key you can use any public GPG keyserver, for example:

sudo apt-key adv --keyserver --recv-key A04BE668

Note: In new Debian Stretch installations the dirmngr package, which is necessary for gnupg, may be missing. To make the apt-key work properly, install the dirmngr package first.

Another option to install GPG key is to manually download and install package axis-archive-keyring. The advantage is that this method of installation is not dependent on the availability of the key server. Another advantage is that the key is not integrated into the global apt keyring, but is installed as a separate file:

dpkg -i axis-archive-keyring_2014.06.21.a_all.deb

Available distributions and architectures

The PTB apt repository includes packages for various distributions and hardware architectures. The current list of supported distributions and architectures is as follows:



  • unstable - Sid : amd64, i386, armhf
  • 10.x - Buster : amd64, i386, armhf
  • 9.x - Stretch : amd64, i386, armhf


  • unstable - Ceres : Use Debian Sid.
  • 3.x - Beowulf : Use Debian Buster.
  • 2.x - Ascii : Use Debian Stretch.


  • 19.04 - Disco: amd64, i386
  • 18.10 - Cosmic: amd64, i386
  • 18.04 - Bionic: amd64, i386
  • 17.10 - Artful: amd64, i386
  • 16.04 - Xenial: amd64, i386


For any further question or problem, please refer to the TDE mailing lists or bug tracker.