[Arctica Project] Release of nx-libs (version


NX is a software suite which implements very efficient compression of the X11 protocol. This increases performance when using X applications over a network, especially a slow one.

NX (v3) has been originally developed by NoMachine and has been Free Software ever since. Since NoMachine obsoleted NX (v3) some time back in 2013/2014, the maintenance has been continued by a versatile group of developers. The work on NX (v3) is being continued under the project name "nx-libs".

Release Announcement

On Friday, May 5th 2017, version of nx-libs has been released [1].


A special thanks goes to Ulrich Sibiller for tracking down a regression bug that caused a tremendously slowed down keyboard input on high latency connections. Thanks for that!

Another thanks goes to the Debian project for indirectly providing us with so many build platforms. We are nearly at the point where nx-libs builds on all architectures supported by the Debian project. (Runtime stability is a completely different issue, we will get to this soon).

Changes between and

  • Include Debian patches, re-introducing GNU/Hurd and GNU/kFreeBSD support. Thanks to various porters on #debian-ports and #debian-hurd for feedback (esp. Paul Wise, James Clark, and Samuel Thibault).
  • Revert "Switch from using libNX_X11's deprecated XKeycodeToKeysym() function to using XGetKeyboardMapping()."
  • Mark XKeycodeToKeysym() function as not deprecated in libNX_X11 as using XGetKeyboardMapping() (as suggested by X.org devs) in nxagent is no option for us. XGetKeyboardMapping() simply creates far too many round trips for our taste.

Change Log

The complete list of changes (since can be obtained from here.

Known Issues

A list of known issues can be obtained from the nx-libs issue tracker [issues].

Binary Builds

You can obtain binary builds of nx-libs for Debian (jessie, stretch, unstable) and Ubuntu (trusty, xenial) via these apt-URLs:

Our package server's archive key is: 0x98DE3101 (fingerprint: 7A49 CD37 EBAE 2501 B9B4 F7EA A868 0F55 98DE 3101). Use this command to make APT trust our package server:

 wget -qO - http://packages.arctica-project.org/archive.key | sudo apt-key add -

The nx-libs software project brings to you the binary packages nxproxy (client-side component) and nxagent (nx-X11 server, server-side component). The nxagent Xserver can be used from remote sessions (via nxcomp compression library) or as a next Xserver.

Ubuntu developers, please note: we have added nightly builds for Ubuntu latest to our build server. At the moment, you can obtain nx-libs builds for Ubuntu 16.10 (yakkety) and 17.04 (zenial) as nightly builds.