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How can I fix a 404 Error using a PPA?

I was trying to install it and I got something like this...

W: Failed to fetch http://ppa.launchpad.net/freenx-team/ppa/ubuntu/dists/oneiric/main/source/Sources  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/freenx-team/ppa/ubuntu/dists/oneiric/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

Can someone guide me through installing it on Ubuntu's latest?


marked as duplicate by Anwar, Mitch, user76204, Takkat, hexafraction Sep 24 '12 at 19:40

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • community info here (help.ubuntu.com/community/FreeNX) - looks like the freenx team has gone very very quiet since maverick. You could use the community info and try to install on oneiric. Tell us what you find out. – fossfreedom Oct 24 '11 at 23:12
  • I tried but it seems like the repository does not work with Oneric, (thats what the error above is from, trying to apt-get update before installing) – Andre Oct 24 '11 at 23:26
  • 1
    follow the guide i gave you - it shows how to tweak the install to install it on later versions of ubuntu. – fossfreedom Oct 25 '11 at 6:20

What I ended up doing was installing the free Version of NoMachine NX Server, located hefer http://www.nomachine.com/select-package-server.php?id=1&ids=2

The free version is limited to 2 sessions but I figured that should be enough to cover my needs right now. Thanks for your input.


I would recommend x2go. It's based on NX, but the server is incompatible with FreeNX and Nomachine. But it has things like PulseAudio integration, which makes it a little nicer to play with since you can then use VoIP, etc. Just add deb http://x2go.obviously-nice.de/deb/ lenny main to your repos, update apt, and install x2goserver and then x2goclient on your client, from the same archive.

  • x2go.org/uploads/tx_skpdfviewer/installation_x2go_ubuntu_en.pdf I was following the tutorial and my server is not able to retrieve the key. Any help? gpg: requesting key 96F89133 from hkp server wwwkeys.eu.pgp.net – Andre Oct 24 '11 at 23:32
  • gpg: requesting key 96F89133 from hkp server wwwkeys.eu.pgp.net gpg: keyserver timed out gpg: keyserver receive failed: keyserver error – Andre Oct 24 '11 at 23:55
  • They haven't signed it. Just ignore it and install it. It's generally a bad advise, but in this case.. Well. The world isn't perfect. :) – Jo-Erlend Schinstad Oct 25 '11 at 0:59
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    The X2go repository has migrated, use launchpad.net/~x2go/+archive/stable instead. – Lekensteyn Oct 25 '11 at 13:49

I wrote a script to compile and instal freenx server on Ubuntu 11.10. See my blog:


sudo add-apt-repository ppa:freenx-team

sudo apt-get update

sudo aptitude install freenx

after that use nxsetup to install necessary files and create the special user “nx” type these "sudo /usr/lib/nx/nxsetup --install" and if you want to install opensource client for freenx use QTNX,QTNX NX client for QT install qtnx using the following command "sudo apt-get install qtnx"

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