Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I would like to update my KDE Desktop. I am using Kubuntu 11.10 with KDE 4.7, but I would like to install KDE 4.8. I think that I have to add tne next PPA: kubuntu-ppa/backports, and then run sudo apt-get dist-upgrade.

Is the software in this PPA stable? If so, why is not a default repository?

Can I trust this PPA?



share|improve this question
Software in PPAs is usually untested by anyone other then the PPA owner and users. ...and the PPA description tells you as much. – mikewhatever Apr 12 '12 at 18:18
if it makes you feel better, I've been using that PPA for a couple of months now and the only issue I've had is with my KMix dying sometimes, a restart solves this – Dirk Hartzer Waldeck Apr 13 '12 at 10:08
up vote 6 down vote accepted

Ubuntu Stable Release Updates

Stable release updates are automatically recommended to a very large number of users, and so it is critically important to treat them with great caution. Therefore, when updates are proposed, they must be accompanied by a strong rationale and present a low risk of regressions.

Kubuntu Backports

PPA description

Backports of new versions of KDE and major KDE apps for Kubuntu which are either too large a change or not yet tested enough to go to Ubuntu Backports.

I think that the new version of the KDE is in the "too large category". The new backported KDE version is also build against the new version of the Qt.


Can I trust this PPA?

The packages are backported by the same Kubuntu developers who are building the Kubuntu 12.04 packages.

But there is always the risk ( ):

When using Backports, it is important to understand that there is an inherent risk in backporting software. Although backported packages are tested by the community before they are included in the repository, there are very occasionally bad interactions with the older software on your system that are overlooked...

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.