I have installed Elementary OS's Pantheon on Ubuntu 14.04 following the instructions in here installation guide.

After doing what the first answer says, I rebooted and found that there is no icon to choose a session on the login page. Upon logging onto Ubuntu, however, I notice that there exists the Elementary theme and a few other things so it's not like nothing was installed... But still I cannot access it.

I then followed the instructions on the second answer, but once again it was to no avail. No way to choose another session.

What can I do?

  • Which answer did you follow from that question? – muru May 14 '15 at 1:54
  • @muru As I wrote above, I followed the first two... I tried the most up-voted one and when I saw that it (seemingly) failed, I tried the second most up-voted. – Kristóf May 14 '15 at 7:36

Well, long story short answer: There is currently no way to install or run Pantheon on Ubuntu (or any other distro, for that matter) in a stable and sane way.

Let's talk about why: Although elementary OS (Freya) is based on Ubuntu (14.04), some core packages are patched or backported (= we imported a newer version of the package). You experienced this problem with the GTK+ library (a very popular toolkit for writing GUI applications).

We do not maintain versions of Pantheon for other distros than elementary OS, because there are simply no ressources (in terms of developers) left to do so. It's a very complicated thing to write applications for different distros (because of the different versions of libraries) - and let's not talk about a whole desktop environment depending on GNOME tools and libs.

Oh and you shouldn't add elementary PPAs (which are our repos currently) because this may/will overwrite libs and stuff. I fear you will only bork your system with doing so!


  • Yep, it did bork my system. Ended up doing a clean installation. Thanks! – Kristóf Jul 17 '15 at 14:54

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