Hi, I had the same issue, and I figured out how to do change the handler (Ubuntu 12.10).
Edit /usr/share/dbus-1/services/org.freedesktop.Telepathy.Client.KTp.TextUi.service to comment out (or remove) the link to ktp-text-ui and use Empathy instead. In the end, the service file will look like this: [D-BUS Service] Name=org.freedesktop.Telepathy.Client.KTp.TextUi # Exec=/usr/lib/kde4/libexec/ktp-text-ui Exec=/usr/lib/empathy/empathy-chat After this, I figured I had to restart dbus, but doing a "sudo service dbus restart" is evidently a bad idea, since it locks up everything. So I suppose you have to log out and log back in (or reboot, which is what I ended up having to do). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to empathy in Ubuntu. https://bugs.launchpad.net/bugs/951104 Title: kde-telepathy-text-ui hijacks Empathy in Unity Status in “empathy” package in Ubuntu: Confirmed Status in “ktp-text-ui” package in Ubuntu: Confirmed Bug description: When kubuntu-desktop is installed the KDE Telepathy Programm hijacks the Unity integrated Empathy whithout asking the user so if unity is started Empathy doesnt react anymore like it should. When you open Empathy messages through the indicator of through the launcher icon it either doesnt open any window or it opens the kde- telepathy-text-ui version which doesnt seem to be localized when opened. When i uninstall kde-telepathy-text-ui and relog or restart empathy the issue is resolved but it is very annoying if you want to test multiple Desktops and don't know why your old desktop starts behaving crazy. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: kde-telepathy-text-ui 0.3.0-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-18.28-generic-pae 3.2.9 Uname: Linux 3.2.0-18-generic-pae i686 NonfreeKernelModules: nvidia ApportVersion: 1.94.1-0ubuntu1 Architecture: i386 Date: Fri Mar 9 21:07:35 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120225) SourcePackage: ktp-text-ui UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/empathy/+bug/951104/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp