IBus >= 1.5.11 on Ubuntu

Solution 1:

Installed now these builds https://launchpad.net/~tista/+archive/ubuntu/wayland/+build/8264511

Download the following files in a folder

gir1.2-ibus-1.0_1.5.11+git20151104-2-0ubuntu1~xenial1_amd64.deb
ibus_1.5.11+git20151104-2-0ubuntu1~xenial1_amd64.deb
ibus-gtk_1.5.11+git20151104-2-0ubuntu1~xenial1_amd64.deb
ibus-gtk3_1.5.11+git20151104-2-0ubuntu1~xenial1_amd64.deb
libibus-1.0-5_1.5.11+git20151104-2-0ubuntu1~xenial1_amd64.deb

Install

sudo dpkg -i *.deb

Don't pay attention to the warnings and restart

Solution 2:

Based on some of the comments, I chose to install ibus 1.5.12. I'm using Ubuntu 14.04, and based on the reply from @Fabio, this worked for me here is the source location: https://launchpad.net/~tista/+archive/ubuntu/wayland/+build/8927526

gir1.2-ibus-1.0_1.5.12+git20160201-0ubuntu1-xenial1_amd64.deb
ibus_1.5.12+git20160201-0ubuntu1-xenial1_amd64.deb
ibus-gtk3_1.5.12+git20160201-0ubuntu1-xenial1_amd64.deb
ibus-gtk_1.5.12+git20160201-0ubuntu1-xenial1_amd64.deb
libibus-1.0-5_1.5.12+git20160201-0ubuntu1-xenial1_amd64.deb

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EDIT - errors with dpkg
Errors when de-packaging are probably related to unmet dependencies.
Download from Ubuntu-Packages the missing packages.
Manually de-package until dependencies are met.
Then try de-packaging the above packages again.