Based on earlier suggestions, I worked around this by changing the keybinding to <Ctrl><Alt>space. The dialog to change this is not entirely intuitive; you have to click the [...] button next to the current binding.
For the record, Xubuntu 14.04 and ibus 1.5.5-1ubuntu3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1278569 Title: ibus breaks emacs and eclipse control-space keybinding To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1278569/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
