[My SOLUTION] in my lubuntu 14.04 same problem. Googling I found 100%cpu utilisation is due to the two processes: ibus-daemon and ibus-x11
1st SOLUTION: start menu > Preferences > Language Support > Keyboard Input Method System: none 2n alternate SOLUTION: sudo apt-get remove ibus NOTE: IBUS is an "alternative" to setxkbmap IBUS has many problem with some keyboard under lubuntu 14.04 see also (ibus daemon cpu use flares up briefly when editing in Gedit) at https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1299759 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/367372 Title: Gedit uses 100% of the CPU while editing files To manage notifications about this bug go to: https://bugs.launchpad.net/gedit/+bug/367372/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs