Ubuntu – Super + Space shows numbers on icons on Unity launcher instead of switching between languages

I just had this same problem and was hoping to find an answer in this thread, but didn't. My current solution: physically tape little pieces of paper with numbers on them on the monitor bezel next to the launcher buttons. I assume you were looking for an electronic solution, but what's the difference?

As an added benefit, if you have any passwords you need to write down, now you've got sticky notes on your monitor to use! ;)

Seriously though, get some paper and tape and you're all set.

Starting from Ubuntu 13.10, Unity/Gnome moved the keyboard layout changing control from X server to higher level tool: unity-settings-daemon/gnome-settings-daemon plugin to add support for multiple X input methods. So the layout change function in X is just disabled.

Same for Caps key, X interprets it as capital lock. When you assign it to layout changing in Unity settings. It will do both as X is not aware of that. So you have to disable caps function in X.

• The workaround explained in bug report mentioned by Alex.O seem to do that. Which is the same as running:

  gsettings set org.gnome.desktop.input-sources xkb-options "['caps:none']"
  

  caps:none means Caps Lock is disabled, to see all Caps key X supported functions, try:

  more /usr/share/X11/xkb/rules/xorg.lst | grep caps
  

• To get default function back:

  gsettings reset org.gnome.desktop.input-sources xkb-options