up vote 26 down vote

The best way to do that is probably to install Gnome Tweak Tool:

sudo apt-get install gnome-tweak-tool

  • Open tweak-tool and click on the typing section in the left column.
  • You should now see the line Caps Lock key behavior on the left.
  • Choose Make Caps Lock an additionnal Ctrl key instead of Disabled in the drop down list and you should be good.

Besides the the setting panel does not take a lot of time to come up on my machine, so I have no idea what the problem is.

Enjoy your new Ctrl key!

ere's a way to do it without installing extra software:

setxkbmap -layout us -option ctrl:nocaps


To permanently change the behaviour:

  1. run dconf-editor

  2. select org.gnome.desktop.input-sources

  3. Change xkb-options to ['ctrl:nocaps'] (or add it to any existing options)

or on the command line (Warning -- this overwrites your existing settings!):

gsettings set org.gnome.desktop.input-sources xkb-options "['ctrl:nocaps']"