Ubuntu
xkeyboard-config package

  1. Bug #213820
  2. Comment #3

Comment 3 for bug 213820

Revision history for this message
Diaa Sami (diaa.sami) wrote :

I used to have the same problem because a certain setting was enabled, it caused the Ctrl key to be consumed, make sure that the following option is off
System > Preferences > Keyboard > Layouts > Layout Options > Third level choosers > Press Right Ctrl to choose 3rd level