I use Ubuntu + Gnome and re-map the Caps Lock key to control using the Tweak tool (see screenshot).
To my frequent frustration, RStudio treats these two control keys differently. The CapsLock key mostly works for Control, except that it unselects whatever is currently selected in the Console. So every time I want to press Ctrl-C to copy something from the Console, I have to remember to use the real control key, not the Caps Lock key.