Ok. I have a thinkpad laptop and my bottom left key is a function key instead of a control key like I'm used to.
So I fired up xev, pressed the fn and got a keycode of 151. So I cleared all of it's current settings and ran the command keymap -e "keycode 151 = Control_L" it runs successfully. So then I save this to my file ~/.Xmodmap. Then I log in and out of my account.
Yet when I open firefox if I attempt to use "fn" + t to create a new tab the "fn" key is not recognized as control and nothing happens. What am I doing wrong?