ctrl-alt-2 as at (@)

Ingo Krabbe ikrabbe.ask at gmail.com
Sat Jun 6 06:21:07 PDT 2015

Hey Knut,

it's not that strange, that you cannot configure your keyboard as you where used to twenty years ago,
as the input layers developed to focus more input devices and more important, more languages and
character systems.

Quite likely your X11 Server is configured to use the kernel evdev driver to get keyboard input from keyboards. I'm not sure if you are able to configure the evdev input with xmodmap at all, but the preferred way is to configure keyboard input through the hal driver options. See man -k evdev and


. Check /etc/X11/xorg.conf.d or similar for keyboard configurations.

Best Regards,


> Hi,
> I have a USB keyboard with a special "@" button that sends ctrl-alt-2 when
> pressed.
> I have been unable to configure xorg to use this button as an @, and I
> can't find anyone who know how to do this.
> My workaround is to make a keyboard shortcut in the window-manager to run
> "xvkbd -xsendevent -text @" when ctrl-alt-2 is pressed.
> I have not tested it in a production environment, but it works on my
> computer.
> I would also like to learn how to do this the proper way to do it. It is
> embarrassing that I have run linux for over 20 years, and still can not
> configure a keyboard. People makes fun of me :(
> I tried to do it with: xmodmap -e  "add mod3 = Alt_L Control_L"; but that
> does not make mod3 in to a combination of Alt_L and Control_L as far as I
> understand. It only maps Alt_L to mod3 and Control_L to mod3. I was able to
> do this in the console by creating a file with dumpkeys and adding "control
> alt keycode   3 = at" then loading it with loadkeys.
> I was hoping it would be possible to do something similar with xorg.
> This is the keyboard:
> http://www.tastaturen.com/ergebnis.lasso?-session=shop:42F941961dfbe2AB4DjsnH32421E&kn=2504&vo=p&lng2=e
> Best regards
> -- 
> Knut Olav Bøhmer

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