In my freshly installed Debian 7 system, every time I type on the keys
2, I get ² (ASCII character for "squared"). The same is true with 2 replaced by 3 to 8.
How could I desactivate this to get
^2 instead, as in Mac OSX ?
Perhaps a compose key setting? Are you using Gnome, by chance?
Try checking the files listed here;
/usr/share/X11/locale/en_US.UTF-8/Compose (the latter may change based on the first; see the link for more details)
You can try to use
xmodmap for this, some useful info is at the ArchWiki xmodmap page. Basically, this is a utility to manage your keyboard mapping in X. For your specific question, you could do something like
xmodmap -pke >mycustommodmap
to get the current settings first. On my system, the 'bad' keypress caused something called
dead_circumflex, which could be found in that file. After changing this to
asciicircum, and loading the new map with
the key now immediately produces a
To make sure that this is automatically done when you login, you could set the name of the file to
.Xmodmap in your home directory. If it doesn't get loaded automatically then or you don't want to name your file that way, you should be able to instruct your desktop to run the specified command at startup somehow.
Actually, although getting the current map first is a good place to start, you don't need all those lines in your
.Xmodmap, just the ones you'd like to change. For example, in my
.Xmodmap, to change the behavior for
^ (circumflex) and
~ (tilde), the contents are just
keycode 34 = asciicircum dead_diaeresis dead_circumflex dead_diaeresis bracketleft dead_abovering bracketleft keycode 61 = equal plus equal plus asciitilde dead_abovedot dead_tilde
Try tricking the computer. I have had this issue many times before and it can be tricked by typing '^' pressing space, then adding another space right after ^, then a 2, then erase the space between them and clicking after '^2' it's worked for me before on occasion but is concurrence. Give it a shot.
I guess it GTK input issue, try different input method with some GTK app:
$ GTK_IM_MODILE=xim gedit
If it will help just export
GTK_IM_MODILE variable by adding
export GTK_IM_MODILE=xim to your
~/.profile or by other method you prefer.