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unbinding specific key-binding (Ctrl-SPACE)

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Martin Steffen

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Dec 9, 2012, 5:40:25 AM12/9/12
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Hi, since I switched to the fedora 18 beta, KDE has a keybinding which
I prefer to switch off. I guess I found in the menues how to change
keybingings, unfortunately it has no effect. In particular, the
keybinding I am talking about is
Ctrl+Space

on my machine that's bound to toggling between to different keyboard
layouts (and I don't want that). Now,
the strange thing is as follows. When looking at the following
submenue (which I except to be responsible for that binding)

System Settings
-> Config. of keybindings
-> Global Keyboard shortcuts
-> KDE component = KDE Keyboard Layout
-> Switch to next keyboard layout

then I see that "switch to next keyboard layout" is actually bound to

CTRL+ALT+K

and that's true: _also_ that combination allows me to toggle the
keyboard. I can also change the keybinding or "unbind" the CTRL+ALT+K
combination (set the menu-entry "Switch to next keyboard layout" to
"NONE").
That unbinds the CTRL+ALT+K. Unfortunatley, the CTRL+SPACE (which is
the one which I don't want because I need it for something else) is
still mapped to that keyboard switching. So I don't know how I can
unbind it.

Perhaps an explanation is that "CTRL-SPACE" is actually bound to some
functionality which "behaves" like "switch-to-next-keyboard-
layout" (but it's named differently) but I don't find in the menues
how to unset it.

Thanks, Martin

J.O. Aho

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Dec 11, 2012, 12:05:14 PM12/11/12
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Martin Steffen wrote:
> Hi, since I switched to the fedora 18 beta, KDE has a keybinding which
> I prefer to switch off. I guess I found in the menues how to change
> keybingings, unfortunately it has no effect. In particular, the
> keybinding I am talking about is
> Ctrl+Space
>
> on my machine that's bound to toggling between to different keyboard
> layouts (and I don't want that). Now,
> the strange thing is as follows. When looking at the following
> submenue (which I except to be responsible for that binding)
>
> and that's true: _also_ that combination allows me to toggle the
> keyboard. I can also change the keybinding or "unbind" the CTRL+ALT+K
> combination (set the menu-entry "Switch to next keyboard layout" to
> "NONE").
> That unbinds the CTRL+ALT+K. Unfortunatley, the CTRL+SPACE (which is
> the one which I don't want because I need it for something else) is
> still mapped to that keyboard switching. So I don't know how I can
> unbind it.
>
> Perhaps an explanation is that "CTRL-SPACE" is actually bound to some
> functionality which "behaves" like "switch-to-next-keyboard-
> layout" (but it's named differently) but I don't find in the menues
> how to unset it.

Most likely you have an input method enabled for example IBus, which uses
ctrl-space as combination to switch between different input methods.
IBus ain't a KDE application and has it's own keybidings, so you need to
configure it to use another key combination.

--

//Aho

Martin Steffen

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Dec 12, 2012, 12:12:21 PM12/12/12
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That's right, thanks. doing "ibus exit" frees the key for my use
again.
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