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List: gentoo-desktop
Subject: Re: [gentoo-desktop] Question regarding disappearing keystrokes...
From: "Mike C. Fletcher" <mcfletch () rogers ! com>
Date: 2004-09-26 4:02:16
Message-ID: 41563F48.5080908 () rogers ! com
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Okay, have been playing with this problem (ctrl+shift consumes
characters) for the last three hours or so (it's been driving me crazy),
and I now have a solution. Posting here in case others run into the
problem and need to know how to disable this little mis-feature.
Problem summary:
The microsoft(natural) keyboard mapping, by default, maps shift+ctrl
to "Multi_key", which is a "chording" composition mechanism that
allows for entering extended character codes via a set of defined
mappings. For instance type shift+ctrl, then 'co' produces a
copyright symbol. This particular choice of keys, however, means
that simple editing operations involving shift and control can wind
up entering the chording-key mode.
Problem source:
Turns out that this is an XWindows "feature" which was enabled by
the (AFAIK automatically generated) configuration options in my
xorg.conf keyboard section:
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbModel" "microsoftpro"
Option "XkbLayout" "us"
Option "XkbVariant" "winkeys"
EndSection
winkeys doesn't actually appear to be defined anywhere, which leaves
the definition as the "normal" microsoftpro layout (leaving out
winkeys, or defining any other unrecognised variant has the same
effect, effectively selecting "basic").
Solution 1:
Switch the XkbVariant setting to "nodeadkeys". This eliminates all
of the undesirable features of the mapping, but also eliminates a
number of the commonly useful key-mappings such as the Windows keys,
the "Menu" key, etceteras.
Solution 2:
Leave XkbVariant setting as "basic" (or "winkeys" if you prefer).
Create a file like this in your home directory:
8<_____ .xmodmap.rc ___________
keycode 115 = Super_L Multi_key
keycode 116 = Super_R Multi_key
keycode 109 = Control_R
and add the following line to your .xinitrc file (you may not have a
.xinitrc file yet, if not, read up on what to put in it, at the very
least you'll want a call to startkde in it, read this *before*
editing the file, as a messed up .xinitrc can prevent you from
logging in (annoying if you're using xdm for your login manager)):
xmodmap .xmodmaprc
This file maps the "compose key" (multi-key) mode to
shift+WindowsKey (either one), and eliminates the control-with-shift
as a multi-key mapping.
If someone has a better approach, that would be cool to know about too.
Adding the xmodmap call to .xinitrc means that the whole system operates
as-desired wrt this feature, but if I'm reading correctly xmodmap is not
the "proper" way to do this kind of thing any more.
Enjoy yourselves,
Mike
Mike C. Fletcher wrote:
> This is probably going to seem trivial, but it is driving me a little
> buggy. I'm a programmer, so I spend almost my whole day editing code,
> including a large amount of cutting, copying and pasting. So I do a
> lot of key-sequences where I'm holding down shift(+ctrl)+arrows to
> select, then depressing control to start a ctrl+c or a ctrl+x sequence.
>
... <snip>
________________________________________________
Mike C. Fletcher
Designer, VR Plumber, Coder
http://www.vrplumber.com
http://blog.vrplumber.com
--
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