Control blocks Alt in keybindings

[Daniel Stone]

On Mon, Dec 03, 2007 at 10:35:54AM +0100, Tassilo Horn wrote:
> I use Xorg 7.3 on a Gentoo GNU/Linux machine.  When I want to enter
> keybindings involving both Control (C) and Alt (M) it seems that Control
> is blocking the Alt key if I press it first.
> 
> Let's say I want to type the binding C-M-a by first pressing Control,
> then Alt and then "a", it's translated to only C-a.  With xev I get the
> following order:
> 
>   KP-C, KP-a, KR-a, KP-M, KR-M, KR-C
> 
> where KP is KeyPress and KR is KeyRelease.
> 
> I can type C-M-a by first pressing Alt, then Control and then "a".
> 
> I tried this with both stumpwm and twm, so it shouldn't be the window
> manager stealing the keys.
> 
> I use a German Dvorak layout, but tested with
> 
>   setxkblayout "us"
> 
> too and got the same results.
> 
> Is this a bug or what can be the culprit?

http://bugs.freedesktop.org/show_bug.cgi?id=865 will come into play if
you have certain XKB options such as grp:ctrl_shift_toggle.

Cheers,
Daniel
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