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Am 18.02.2015 um 14:35 schrieb Jon TURNEY:
Your description is quite inprecise; which terminal do you use (xterm?) and what exactly do you expect and see in those cases?On 18/02/2015 02:54, rhofmann@rayed.de wrote:Dell Latitude E6540, german keyboard. I can type AltGr-{ ... and so on, but ctrl-alt-{ ... as labeled on the keyboard gives something wrong. It seems like when Alt is pressed Ctrl (Strg) is ignored, it gives the same keys as without Ctrl. I tried some things with setxkbmap, but no success.
Again, not sure exactly what effect you suggest but in fact Ctrl+Left-Alt and AltGr can be distinguished and it works in both xterm and mintty. (It's a bit tricky and I don't recall the details right now, it involves considering the sequence of events.)Unfortunately, there doesn't currently seem to be a way to configure X to act in this way.In xkeyboard-config language, you are trying to access the "3rd level shift" for a key (1st level is the normal key, 2nd is the shifted key)I believe that the standard (DIN 2137) specifies that this 3rd level is accessed by right alt.ctrl + left alt being equivalent to right alt is a Windows-ism [1].
------ Thomas
See the upstream bug [2], you might also find the discussion in [3] of interest.[1] http://en.wikipedia.org/wiki/AltGr_key#Control_.2B_Alt_as_a_substitute[2] https://bugs.freedesktop.org/show_bug.cgi?id=37232[3] https://bugs.launchpad.net/ubuntu/+source/xkeyboard-config/+bug/822872
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