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There is a conflict between the Ubuntu keyboard shortcut Ctrl-Alt-S (which does "toggle shaded state") and the emacs macro Ctrl-Alt-S, which invokes forward-search-regex, which of course is vastly more useful than "toggle shaded state."

In Keyboard Settings, I deleted the shortcut for "toggle shaded state," and that makes the emacs macro work properly. But sometimes the Ubuntu shortcut reasserts itself unexpectedly, so I have to go to System Settings to delete that shortcut again. It doesn't always happen on restart. Today it happened while I was working in emacs - one minute Ctrl-Alt-S invoked the regular expression search, the next minute it went crazy.

How can I delete the Ubuntu keyboard shortcut permanently?

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  • What version of Ubuntu are you using?
    – Elder Geek
    May 21, 2014 at 23:27
  • @ElderGeek, I'm using 14.04.
    – MTS
    May 21, 2014 at 23:38
  • I should add that this happens on multiple machines.
    – MTS
    May 21, 2014 at 23:38

1 Answer 1

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In 14.04 System Settings -> Keyboard -> Shortcuts -> Windows

Highlight Toggle Shaded State.

Backspace should disable it.

It's my understanding that many of these are hard-coded and the fact that disabling doesn't stick is a bug. More information about it and the option to subscribe to notifications regarding it are available here

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  • That's exactly what I did. Every time I do that, the macro resets itself after some period of time, so if I look at that macro in System Settings -> Keyboard -> Windows, it is no longer disabled. I am trying to figure out how to disable it permanently, since it doesn't seem to work if I do it in System Settings.
    – MTS
    May 21, 2014 at 23:37
  • I can confirm this bug and am researching further
    – Elder Geek
    May 22, 2014 at 15:38
  • More information about the and the option to subscribe to notifications regarding it are available here: bugs.launchpad.net/ubuntu/+source/compiz/+bug/1063617
    – Elder Geek
    May 22, 2014 at 18:15

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