shortcut-keysunityunity-dashwindow-manager
I am comfortable using alt+ up and alt+ down after typing alt+ tab, so I don't need the shortcut alt+~ to do that. And this is my favourite shortcut for maybe my most heavily used emacs command.
How can I disable it (not knowing how this key is named is not helping me; in my Spanish keyboard has a symbol I don't even know how to translate 🙂 )?
You can use CompizConfig Settings Manager to change the key used to show the Unity HUD.
To open terminal hit Alt+Ctrl+T and run following command:
sudo apt-get install compizconfig-settings-manager
Or search for 'compizconfig-settings-manager' and install it from there.
Once installed, Hit Super key (Windows key) to open Unity dash and search for "ccsm" and open it.
In CompizConfig Settings Manager Navigate to Desktop > Ubuntu Unity Plugin
Under the Behavior tab click on little cross in front of "Key to show the HUD", This will set the key to default (Alt)
Please edit the file /etc/X11/xorg.conf:
gksu gedit /etc/X11/xorg.conf
There should be a section in this file called "ServerFlags". If it's not there, add it as below at the end of the file. If it is there, make sure that the line Option "DontZap" "yes" is in there with yes as a parameter:
Section "ServerFlags"
Option "DontZap" "yes"
EndSection
Best Answer
I answer my own question so it does not remain unanswered, but credit goes to Chirag64 for giving me the clue.
There is a bug that makes unity to activate that keybinding for that action when action is Disabled (as it is by default). Workaround is to Enable the action and to assign it another keybinding.
See here the whole set of details: https://bugs.launchpad.net/unity/+bug/874734