I mapped Ctrl–Alt–Up/Down to open web-browser and email client but it didn't take effect. Ctrl–Alt–Up/Down still switch workspaces as the default setting of GNOME 3.8.
I have tried log-out/log-in. No good.
Ubuntu – How to disable the shortcut Ctrl-Alt-Arrow in GNOME 3.8
gnomegnome-shellkey-bindingshortcut-keysworkspace-switcher
Related Solutions
Install compizconfig-settings-manager
sudo apt-get install compizconfig-settings-managerLaunch Compiz Config from System -> Preferences -> CompizConfig Settings Manager.
Navigate to Desktop Wall -> Viewport Switching and check the Allow Wrap-Around checkbutton:
On current Ubuntu metacity is no longer the default window manager, so the accepted solution no longer works. Instead there's a different setting that you can change. Set the key combination to an empty array.
In a terminal:
gsettings set org.gnome.settings-daemon.plugins.media-keys terminal '[]'
To undo the change again
gsettings reset org.gnome.settings-daemon.plugins.media-keys terminal
In case this changes again, I found this by looking for all settings that mention "terminal"
gsettings list-recursively | grep terminal
I had this problem because it interferes with an Emacs keybinding to transpose sexps.
Best Answer
The new keybinding you define in 'Settings-->Keyboard-->Shortcuts-->Navigation' will get appended to the previous/default one.
It will become, for example.
I managed to remove the default keybinding using the following commands
This clears all defined shortcuts for those tasks. And then just use 'Settings-->Keyboard-->Shortcuts-->Navigation' to define the desired shortcuts.
Source : https://bugzilla.redhat.com/show_bug.cgi?id=982695