I created a custom shortcut in Keyboard->Shortcuts and set it opens qalculator app.

Then I assigned to it the keyboard Calculator key. Ubuntu asked me if I want to replace the original app and I confirmed it.

But now, nothing happens when I press the keyboard calculator key! I even changed the command from qalculator to /usr/bin/qalculate or /usr/share/qalculate, but the app does not open at all.


This seems to be a bug in unity-settings-daemon. I have filed it with them: https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1399132

As a workaround you can edit the settings manually with dconf Editor. To install it run sudo apt-get install dconf-tools.

You can find your custom shortcut under org.gnome.settings-daemon.plugins.media-keys.custom-keybindings and change the binding value to XF86Calculator

Refer to https://wiki.ubuntu.com/Keybindings

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