Comment 0 for bug 1201679

1. Add the ubuntu-desktop PPA.
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install indicator-keyboard
2. Log out and log back in.
2. Open System Settings>Region & Language
3. Switch to the Text Entry tab.
4. Click the + button to add at least two more keyboard layouts.
5. Log out and log back in.
6. Try to use the (new) default Super+Space keyboard shortcut to switch between keyboard layouts.

What happens
-------------------
Usually, Super+Space is ignored. It worked for me once on login but every other time I tested it didn't work.
It works fine in GNOME Shell but not in Unity.

Manually changing the keyboard shortcut either through Region & Language>Text Entry or via
gsettings set org.gnome.settings-daemon.plugins.media-keys switch-input-source '<Super>space'
also seems to be enough to nudge Unity into respecting the Super+Space keyboard shortcut.

My guess is that Unity is too aggressive in binding the Super key to itself.

Workaround
-----------------
Shift+Super+Space, the keyboard shortcut to switch backward between keyboard layouts works.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity 7.0.2+13.10.20130705.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.10.0-2.9-generic 3.10.0
Uname: Linux 3.10.0-2-generic x86_64
ApportVersion: 2.10.2-0ubuntu4
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Tue Jul 16 00:28:27 2013
InstallationDate: Installed on 2013-06-14 (31 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha amd64 (20130613)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)