The latest PPA version fixed the problem for me. I can now use Alt-Space and Alt-Shift-Space to switch to next and previous keyboards.
1:3.6.3-0ubuntu45ppa1 amd64 3.8.5-0ubuntu10ppa1 amd64 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1218322 Title: Can't set keyboard layout change to alt+shift, ctrl+shift, etc. To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1218322/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
