That setting is already set to "<Alt>". Alt does engage the 'mouse modifier' - for example, if you press it, you can no longer drag the window by clicking on its title bar. You can't drag the window at all.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/859288 Title: full-screen onboard keyboard commandeers entire desktop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/onboard/+bug/859288/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs