You can set it from GNOME Tweaks, but not from GNOME Control Center... Related bug report: https://bugzilla.gnome.org/show_bug.cgi?id=771009
** Bug watch added: GNOME Bug Tracker #771009 https://bugzilla.gnome.org/show_bug.cgi?id=771009 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1713544 Title: Unable to set Alt+Shift or Ctrl+Shift as keyboard layout switcher on 17.10 (with gnome-control-center keyboard) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1713544/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs