Hi, I just installed CentOS 7 on my NB and I'm experiencing problem during switching the workspace in GNOME3 environment. The workspace on my NB display is working correctly after change from one workspace to another. But the windows placed on the external/second display stay on the active workspace. I found the description and solution of this problem here: http://gregcor.com/2011/05/07/fix-dual-monitors-in-gnome-3-aka-my-workspaces-are-broken/ but I can't find the key "workspaces_only_on_primary" in my installation. Does anybody have a tip for solving this problem? Thanks martin