https://bbs.archlinux.org – Try this, it works very well for me.import XMonad.Hooks.ManageHelpers (composeOne, isFullscreen, isDialog, doFullFloat, doCenterFloat) myManageHook = composeAll. concat $ [ [ className =? c --> doCenterFloat| c <- floats] , [ resource =? r --> doIgnore | r <- ignore] , [ resource =? (HowTos)