I have 4 monitors in a 2x2 configuration. I would like to replace the w-e-r key bindings with w-e-s-d key bindings to match my 2x2 configuration, but it does not work. Specifically, the w & e keys work, but the s & d keys do not work. My code to set these key bindings is a modification of the standard xmonad.hs template from xmonad 0.8. (My modifications are at the end.) I would like the following mapping: s -> screen 1 d -> screen 2 w -> screen 3 e -> screen 4 Here is the section from my xmonad.hs file. My attempt at binding the keys is at the end. myKeys conf@(XConfig {XMonad.modMask = modMask}) = M.fromList $    -- launch a terminal    [ ((modMask .|. shiftMask, xK_Return), spawn $ XMonad.terminal conf)    -- launch dmenu    , ((modMask,               xK_p     ), spawn "exe=`dmenu_path | dmenu` && eval \"exec $exe\"")    -- launch gmrun    , ((modMask .|. shiftMask, xK_p     ), spawn "gmrun")    -- close focused window    , ((modMask .|. shiftMask, xK_c     ), kill)     -- Rotate through the available layout algorithms    , ((modMask,               xK_space ), sendMessage NextLayout)    -- --  Reset the layouts on the current workspace to default    -- , ((modMask .|. shiftMask, xK_space ), setLayout $ XMonad.layoutHook conf)   , ((modMask .|. shiftMask,                 xK_space)     , layoutScreens 4 Grid)   , ((modMask .|. controlMask .|. shiftMask, xK_space), rescreen)    -- Resize viewed windows to the correct size    , ((modMask,               xK_n     ), refresh)    -- Move focus to the next window    , ((modMask,               xK_Tab   ), windows W.focusDown)    -- Move focus to the next window    , ((modMask,               xK_j     ), windows W.focusDown)    -- Move focus to the previous window    , ((modMask,               xK_k     ), windows W.focusUp  )    -- Move focus to the master window    , ((modMask,               xK_m     ), windows W.focusMaster  )    -- Swap the focused window and the master window    , ((modMask,               xK_Return), windows W.swapMaster)    -- Swap the focused window with the next window    , ((modMask .|. shiftMask, xK_j     ), windows W.swapDown  )    -- Swap the focused window with the previous window    , ((modMask .|. shiftMask, xK_k     ), windows W.swapUp    )    -- Shrink the master area    , ((modMask,               xK_h     ), sendMessage Shrink)    -- Expand the master area    , ((modMask,               xK_l     ), sendMessage Expand)    -- Push window back into tiling    , ((modMask,               xK_t     ), withFocused $ windows . W.sink)    -- Increment the number of windows in the master area    , ((modMask              , xK_comma ), sendMessage (IncMasterN 1))    -- Deincrement the number of windows in the master area    , ((modMask              , xK_period), sendMessage (IncMasterN (-1)))    -- toggle the status bar gap    -- TODO, update this binding with avoidStruts , ((modMask    , xK_b     ),    -- Quit xmonad    , ((modMask .|. shiftMask, xK_q ), io (exitWith ExitSuccess))    -- Restart xmonad    , ((modMask ,  xK_q     ), restart "xmonad" True)    ]    ++    --    -- mod-[1..9], Switch to workspace N    -- mod-shift-[1..9], Move client to workspace N    --    [((m .|. modMask, k), windows $ f i)        | (i, k) <- zip (XMonad.workspaces conf) [xK_1 .. xK_9]        , (f, m) <- [(W.greedyView, 0), (W.shift, shiftMask)]]    ++    --    -- mod-{w,e,r}, Switch to physical/Xinerama screens 1, 2, or 3    -- mod-shift-{w,e,r}, Move client to screen 1, 2, or 3    --    [((m .|. modMask, key), screenWorkspace sc >>= flip whenJust (windows . f))        | (key, sc) <- zip [xK_s, xK_d, xK_w, xK_e] [0..]        , (f, m) <- [(W.view, 0), (W.shift, shiftMask)]] Note: I actually have two Xinerama screens stacked vertically, but I use XMonad.Layout.LayoutScreens (combined with Grid) to create 4 screens in a 2x2 configuration. I don't think the LayoutScreens is causing the problem b/c if I revert to using the w,e,r bindings, I am able to to access 3 of the 4 screens as expected.