Hi all. I'm new in the mail list, and sorry for my english ... I tried to set up my wm for dual monitor with these keyboard settings: -- mod-[1..9], Switch to workspace N -- mod-shift-[1..9], Move client to workspace N -- [((m .|. mod4Mask, 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 .|. mod4Mask, key), screenWorkspace sc >>= flip whenJust (windows . f)) | (key, sc) <- zip [xK_w, xK_e] [0..] , (f, m) <- [(W.view, 0), (W.shift, shiftMask)]] I exprerienced that when I switch workspace the opened windows moved the new workspace from the inactive screen. If the inactive screen is empty in the workspace where I have just moved then a window will fill it. I hope it is understandable for you. Any idea ? What is wrong ? What causes it ? Regards, Lajos