I am trying to use xmonad on a laptop connected to two monitors, via VGA and HDMI outputs. Laptop screen is disabled and both external monitors configured using xrandr: xrandr --output LVDS1 --off xrandr --output HDMI-0 --right-of VGA1 xrandr --output VGA1 --right-of LVDS1 But mod+{w,e,r} does not work and the only way to have windows on one of my screens is to move floating window. Xinerama shows only right monitor: ghc -e "Graphics.X11.openDisplay [] >>= Graphics.X11.Xinerama.getScreenInfo" [Rectangle {rect_x = 1920, rect_y = 0, rect_width = 1920, rect_height = 1200}] Is it possible to somehow overwrite getScreenInfo for xmonad or configure Xinerama propertly? nvidia-setting can only see one screen and one display. xrandr output shows one huge 3840 x 1200 display and all screens: Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384 LVDS-0 disconnected primary (normal left inverted right x axis y axis) DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) HDMI-0 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm 1920x1200 60.0*+ 1920x1080 60.0 1680x1050 60.0 1600x1200 60.0 1280x1024 60.0 1280x960 60.0 1024x768 60.0 800x600 60.3 640x480 59.9 DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) LVDS1 connected 1600x900 60.0 + 40.0 1440x900 59.9 1360x768 59.8 60.0 1152x864 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 connected 1920x1200+0+0 518mm x 324mm 1920x1200 60.0*+ 1920x1080 60.0 1680x1050 60.0 1600x900 60.0 1280x1024 60.0 1440x900 59.9 1280x800 59.8 1280x720 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 60.0 VIRTUAL1 disconnected 1024x768 (0x2ce) 65.0MHz h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz v: height 768 start 771 end 777 total 806 clock 60.0Hz 800x600 (0x2cf) 40.0MHz h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz v: height 600 start 601 end 605 total 628 clock 60.3Hz 640x480 (0x2d0) 25.2MHz h: width 640 start 656 end 752 total 800 skew 0 clock 31.5KHz v: height 480 start 490 end 492 total 525 clock 59.9Hz 1920x1200 (0x2c8) 154.0MHz h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 74.0KHz v: height 1200 start 1203 end 1209 total 1235 clock 60.0Hz 1680x1050 (0x2ca) 146.2MHz h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.3KHz v: height 1050 start 1053 end 1059 total 1089 clock 60.0Hz 1280x1024 (0x2cc) 108.0MHz h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 64.0KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.0Hz Cheers, Yuriy