xrandr doesn't do what I expect. Instead I get BadMatch

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http://www.linuxquestions.org – I'm just getting the hang of xrandr, so it's likely that I've missed something, but I have no idea what it is. Here's my setup: Two monitors, one Thinkpad x41 laptop running at 1024x768, and another monitor running 1440x900 to the right of the laptop. Based on everything I've found online, one of the following should do let me spread a single desktop across the two monitors: Code: xrandr --output VGA1 --mode 1440x900 --pos 1024x0 --right-of LVDS1 xrandr --output VGA1 --mode 1440x900              --right-of LVDS1 (HowTos)