How do I resolve "xrandr: cannot find crtc for output"?

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http://unix.stackexchange.com – Whenever I come to work I type xrandr --auto xrandr --output VGA1 --right-of LVDS1 This gets my second display working, however now I get xrandr: cannot find crtc for output VGA1 For reference here is the output of xrandr, Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 8192 x 8192 LVDS1 connected 1366x768+1920+0 (normal left inverted right x axis y axis) 277mm x 156mm 1366x768 60.0*+ 1360x768 59.8 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 connected (normal left inverted right x axis y axis) 1680x10 (HowTos)