LinuxQuestions.org - How to turn off LVDS monitor and use ONLY external monitor instead? (xrandr doesnt work)

Hi guys,

I have an old laptop with an internal 12'' monitor and bought an external monitor therefore. However, I tried to turn off the internal screen with the GUI, but it turns a bit darker but is still on. same happens with the command (yes, I have the right names).

Code:

xrandr --output LVDS1 --off --output VGA1 --auto

xrandr on its own gives the following output:

Code:

Screen 0: minimum 320 x 200, current 2048 x 768, maximum 4096 x 4096

LVDS1 connected 1024x768+1024+0 (normal left inverted right x axis y axis) 246mm x 184mm

  1024x768      60.00*+

  800x600      60.32    56.25  

  640x480      59.94  

VGA1 connected primary 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm

  1024x768      60.00* 

  800x600      60.32    56.25  

  848x480      60.00  

  640x480      59.94  

DVI1 disconnected (normal left inverted right x axis y axis)

TV1 unknown connection (normal left inverted right x axis y axis)

  848x480      59.94 +

  640x480      59.94 +

  1024x768      59.94  

  800x600      59.94

Does anyone has any idea?