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

Ernte1893 · 02-08-2016, 04:07 PM

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?

Emerson · 02-08-2016, 06:10 PM

With KMS you can define output on kernel command line, this will disable DVI:

Code:

video=LVDS-1:d