Ubuntu – Display resolution in duplicate monitor

display

I use duplicate one monitor laptop LCD and other monitor that monitor resolution is bigger than laptop LCD. How can I set laptop LCD resolution for them?

When I use the mirror button it sets 1024 * 768 but my laptop LCD resolution is 1366 * 768 — how can I set this resolution for them? When I set this resolution I get an error. My laptop is an HP dv6 6080 and VGA is Intel sandy bridge if I change to AMD VGA can I resolve this problem?

This is the xrandr output -q output. How can I put laptop resolution for two lcd that full monitors screen? 

    xrandr -q
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   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)
   1920x1080      60.0 +
   1600x1200      60.0  
   1680x1050      60.0  
   1280x1024      60.0  
   1440x900       59.9  
   1280x960       60.0  
   1280x800       59.8  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        60.0  
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)

Best Answer

If your monitor does not support the wide screen resolution of 1366x768 you will not be able to set that resolution. You can likely set your laptop to use the 1024x768 though.

If it is a wide screen monitor then you should be able to set that resolution in:

system settings > displays

If you do not have that resolution then the system is not identifying the external monitor properly.

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