Ubuntu tour-adjusting the resolution of the extended Screen

Ubuntu tour-adjusting the resolution of the extended Screen

Open terminal Input

xrandr

 

Obtain the following information:

Screen 0: minimum 320 x 200, current 2390 x 768, maximum 8192 x 8192LVDS connected primary 1366x768+1024+0 (normal left inverted right x axis y axis) 309mm x 174mm   1366x768       60.0*+   1280x720       59.9     1152x768       59.8     1024x768       59.9     800x600        59.9     848x480        59.7     720x480        59.7     640x480        59.4  HDMI-0 disconnected (normal left inverted right x axis y axis)VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm   1024x768       60.0*    800x600        60.3     56.2     848x480        60.0     640x480        59.9  

 

Here LVDS is my laptop screen, external display is VGA-0

The resolution of my external monitor is 1440x900, and the maximum list is 1024x768, so I need to increase the resolution I need:

cvt 1440 900

The output is as follows:

# 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHzModeline "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync

Here, the content after Modeline is the content to be added, and then add:

sudo xrandr --addmode VGA-0 "1440x900_60.00"

Last changed display

sudo xrandr --output VGA-0 --mode "1440x900_60.00"

Complete.

 

You may not be able to use the preset resolution each time you start the system. Use the following command:

sudo gedit ~/.profile

In ~ /. Add the command to modify the resolution at the end of profile:

cvt 1440 900xrandr --newmode "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsyncxrandr --addmode VGA-0 "1440x900_60.00"