Linux Mint external display resolution Adjustment

Linux Mint external display resolution adjustment external VGA Interface LCD display resolution is 1600x900, but in Linux Mint but not normal identification.
Google has fixed the problem. Ctrl + Alt + T call terminal, input 1xrandroid output 1VGA1 connected 1600x900 + 1366 + 0 (normal left inverted right x axis y axis) 0mm x 0mm2 1024x768 60.0 3 800x600 60.3 4 ...... the optimal resolution of the external display VGA1 is 1600x900. Then input 1cvt 1600 900 1600 at the terminal to output 1 #900x59.95 55.99Hz (CVT 1.44M9) hsync: kHz; pclk: 118.25 MHz2Modeline "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908-hsync + vsync followed by 1 "1600x900_60.00" 934 118.25 1600 1696 2112 900 903 908-hsync + vsync input 1 xrandroid -- newmode "1600x900_60.00" 934 118.25 1600 1696 1856 2112 900-hsync + vsync last input 1 xrandroid -- addmode VGA1" 1600x900_60.00 "2 xrandroid -- output VGA1 -- mode 1600x900_60.00. The desired resolution is displayed, but each time you log out or restart the computer, you have to restart it, therefore, a simple script is created. 1 xrandroid -- newmode "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903-hsync + vsync2xrandroid -- addmode VGA1 "1600x900_60.00" 3 xrandroid -- output VGA1 -- the mode scheme is saved. sh file, chmod + x to add the executable permission (or right-click the property to set the executable permission), and run it once every time (this does not require the root permission)