So let's get started..
1) Open Terminal and type cvt 1150 850. Replace these numbers with your preferred resolution and then enter.
You will see something like this:
copy the info stated after Modeline
2)Open any text editor I prefer gedit, vim will also be very good.
declare the text file as script by adding #!/bin/bash at the beginning of the file and then add the 3 commands one after another
- xrandr --newmode 'paste the info here'
- xrandr --addmode VGA1(or your display type) 1152x810_60.0
- xrandr --output VGA1 --mode 1152x810_60.00
Ex.
now save the file by any name with an .sh extension.
3) make the file executable either by terminal by entering chmod a+rx scriptname.sh
or
gui by selecting the file Right Click>Properties>Permissions>Allow executing file as program.
(You can test the script from terminal by going to the destination where you saved the script and execute it by adding ./ before the script.)
4)Now move the script to your home folder
open up Startup Applications and add the script we created in it as described in the picture below
Press save log out and log back in for the changes to take effect.
Done.
If you have any question please do ask me and if you find any errors in this article do let me know. Thank you.
Here's the video:
Oh do add comments.



